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RESEARCH REPORT NO. 2
STANFORD UNIVERSITY JASPER RIDGE BIOLOGICAL EXPERIMENTAL AREA
p'e pEl rtme nt.of Bio10eical ScLences
THE VASCULAR PLANTS OF THEJASPER RIDGE BIOLCGICAL EXPERIMENTAL AREA
OF STANFORD UNIVERSITY
Duncan M. Porter
INTRODUCTION
Anril 1. 1962
(Revised slightly,
March 26, 1971, byJ. H. Thomas.)
Jasper Ridge and Searsville Lake have long been an important collecting area
for the botanists and students of Stanford University. Botanical collections
were first made in this area about 1860 by H. N. Bolander and have continuedto the present.
Many theses and scientific papers have been written that bear partially or
directly on the area. Those that have been used in the present study are those
b,y Cooper (1922), Chaney (1925), Springer (1935), Moeur (1947), and Thomas (1958,1961). The nomenclature used is the same as that in the latest flora of the area
(Thomas, 1961). The standard floras of California (Abrams & Ferris, 1923-1960;Jepson, 1909-1943, 1925; MUnz, 1959) have been consulted.
THE VEGETATION OF THE JASPER RIDGE BIOLCGICAL EXPERIMENTAL AREA
The vegetation ,of Jasper Ridge may be divided into five distinct associations.
These are oak-madrone forest, oak-woodland, chaparral, grasslands, and the aquaticflora of Searsville Lake. The areas of transition between the first four associa
tions may be either gradual or abrupt, so there mayor may not be an intermingling
of their species complexes. In the following lists, only those species either
confined to, or indicative of, an association will be listed for that association.
The more densely wooded forest, occurring mainly upon the steep north-facingslopes of the ridge, may be termed the oak-madrone forest. The dominants are
Quercus ap.rifo1ia and Arbutus Inp.nziesii. Indicative species are:
trees: ~lercus a~rifo11a
Quercus kelloe~ii
Umbellularia ca1ifornica
shrubs: Rosa californica
Rosa evmnocarpaRubus ursinus
Holodiscus discolor
herbs: Adiantum pedatU1l1var. aleuttcum
PitvroRramma trianp.ularts
Pnlvstichum munttum
Aesculus californica
Arbutus menziesii
Qsmaronia cerasiformisRhamnus crocea ssp. croceaDirce occidentalis
AouileRia formosaVar. truncate
Thelict.rum polvcaroumDAntaria californica
Ptaridium aouilinumvar. oubescens
Desch~mpsia elon~ata
Fritillarta lanceolataDtsnorum hookeri
Smilecina ~acemose
var. amplexicaulis
Smilaeine stellate
var. sp-ssifoUa
Tr 1111um chlorooetalmn
Corallorhiza striata
HeMnarta unalaRcenstsvar. eleta
Silane c~rnica
var. 9alifornieaFra~aria ealifornica"
Anthriscus scancHclna
Senicula crassicaulis
Trientalis latifolta
Nemoohtla hl"lteronhvlla
PQolistoma 811ritum
Cvno~lossum Rranoe
Satl1reja d01U!lasU
Scroohularia cali forntca
Lontcera hispidula \Hierectum albiflorum
Adenocaulon bicolor
The streambank vegetation along San Francisquito Creek may be included as a sub
unit of the oak-madrone forest association, as the two types here intermingle, with
many of the species common along the creek being found along its minor tributaries
in the oak-madrone forest. Some of these species are also found along Corte deMadera Creek and the moist ravines above Searsville Lake. These are:
trees: Seouoia sempl"Jrvirens
§Alli laevt!:!at,e
Salix lasiendra
Salix lasioleoi8
Alnus rhombifolia
shrubs: Corvlus californica
Whinolea modestaGrossularia divaricate
Grossularia leptosma
Phvsoearnus canitatus
Rubus parviflorusvar. velut.inus
herbs: Urtiea holosericea
Nastl1rtium offie inaleReuehera micrantha
Conium maculatum
Heracleum maximum
UmbelDllaria ealifornica
Acer macroohvlluJn
~ ME'-undoyare californica
Cornus californica
Cornus g,lahrata
Prunus emarRinataPrunus subcordata
Amelanchie~ oellide
Ellnon~us occtdentelisLonicera involucrata
Artemis is dOllE?lasiana
Mentha Pllle~ium
Mlmulus p.uttatnsBac~hArls dOllP-lasii
Helentum puberulumSenecio miklmioides
The more openly yooded forest, occurring upon the flatter, gently sloping areasof the ridge may be termed the oak-woodland. The characteristic species is Qnercusdouglasi!. Species indicative of this association are:
trees: Quercus douelastt
herbs: Calochortus Albus
Brodiaea lutp,a
Montia perfoliata
Delnhinium patens
Lathvrus vestitus
ssp. puberulusVieia americana
var. !!!.!.o.m:
Viela ext~ua
Clarkia unRuiculataCaucalls microcaroa
Castilleja affinis
~edicularis densiflora
Aster chtlensls
Madia exi!:!ua
Erionhvllum lanatumvar. arachnoideum
The chaparral association is found on the gentle south-facing slopes and flatter
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8~eas on the crest of the ridge. The dominants are Adenostoma fasclculatum, CeR"othuscuneatus var. d~bius, and Arotostapbylos crustacea var. crustacea. Indicative
species are:
shrubs: Quercus dumosa
9uercus dwata
gperou~ vislizeniivsr. frutescens
Clematis lastantha
RiMs malvaceum
~denostoma fasciculatum
geroocsrous betuloides
Prunus i1101fo118
Photlnta arbutifolia
Ceanothus ouneatus
vsr. dubius
herbs: DeJ.phinium.'~a.1ifornicumL(')tusscop~rius
Hesperollnon micr8nt~~
Hellanthemum scoparium
var. vulaare
Convolvulus occidentalis
Erlastrum abramsii
Navarretta heterodoxa
Scutella~is tuberosa
9aanothus soredietus
Ceanothus thvrsiflorus
~laoothamnus arcuatus
Garrva elliotica
Arctostaohvlos crustacea
var. orustacea
~riodictvon californicumLeoechinia cslvci.na
Diplacus eurantiacus
Artemisia oalifornlca
O~obanche bulbosa
Galium nuttell!i
Sambucus mexicana
1riodanus biflor~
Aster radulinus
Lavis hieractoides
Eriophvllum confertiflorum
Much of the Jasper Ridge, especially along its crest, consists of grasslands.
Most of this association is on flat or gently sloping land, but in many placesit extends up and over the steeper slopes where the original chaparral has been re
moved to provide for more grazing area. Here and there, especially on the steeper
slopes, individuals of Quercus sQrifolia, Q. douelasi\, and Q. kelloei~ may beencountered. Typical grassland herbs are:
Brf-za minor
Bromus c~rinatus
Bromus mollis
Bromus racemosusBromus rubens
testuoa mvuros
Melioa imOArfect~
Poa scabrella
Elymus Qlaucus
Hordeum hvstrix
Lolium ~lttflorum
Lolium tremulentum
Airs earvoohvlla
Avena barbat.a
Avena. fatua
Holeus lanatusGastridium ventricosum
Calohortus luteus
Brodiae~ ele~ans
Brodiaea hycinthinsBr.odiaea.laxe
Brodiae~ pulchella
SlsyrinchiWTJ bell1lm
~r10gonum nudum
Ertoeoovm vimineum
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THleea erects
Alchemilla occidentalis
Lotus ID+cranthus
Lotus purshianus
Lotus suhoinnatus
Luoinus densiflorus
Lupinus bicolor
var. mierophvllus
Lupinus nanusTrifolium barbi~erum
Trifolium Qifidum
.. var. dec.1plens .Trifolium eiliolatum
Trifoli~ fucatum
Trifolium gracilentum
Trifolium microcephalum
:frlfolium variegatum
Erodium botrys
Erodium circutarium
~rodium ohtuspUcatum
Qeranium dissectumGeranium molle
Eremocarpus seti~erus
Clarkia purourea
ssp gyadrivulnera
Ca1apdrinla ei1i~tavar. lllilnziesii
Month st>athulataCerastium viseosum
Silene Ralliea
Delphinium hesoerium
Delphinium var!e~atumvar. ealifornicus
Eschseholzia ea1iforniea
~tystemon californieus
Athvsanus pnsillus
Lepidium nitidumCentuneu1us minimusGilla e1ivorum
Llnanthus androsaceous
Linanthus bico10r
Linanthus dichotomus
Linanthus linif10rus
Llnanthus parviflorusNavarretia viseidula
Pholox eracilis
Nemop~i1a Menzies!!var. menziesii
Nemophila menzies!ivar. atomAria
Amsinekia intermedia
CX'v:ptanthamicromeres
Pla~iobothrys nothofulvus
P1aeiobothrys tenel1usMonarde11a vil10sa
var. vil10sa
Pop.o€vne seroy1loidesSalvia co1umbarae
.cordv1anthus pilosusLinaria texana
Orthocarpus attenuatus
Orthocarous densiflorus
Orthoearous erianthusvar. eriant,hus
Orthocarous ourourascens
var. purol~ascens
Orthocarous pusi11us
Planta~o erecta
Clarkia pnrpures
ssp. viminea
Oenothera Qvata
ErvnRium maculetumLomatium dasv~arpumLomat.hun utricnlatum
Senicula bipinnatifida
ssp. -pstu1umDodecatheon hendersonii
ssp. cruciatnm
Micl'ocale quadraMularis
Plect.ritisei1iosa
ssp. !nsi.p,nis
Plectritis macroc~A€oseris erandifld a
Hvpochaeris E!labraMlcroseris doup-lasii
ssp. doudasii
Chaetopappa a1sinoide~
Eri€eron fo1iosusGrindelia cemoorumGrindelia hirsutu1a
Lessin~ia germanorumval'. tenuioes
Lessinpia holo1euc~var. ho101euca
Evax soorsif10ra
Gnaohalium QuroureumMlcroous californiclls
Psi10carphlls tene11us
Fe1ianthel1a californica
Wyeth ia ammstifo1ia
Achyrachaene mollis.Hemizon i8 cOl'vmbosaHemizonia l11zulaefolia
ssp. l'udis
LaRonhv11a ramosissima
Lavie platye10ssa
ssp. camoestris
Madia BracHis
Baeria chrvsostoma
ssp. era~ilis
Many of the species listed above are found in the serpentine soil of the meadow
on the crest of Jasper Ridge, but those species in the following list are confined
solely .to this serpentine.
Festuca lJacifica
Sitanion jubatllln
Agrostis microphy11~
Stipa pu1chra
Junclls phaeoceoha1usCalochortus venustus
Allium amolectensAllium breweri
,Il.lliumlacunosllln
Brodiaea terl'estris
~r1~ dou~lasii
Astra~a1us gambel1ianus
Crvotantha f1accida
Mimulu~ doue1asii
Qrthocarous lithosn~rmoides
Calvcadenia mu1tig1andu10sa
ssp. robusta
Many weedy species have invaded Jasper Ridge that are confined to disturbed areas.
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These are in the main found in the well trampled land to the north and west of the
ridge abutting upon Searsville Lake, but many of them occur along the roadsides on
the ridge proper. Introduced weeds of disturbed areas are:
Bromus commutatus
Bromus rieidusEoa annua
Hordeum lenorinum
Cspsells ~-~~
Rsohanus sativus
Sisvmbrium officinalis
Melilotus indicus
Medica~o R91~o~ha
val'. ~llgAris f. vul~ar!s
Medica!:!osativa
Victa sativa
Malva parviflora
Convolvulus arvensi~
Planta~o lanceola~
D!osaeus fullonum
RUmex acetosellaRumex CriS01,lS
Brasslcs ~amnestris
Brassles nip-ra
Picris ft£h1oidesSonehus esper
§onchus olereceusTeraxacum officinale
Anthemts cotula
Senecio vulgarisCarduus tenuiflorus
Centaurea ealcitrepa
Centaurea melitensisCentaurea solstitialis
Cirsium vul~are
SilybuJIlmarianum
.The aquatic and simiaquatic plants in and around Searsville Lake comprise thelast association. These are:
Azolla filiculoides
Tvpha lat ifolia
SparQanum eurvcaroum
Potamo~eton folios~s
var. mecellus
Potamo~eton pusillusvar. minor
Alisma plantago-aQuat\ca
A~rostis exaratavar. exarata
Polvpogon monspeliensis
PaspaJll{lld isUchU!!!Scirpus scutusIris pseudoacornus
The following annotated list consists of:82 Families
273 Genera
458 Species, Subspecies, and Varieties
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Polvgonum cocci.neum
Poly~onum laoathtfolium
Polvp-onum punctatumAtriolex patula
var. hasta:t,a
Lvthrum hvssopifolia
Epilobium adenocaulonval'. occidentale
Oenanth~ sarrnentosa
SaHdMo occi.dentalisGnanhalium oalustreXanthium strumarium
Artemisia biennis
ANNOTATED LIST OF THE VASCULAR PLANTS
Class F111c1nae
1. Salviniaceae
*Azolla filiculoides Lam.Searsville Lake.
2. Polypodiaceae
Adiantum jordon! Muell.
Reported by Cooper (1922) from the oak-madrone forest.
~diantum oedatum L. var. aleuticum Rupr.
Dense oak-madrone forest on north-facing slope above San Francisquito Creek.*Pellaea mucro nata (Eaton) Eaton
x Sandstone outcroppings on north-facing slope above San Francisquito Creek.PitvroQramma trianQularis (Kaulf.) Maxon
Common in oak-madrone forest, occasional in chaparral.Polvstichum munitum (Kaulf.) Presl.
Dense oak-madrone forest on north-facing slope above San Francisquito Creek.
Pteridium aauilinum (L.) Kuhn var. pubescens UndeN.Oak-madrone forest.
Class Gymnospermae
1. Pinaceae
Xpseudotsuga menziesii (Mirb.) Franco
Scattered on the north-facing slope above San Francisquito Creek.
2. Taxodiaceae
~ .Seauoia semoervirens (Lamb.) Endl.
Common along San Francisquito Creek.
Class Angiospermae
Subclass Monocotyledoneae
1. Typhaceae
*Tyoha latifolia L.Searsville Lake.
2. Sparganiaceae
*SoarQanium eurvcarpum Engelm.Searsville Lake.
3. Potamogetonaceae
*PotamoQeton folios~ Raf. var. macelDls Fern.Searsville Lake.
*PotamoReton pusillus L. var. minor (Biv.) Fern. & Schub.
4. Alismataceae
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*Alisma plantaeo-aquatica L.Searsville Lake.
5. Gramlneae
Festuceae
~ .Briza m~nor L •
.,r Grasslands and openly wooded· slopes.Bromus carinatus H. & A.
Grasslands and openly wooded slopes.Bromus comml1tatu~ Schrad.
Disturbed areas in grasslands.Bromus laevioes Shear
Reported by Springer (1935) from a "shady slope".*Bromus mollis L.
The most common grass in grasslands and on openly wooded slopes.Bromus racemosus L.
Grasslands and openly wooded slopes.Bromus riRidus Roth.
Disturbed areas in grasslands.Bromus ruoons L.
Grasslands.
Bromus tectorum L.
Reported by-Springer (1935) from "open field near picnic grounds".Festuca elmeri Scribn. & Marr.
Reported by Moeur (1947) from "wooded hillsides".
Festuca mvuros L.Grasslands and disturbed areas.
*Festuca occidentalis Hook.
"Moist areas in redwoods and redwood-Douglas fir forests •••• "
(Thomas, 1961). Collected by Rattan (~• .n.) at "Searsv1l1e."Festuca octo flora Walt.
Reported by Moeur (1947) from "openly wooded hillside".
*Festuca PAcifica Piper
Serpentine soil in meadow.*Melica imnerfecta Trin.
Oak madrone forest.
Melica torrevana Scribn.
~ Reported by Springer (1935) from "grassy field near picnic grounds".'Poa annua L.
Disturbed areas.
*~ scabrella (Thurb.) Benth. ex Vasey
Grasslands and openly wooded slopes.
Hordeae
,cElymus glaucus Buckl.
Grasslands and openly wooded slopes.
Hordeum brachvantherum Nevski
Reported by both Springer (1935) and Moeur (1947) as limited to the "serpentine ofthe meadow". Listed as H. nodosum L.
*Hordeum hystrix Roth.Grasslands.
Hordeum leporimlm LinkDisturbed areas.
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~Lo1ium mu1tif1orum Lam.
Grasslands and openly wooded slopes.Lo1ium tremu1entum L.
X Grasslands and openly wooded slopes.Sitanion iu~tum Smith
Serpentine soil in the meadow.
Aveneae
yAira sarvophv11~ L.
~ Grasslands and openly wooded slopes.Avena barbata Brot.
Grasslands and openly wooded slopes.Avena fatua L. var. fatue
Grasslands and openly wooded slopes.*Deschampsia danthonioides (Trin.) Munro ex Benth.
"Low moist areas where water has stood during the winter and early Sprlng •••• "
(Thomas, 1961). Collected by Mason (May 13, 1921) at "Jasper Ridge. n
*Deschamnsia elongata (Hook.) Munro ex Benth.Oak-madrone forest.
*Ho1cus lanatus L.
Grasslands.
Koe1eria mecrantha (Ledeb.) Spreng.
Reported by Moeur (1947) from "open fields and on openly wooded slopes". Listed8S !. cristata (L.) Pers.
'.Agrostideae
*A~rostis exarats Trin. var. exarataSearsville Lake.
*Aerostis microphv11a Steud.
Serpentine soil in the meadow.
Agrostis semiverticillata (Forsk.) Christ.
y Reported by Moeur (1947) from "wooded hillside". Listed as A. verticillata VilI.Gastridium ventricosum (Gouan) Schinz & TheIl.
1< Grasslands.Polvpo~on interruptus RBK
Reported by Moeur (1947) from "near the lake shore". Listed as f. lutosus (Poir)Hitchc.
*Polynogon monspeliensis (L.) Desf.
Searsville Lake. Abrams 1639 was collected at "Jasper Ridge."
*Stjpa pulchra Hitchc.
Serpentine soil in the meadow.
Phal~rideae
*Hierochloe occidenta1is Buckl.
"A common grass in redwoods and redwood-Douglas fir forests •••• " (Thomas, 1961).Rattan (March 1867) 'Wes collected at "Searsvll1e.1f
Panlceae
*Paspalum distichum L.Searsvi1le Lake.
6. Cyperaceae
Carex barbarae Dewey
Reported by Moeur (1947) from "creek 'tank".
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Cvperus eraqrostis Lam.
Probably Moeur's ~ virens Michx. from "San Francisquito Creek".*Scirpus acutus Muhl. ex Bigel.
Searsvi1le Lake
7. Juncaceae
~Juncus occidentalis (Cov.) Wieg.
Reported by Moeur (1947) from "San Francisquito Creek". Listed as J. tenuis
var. conqesta Engelm.
Juncus patens Meyer
San Francisquito Creek ann wet grasslands.
Juncus phaeocephalus Engelm.Serpentine soil in the meadow.
~Luzula multiflora (Retz.) Lejeune
Oak-madrone forest and openly wooded slopes.
8. Melanthaceae
1<Zvqadenus fremontii (Torr.) Torr. ex Wats.· var. fremontii
Wooded hillsides and chaparral.
9. Liliaceae
*Calochortus albus Dougl. ex Benth.Oak woodland.
*Calochortus luteus Dougl. ex Lindl.
Grasslands and openly wooded slopes.
*Calochortus venUStU5 Dougl. ex Benth.
Serpentine soil in the meadow.
*Chloroqalum pomeridianum (DC.) KunthGrasslands and edges of chaparral.
)r Frit illar ia lanceolata Pursh
Oak-madrone forest.
Lilium pardalinum Kell.
Reported by Moeur (1947) from "deep shade of the redwood area".
10. Convallariaceae
*Disporum hookeri (Torr.) Nichols.
Oak-madrone forest on north-facing slope above San Francisquito Creek.
*Scoliopus biqelovii Torr.
"Moist slopes and along creek banks in redwood forests •••••• (Thomas, 1961).
Collected by Rattan (March 1867) at "Searsville."
*Smilacina racemosa (L.) Desf. var. amplexicaulis (Nutt.) Wats.
X Oak-madrone forest.Smi1acina ste11ata (L.) Desf. var. sessi1ifo1ia .(Baker) Henders.
X Oak-madrone forest.lrillium chloropetalum (Torr.) Howell
Oak-madrone forest, especially common along streambanks.
11. Amaryllidaceae
*Allium amplectens Torr.
Serpentine soil in the meadow.
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*Al1ium breweri Wats.
Serpentine soil of the meadow and adjacent slopes.
*Al1ium dich1amydeum Greene
Sandstone outcroppings on north-facing slope above San Francisquito Creek.*Allium lacunosum Wats.
Serpentine soil in the meadow.Allium serratum Wats.
Serpentine soil of the mendow and adjacent slopes.*Brodiaea e1eQans Hoover
Grasslands.
~Brodiaea hyacinthina (Lindl.) Baker
x Grasslands and openly wooded slopes.rBrodiaea laxa (Benth.) V·fats.
Grasslands and openly wooded slopes.
Brodiaea lutea (Lindl.) Mort.Oak woodland.
*Bro~iaea pulchella (Salisb.) Greene
Grasslands and openly wooded slopes.*Brodiaea terrestris Kel1.
Serpentine soil in the meadow.
12 •. Iridaceae
Iris macrosiphon Torr.
Reported by Springer (1935) from "edge of the road through the chaparral abovethe lake."
*Iris pseudacorus L.
~ Searsville Lake.?isyrinchium bellum Wats.
Grasslands and openly wooded slopes.
13. Orchidaceae
*Corallorhiza striata Lindl.Oak-madrone forest.
~abenaria unalascensis (Spreng.) Wats. var. ~ (Jeps.) CorrellOak-madrone forest.
Subclass Dicotyledoneae
14. Salicaceae
Populus trichocarpa T. & G. ex Hook.
Reported from San Francisquito Creek by Chaney (1925).Salix hindsiana Benth.
~ported by Moeur (1947) from "edge of road above lake."
*~ laeviQata Bebb.Corte de Madera Creek, San Francisquito Creek, and marshy area at southern end ofSearsville Lake.
*Salix lasiandra Benth.
Streambanks and marshy area at southern end of Searsville Lake.
*Salix 1asio1epis Benth.
Streambanks and marshy area at southern end of Searsvi11e Lake.
15. Juglandaceae
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Juqlans hinds ii Jeps.
Reported from the edge of San Francisquito Creek by both Chaney (1925) (as J.californica wats.) and Moeur (1947). Specimens of this species are unknownfrom the Santa Cruz Mountains.
16. Betulaceae
~Alnus rhombifolia Nutt.
San Francisquito Creek.
17. Corylaceae
*Corylus californica (A. DC.) Rose
Shady streambanks.
18. Fagaceae
*Quercus aqrifolia Nee
The principal oak of the oak-madrone forest, to a lesser extent in the oak
woodland and on openly-wooded slopes.
*Quercus douqlasii H. & A.
The prinicpal oak of the oak-woodland and the openly-wooded slopes, occasionallyin the oak-madrone forest.
*Quercus dumosa Nutt.
Chaparral.
*Quercus durata Jeps.
Chaparral.
*Quercus kelloqqii Newb.Oak-madrone forest and oak-woodland.
Quercus lobata Nee
Openly wooded slopes on the lower edges of Jasper Ridge, occasional.
*Quercus X morehus Kell.
Collected by Fisher (March 19, 1898) on "Jasper Ridge."
*Quercus wislizenii A. DC. yare frutescens Engelm.
Chaparral.
19. Urticaceae
)f Urtica holosericea Nutt.
Streambanks.
20. Loranthaceae
*Phoradendron villosum Nutt.
Parasitic on oaks (Quercus aqrifolia, Q. douqlasii, Q. lobata), and occasionallyon Adenostoma fasciculatum.
21. Polygonaceae
*Chorixanthe diffusa Benth.
Dry rocky areas in chaparral and grasslands.
~ Erioqonum nudum Dougl. ex Benth.Grasslands.
*Erioqonum vimineum Dougl. ~x Benth.Grasslands.
Polyqonum aviculare L.
Reported by Maeur (1947) from "edge of road above the lake."
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*PolYQonum coccineum Muhl. ex Wi11d.Searsville Lake.
*Polyqonum lapathifolium L.Searsv1.Ue Lake.
*PolYQonum punctatum Ell.Searsville Lake.
*Rumex acetose1la L.
Disturbed areas.
Rumex conQlomeratus Murr.
Reported by Moeur (1947) from "along roadsides and near the lake."
Rumex crispus L.Disturbed areas around Searsvi1le Lake.
Rumex obtusifolius L.
Reported by Springer (1935) from "roadsides, near the lake, and near buildings,"
and by Moeur (1947) from "edges of the lake and along roadsides."
22. Chenopodiaceae
*Atriplex patula L. var. hastata (L.) GraySearsville Lake.
23. Portulacaceae
*Calandrinia ciliata (R. & P.) DC. var. menziesii (Hook.) Macbr.Grasslands.
~Montia perfoliata (Donn ex Willd.) Howell
Oak-woodland and moist openly wooded slopes.
*Montia spathulata (Dougl.) Howell
Moist grassl?nds and openly wooded slopes.
24. Caryophyllaceae
Arenaria douQlasii Fenzl ex T. & G.
~ Serpentine soil in the meadow.Cerastium viscosum L.
~ Grasslands and disturbed areas.Silene californica Durand
Oak-madrone forest.
§ilene Qallica L.Grasslands.
*Sperqularia marina (L.) Griseb. var. marina
~ Baker (1959) was collected at "Searsville."Stel1aria media (L.) Cyril1
Grasslands, openly wooded slopes, oak-woodland, and oak-madrone forest.
25. Ranunculaceae
Actaea arquta Nutt .ex T. & G.Occasional in dense oak-manrone forest on north-facing slope above San FrancisquitoCreek.
~Quileqia forrnosa Fisch. var. truneata (F. & M.) JonesOak-madrone woodland.
*Clematis lasiantha Nutt.
Chaparral.
Clematisliqust ieifolia Nutt.
Reported by Springer (1935) from "bank of San Francisquito Creek."
-12-
*Delphinium californicum T. & G.
Chaparral.
Delphinium hesperium GrayGrasslands.
*Delphinium patens Benth.Oak-woodland.
~lphinium varieqatum T. & G.
Grasslands and openly wooded hillsides.*Ranunculus californicus Benth. var. californicus
Grasslands and openly wooded hillsides.
Ranunculus hebecarpus H. & A.
Reported from the oak-madrone forest by Cooper (1922).Ranunculus muricatus L.
Reported by Springer (1935) from "moist shady places near the banks of San Fran
c isquito Creek".
*Thalictrum polycarpus (Torr.) Vlats.
Oak-madrone forest, occasional in the chaparral.
26. Berberidaceae
*Berberis pinnata Lag.
Sandstone outcroppings on north-facing slope above San Franeisquito Creek.
27. Lauraceae
i*Umbellularia californiea (H. & A.) Nutt.
Streambanks and oak-madrone forest.
28. Papaveraeeae
~ Eschscholzia ealifornica Cham.
Grasslands.
*Platvstemon californieus Benth.Grasslands.
29. Crue iferae
Athysanus pusillus (Hook.) GreeneGrasslands.
Brassica campestris L.
Disturbed areas, occasionally in grasslands.
Brassica kaber (DC.) Wheeler
Reported by Moeur (1947) from "open fields and disturbed areas."
Brassica niQra (L.) KochDisturbed areas.
*Cardamine oliqosperma Nutt.
Oak-woodland and moist openly wooded slopes.
Capsella bursa-pastoris (L.) Medic
Disturbed areas and grasslands.*Dentaria californica Nutt. var. californica
Oak-madrone forest.
)CLepidium nitidum Nutt.Grasslands.
*Nasturtium officinale R. Br.
Streambanks.
-13-
Raphanus sativus L.Disturbed areas.
~Thvsanocarpus curvipes Hook. var. curvipes
Openly wooded hillsides.
lhvsanocarpus curvipes Hook. var. eleqans (F. & M.) Robins.
Reported by Springer (1935) from "openly wooded hillside."
Jropidocarpum qracile Hook.
Reported by Springer (l935) from "open hillsides, especially near the edges of
areas of chaparral."
30. Crassulaceae
~edum spathulifolium Hook.
Reported by Moeur (1947) from "shaded moss-covered rocke in the heavily woodedforest."
Jillaea erecta H. & A.Grasslands.
31. Saxifragaceae
Heuchera micrantha Dougl. ex Lind1.
San Francisquito Creek.
Lithophraqma affinis Gray
Oak-madrone forest, oak-woodland, and openly wooded slopes.
Lithophraqma heterophvlla (H. & A.) T. & G.
Reported from the oak-madrone forest by Cooper (1922) (as Tellima heterophylla).
*Saxifraqa californica Greene
Oak-madrone forest, oak-woodland, and openly wooded slopes.
)CTellima qrandiflora (Pursh) Dougl. ex Lind1.Reported by Moeur (1947) from "deep shade of tha redwood zone."
32. Hydrangeaceae
*Whipplea modesta Torr.
San Francisquito Creek.
33. Grossulariaceae
*9rossularia californica (H. & A.) COv. & Britt.
Oak-madrone forest, oak-woodland, openly wooded hillsides, and occasionally at
edges of the chaparral.
*Grossularia divaricata (Dougl.) COv. & Britt.Streambanks.
*Grossularia leptosma Cov.Streambanks.
~Ribes q1utinosum Benth.
Reported by Moeur (1947) from "thicket at the edge of the lake."*Ribes malvaceum Smith
Chaparral.
34. Rosaceae
*Adenostoma fascicul~tum H. & A.
The index plant of the chaparral.
~Alchemilla pccidentalis Nutt. ex T. & G.Grasslands.
·-14-
*Cercocarnus betuloide~ Nutt. ex T. & G.
Chaparral.*Fra~aria californica C. & S.
Oak-madrone forest on north-facing slope above San Francisquito Creek.XHolodiscus discolor (Pursh) Maxim.
Oak-madrone forest and streambanks.
~Phvsocarpus capitatus (Pursh) KuntzeStreambanks.
~Potentilla Rlandulosa Lindl.
Oak-yoodland and openly wooded hillsides.Rosa californica C. & S.
--O;k-madrone forest.
*Rosa Rymnocarpa Nutt. ex T. & G.Oak-madrone forest.
Rosa spithamea Wats.
Reported by Springer (1935) from "openly wooded slope at the top of the hill nearthe lake."
Rubus oarv1florus Nutt. var. velutinus (H. & A.) GreeneStreambanks.
*Rubus ursinus C. & S.
Oak-madrone forest, especially along streambanks.
35. Amygdalaceae
~Osmaronia cerasiformis (T. & G. ex H. & A.) GreeneOak-madrone forest.
*Prunus ~marRinAta(Dougl.) Walp.Streambanks.
*Prunus 1licifolia (Nutt. ex H. & A.) Walp.Chaparral.
*Prunus subcordata Benth.Streambanks.
36. Malaceae
*Amelanchier pallida GreeneStreambanks.
*Photinia arbutifolia (Ait.) Lindl.
Chaparral, occasionally in oak-yoodland or oak-madrone forest.
37. Fa baceae
*Astragalus Rambellianus ~heldon
Serpentine soil in the meadow.
*Cvtisus maderensis ~~sf.
~ Thomas ~ yas collected~in oak-woodland."Glvcyrrhiza 1epidota Pursh yare ~lutinosa (Nutt.) Wats.
Reported by Springer (1935) from "field that was dry, but close to the marshy
part of the lake."
Lathvrus vestitus Nutt. ex T. & G. ssp. puberulus (White ex Greene) Hitchc.Oak-woodland.
Lupinus bicolor Lindl. var. microphvllus (Wets.) SmithGrasslands.
Lupinus densiflorus Benth.Grasslands.
Lupinus formosus Greene var. formosus
Reported by Moeur (1947) from "open fields."
-15-
~upinus ~ Dougl. ex Benth.Grasslands.
Lotus humistratus Greene
Reporte~ by Moeur (1947) from "grassy hillsides."*Lotus micranthus Benth.
Grasslands and openly wooded slopes.
*Lotus purshianus (Benth.) Clem. & Clem.
Grasslands and openly wooded slopes.
*~otus scoparius (Nutt.) OttleyChaparral.
*Lotus striqosus (Nutt.) Greene
Collected by Davis (April 10, 1903) on "North slope, Searsville Ridge."
*Lotus subpinnatus Lag.Grasslands.
Melilotus albus Desr. ex Lam.
- Reported by Moeur (1947) from "along creek banks."
Melilotus indicus (L.) All.Disturbed areas.
Medicaqo arabica (L.) Huds.Disturbed areas.
YMedicaQo pOlymorpha L. var. vulQaris (Benth.) ShiMers f. vulqaris
Disturbed areas and grasslands.MedicaQo sativa L.
y Roadsides and disturbed areas.Psoralea physodes Dougl. ex Hook.
)( Oak-woodland and oak-madrone forest.I!ifolium albopurpureum T. & G.
Reported by Moeur (1947) from "moist, grassy fields."*Trifolium barbiQerum Torr.
Grasslands and openly wooded slopes.
*Irifolium bifidum Gray var. decipiens GreeneGrasslands and openly wooded slopes.
Irifolium ciliolatum Benth.Grasslands.
*Trifolium fucatum Lindl.
Thomas (1958, p. 460) states, "On Jasper Ridge this plant is very common and
almost a weed in low moist areas, especially where cows have ~vergrazed and have
trampled the soil dur ing the rainy season." Grasslands.
Trifolium qracilentum T. & G.
Grasslands and openly wooded slopes.
'Trifolium microcephalum PurshGrasslands.
*Trifolium tridentatum Lindl.
Grasslands, openly wooded slopes and oak-woodland.
*Trifolium varieqatum Nutt.Grasslands.
Trifolium wormsk;oldii Lehm.
Reported by Moeur (1947) from "along stream banks."
*Vicia americana Muhl. ex Willd. var. miD£r Hook.Oak-woodland.
Vicia anqustifolia L.
Reported by Moeur (1947) from "fields and along roadsides."
Vicia exiqua Nutt.Oak-woodland.
~..?.ili sativa L.Disturbed areas.
Vicia villosa Roth.
Reported by Moaur (1947) as "mostly along roadsides."
-16-
38. Geraniaceae
)(Erodium botrys (Cav.) Berto1Grasslands.
Erodium circutarium (L.) L'Her.Grasslands.
Erodium moschatum (L.) L'Her. ex Ait.
Reported by Moeur (1947) from "fields and pasture lands."
*Erodium obtusip1icatum (Maire, Wei11er, & Wilczek) HowellGrasslands.
~Geranium dissectum L.
Grasslands.
*Geranium molle L.
Grasslands and openly wooded slopes.
39. Oxa lidaceae
*Oxalis oreqana Nutt.
P~a.ulson(Apr. 1915) was collected at "Jasper Ridge near Searsville Lake."
40. Linaceae
*Hesperolinon micranthum (Gray) Small
Chaparral.
41. POlygalaceae
Po1yqala californica Nutt.
Reported by Springer (1935) from "under the shade of some of the chaparral shrubs
growing on a lightly northward slope."
42. Euphorbiaceae
*Eremocarpus setioerus (Hook.) Benth.
Disturbed areas in grasslands.
)( 43. AnacardiaceaeRhus diversiloba T. & G.
Common.
44. Celastraceae
*Euonvmus occidentalis Nutt. ex Torr.Streambanks.
45. Aceraceae
*~ macrophyllum purshStreambanks.
*~ nequndo L. var. californicum (T. & G.) SargeStreambanks.
46. Hippocastanaceae
Aesculus californica (Spach) Nutt.
Oak-madrone forest, especially along streambanks.
-17-
ssp. rubicunda
This is probably the species which Sprin
arnoena (Lehm.) Lilja.
47. Rhamnaceae
*Ceanothus cuneatus (Hook.) Nutt. var. dubius Howell
Chaparral.*Ceanothus sorediatus H. & A.
Chaparral, occasionally in oak-madrone forest.
Ceanothus th~siflorus Esch.
Chaparral •.
Rhamnus californica Esch. ssp. californicaOak-woodland and oak-madrone forest.
*Rhamnus crocea Nutt. ssp. croceaOak-madrone forest.
48. Malvaceae
)CMalacothamnus arcuatus (Greene) Greene
Chaparral.
Malva parviflora L.Disturbed areas.
Sidalcea ma1vaeflora (DC.) Gray ex Benth.Grasslands.
49. Cistaceae
*Helianthemum scoparium Nutt. var. vulqare Jeps.
Chaparral.
50. Vio1aceae
*Viola ocellata T. & G.
Dudlev (Apr. 1, 1893) was collected from "Hill above Searsville."
51. Datiscaceae
*Datisca 910merata (Presl) Bai11.
San Francisquito Creek.
52. Thyme1aeaceae
*Dirca occidentalis GrayOak-madrone forest.
53. Lythraceae
*L~thrum hvsso~ifolia L.Searsville Lake.
54. Onagraceae
Boisduvalia densiflora (Lindl.) Wats.
Reported by Moeur (1947) from "moist ~round.around the lake."
Clarkia purpur~a (Curtis) Nels. & Macbr. ssp. quadrivulnera (Dougl.) Lewis & Lewis
Grasslands and openly wooded hillsides.
*Clarkia purpurea (Curtis) Nels. & Macbr. ssp. viminea (Dougl.) Lewis & Lewis
Grasslands and openly wooded hillsides.
Clarkia rubicunda (Lindl.) Lewis and Lewis
Grasslands and openly wooded hillsides.
(1935) and Moeur (1947) list as Godetia
-18-
Clarkia unquicu1ata Lindl.
Oak-woodland.
*Epi10bium adenocau10n Hausskn. var. occidentale Tre1.Searsville Lake.
gpilobium panicu1atum Nutt.
Reported by both Springer (1935) and Moeur (1947) to occur along roadsides through
the chaparral.
~pilobium franciscanum Barbey
Reported by both Springer (1935) and Moeur (1947) to occur in the moist area nearSearsville Lake.
*Oenothera ovata Nutt.
Grasslands.
55. Umbe 11iferae
y Anthriscus 8candicina (Weber) Mansf.
~ Oak-madrone forest.Caucalis microcarpa H. & A.
)( Oak-woodland.Conium maculatum L.
Streambanks.
*Ervnqium aristu1atum Jeps.
Moist grasslands.*Foeniculum vulqare Mill.
Disturbed areas.
y "erae leum maximum Bartr.
Streambanks.
Lomatium dasvcarpum (T. & G.) C. & R.Grasslands.
~ !-~matium macroearpum (H. & A.) C. & R.
Reported by Moeur (1947) from "open hillsides."
Lomatium utriculatum (Nutt.) C. & R.
Grasslands and openly wooded slopes.*Oenanthe sarmentosa Presl •.
Searsville Lake.
X Osmorhiza chilensis H. & A.
Reportedby Moeur (1947) from "shady woods near San Francisquito Creek."Perideridia qairdneri (H. & A.) Mathias
Reported by Moeur (1947) from "both open and openly wooded hillsides" (as ~
qairdneri Gray).
Eerideridia kelloqqii (Gray) Mathias
Reported by Springer (1935) from "dry open hillsides" (as ~ kelloqqii Gray).
Sanicula bipinnatifida Dougl. ex Hook.Grasslands.
*Sanicula crassicaulis Poepp. ex DC.Oak-madrone forest.
Sanicula laciniata H. & A.
Reported by Springer (1935) from "edges of a road cut through the chaparral."
Tauschia kelloqqii (Gray) Macbr.
Reported by Springer (1935) from "an openly wooded slope~" as Velaea kelloQ9ii
(Gray) C. & R.
Torilis nodosa (L.) Gaertn.
Reported by Moeur (1947) from "openly wooded hillsides."
56. Cornaeeae
)Ccorn~s ~alifornica C. A. MeySan Franeisquito Creek.
-19-
eornus qlabrata Benth.Streambanks.
57. Garryaceae
*Garrva elliptica Dougl •
. Chaparra 1.
58. Ericaceae
*Arbutus menziesii Pursh
Dominant with Quercus agrifolia in the oak-madrone forest.
*Arctostaphvlos canescens Eastw.
fobrams 4990, collected on "Jasper Ridge, It bears the notation, "A. canescensEastwood? Poor specimen. A. E. " ,
*Arctostaphvlos crustacea Eastw. var. crustacea
Chaparral.
59. Primulaceae
*Anaqallis arvensis L.
Grasslands, oak-woodland, and disturbed areas in the chaparral.*Centriculus minimus L.
Moist grassland$.
*Dodecatheon clevelandii Greene ssp. patulum (Greene) ThompsonGrasslands and openly wooded slopes.
*Dodecatheon hendersonii Gray ssp. cruciatum (Greene) Thompson
Grasslands and openly wooded slopes.*Trientalis latifolia Hook.
Oak-madrone forest.
60. Gentianaceae
~ ~entaurium Qavvi (Jeps.) AbramsReported by Springer (1935) from "openly wooded slopes."
*Microcala Quadranqularis (Lam.) Griseb.Grasslands.
61. Apocynaceae
Yinca major L.
Reported by Moeur (1947) from "bank of San Francisquito Creek."
62. Convolvulaceae
Convolvulus arvensis L.
Disturbed areas.
Convolvulus occidentalis Gray
Chaparral.
')< 9m.Y9lvulus subacaulis (H. & A.) GreeneReported by Moeur (1947) from "meadows and pasture lands."
63. POlemoniaceae
~Collomia heterophylla Hook.
Reported by Moeur (1947) from "shaded areas of the wooded slopes."
*Eriastrum abr?msii (Elmer) Mason
Chaparral.
-20-
*Gi11a achilleaefolia Benth.
Grasslands, oak-woodland, and oak-madrone forest.
*Gi11a clivorum (Jeps.) GrantGrasslands.
Linanthus ambiquus (Rattan) Greene
Reported by Moeur (1947) from "open hillsides."Lin~nthus androsaceus (Benth.) Greene
Grasslands and openly wood~d slopes.
*Linanthus bicolor (Nutt.) Greene
Grasslands and openly wooded slopes.*Linanthus dichotomus Benth.
Grasslands.
*Linanthus liniflJ2J'_l1.S(B.enth.) GreeneGrasslands.
*Linanthus parviflorus (Benth.) Greene
Grasslands and openly wooded slopes.
*Navarretia heterodoxa (Greene) Greene
Chaparral.*Navarretia viscidula Benth.
X Grasslands.Pholox qracilis (HOOk.) Greene
Grasslands and openly wooded slopes.
64. Hydrophyllaceae
*Eriodictyon californicum (H. & A.) Torr.Chaparral.
*Nemophila heterophylla F. & M.Oak-madrone forest.
*Nemoqhila menziesii H. & A. var. menziesiiGrasslands.
Nemophila menziesii H. & A. var. atomaria (F. & M.) ChandlerGrasslands.
Phacelia californica Cham.
Reported by Moeur (1947) from "rocky hillsides."Phacelia imbricata Greene
- Reported by Springer (1935) from "dry rocky hillsides" (as~. californica var.imbricata Jepson).
~~~l~~~~~?auritum (Lindl.) Lilja ex Lindb.Oak-madrone forest.
65. Boraginaceae
Allocar~ chorisiana (Cham.) Greene
Reported by Moeur (1947) from "open fields."~Amsinckia inter~Edia F. & M.
Grasslands.
*Cynoqlossum qrande Dougl. ex Lehm.Oak-madrone forest.
*Cryptantha flaccida (Dougl.) Greene
Serpentine soil in the meadow.
Cryptantha leiocarpa (F. & M.) Greene
Reported by Springer (1935) from lithe more open places in the chaparral."*gryptantha micromeres (Gray) Greene
Dry, rocky grasslands.
Cryptantha torreyana (Gray) Greene var. pumila (Heller) Johnston
Reported by Moeur (1947) from "dry hillside."
-21-
}(Heliotrop1um curassavicurn L. var. oculatum (Heller) Johnston ex Tidestrom
Reported by Springer (1935) from "along the side of the road very close to thelake. "
*Pectocarve pus1lla (A. DC.) Gray
"Chaparral, open woods, and on serpentine •••• " (Thomas, 1961, p. 290).
Pla~iobothrvs nothofulvus (Gray) GrayGrasslands.
*Plagiobothrvs tenellus (Nutt.) GrayGrasslands.
66. Verbenaceae
Verbena lasiostachvs Link.Disturbed areas.
67. Labiatae
*Lepechiniq calycine (Benth.) Epling
Chaparral.)r Melissa officinalis L.
Reported by Moeur (1947) from "creek banks."
Mentha {lrvensis L. var. lanatEj Piper
Reported by Springer (1935) as "Frequent in moist places - near the overflow from
the watering trough, and at the edge of the lake."*Mentha pule~ium L.
Searsville Lake and San Francisquito Creek.*Monardella villose Benth. var. villose
Grasslands and openly wooded slopes.
*Po~o~yne serovlloides (Torr.) GrayGrasslands.
Prunella vulgaris L. ssp. lanceole~~ (Barton) HultenReported by Moeur (1947) from "banks of San Francisco Creek" (as ~z:unelle vulgaris L
*Salvia columbarlli Benth.Grasslands.
Satureja dou~lasii (Benth.) Briq.Oak-madrone forest.
*Scutellaria tuberosa Benth.
Chaparral.Stechvs bullate Benth.
~ Openly wooded slopes, oak-woodland, and oak-madrone forest.Stachls pvcnantha Benth.
Reported by Springer (1935) from "edge of the lake."
68. Solanaceae
*Petunia parviflora Juss.Searsville Lake.
Solanum nodiflorum Jacq.
Reported by Moeur (1947) from "the dry bed of San Francisquito Creek." (as 2,.
)( ni~rum L.).polanum umbelliferum Esch.
Oak-madrone forest, less common in the chaparral.
69. Scroph~ariaceae
Antirrhinum vexlllo-calyculatlJn1 Kell.
Reported by Springer (1935) from "edge of the shady area at the margin of the
lake." (as A. vagans Gray).*Castilleia affinis H. & A.
Oak-woodland.
-22-
Castilleia foliolosa H. & A.
Reported by Springer (1935) from "dry hillsides"and "the edge of the chaparral."
Collinsia heterophvlla Buist ex Grah.Oak-madrone forest and oak-woodland.
Collinsia sparsiflora F. & M. var. collina (Jeps.) Newsom
Reported by Springer (1935) from "steep, moist, open hillside above San Franc is
quito Creek" (as ~. §£arsiflora F. & M.)
Cordvlanthus pilosus Gray
Grasslands and openly wooded slopes.
*Diplacus aurantiacus (Curtis) Jeps.
Chaparral.*Linaria texana Scheele
Grasslands.
*Mimulus douqlasii (Benth.) Gray
Serpentine soil in the meadow.
*Mimulus quttatus DC.Streambanks.
*Orthocarpus attenuatus GrayGrasslands.
*Qrthocarpus densiflorus Benth.Grasslands.
*Orthocaxpus erianthus Benth. var. erianthusGrasslands.
Orthocarpus faucibarbatus Gray var. albidus (Keck) Howell
Reported by both Springer (1935) and Moeur (1947) from the serpentine soil of the
meadow (as Q. faucibarbatus Gray).
*Orthocarpus lithospermoides Benth.
Serpentine soil of the meadow.
Orthocarpus purpurascens Benth.var. purpurascensGrasslands.
~Orthocarpus pusillus Benth.
Openly wooded hillsides.*Pedicularis densiflora Benth. ex Hook.
Oak-woodland.
*Scrophularia califo~ c. & S.
Oak-madrone forest, occasional in chaparral.
70. Orobanchaceae
*Orobanche bulbosa Beck
Chaparral.Orobanche fasciculata Nutt.
Reported by Springer (1935) from "dry open hillside."
71. Plantaginaceae
*Plantaqo erecta MorrisGrasslands.
*Plantaqo lanceolata L.Disturbed areas.
*Plantaqo major L.Reported by Moeur (1947) from "near the lake,"
72. Rubiaceae
Galium aQarine L.Grasslands, oak-woodland, and oak-madrone forest.
-23-
Galium californicum H. & A.
Reported~by Cooper (1922) from chaparral and oak-madrone forest.
*Galium murale (L.) All.
~ Grasslands, chap~rral, and oak-woodland.Galium nuttallii Gray
Chaparral.
Galium trifidum L. var. subbiflorum Wieg.
Reported by both Springer (1935) and Moeur (1947) from "shady woods."Galium trif10rum Michx.
Reported by Moeur (1947) from '~oody thickets and openly forested slopes."*Sherardia arvensis L.
Thomas 4996 was collected at "Jasper Ridge. Small draw on south side of ridge."
73. Caprifoliaceae
)<Lonicera hispidu1a Dougl. ex Lindl.Oak-madrone forest.
~onicera involucrata (Richards) Banks ex S~rengStreambanks.
~Sambucus mexicana Presl ex DC.
Chaparral.
XSymphoricarpos albus (L.) Blake var. laevigatus (Fern.) BlakeChaparral, oak-woodland, and oak-madrone forest.
74. Dipsacaceae
~Dipsacus fullonum L.
Disturbed areas.
75. Valerianaceae
Plectritis ciliosa (Greene) Jeps. ssp insiqnis (Suksd.) MoreyGrasslands.
Plectritis macrocera T. & G.
Grasslands and openly wooded slopes.
76. Cucurbitaceae
x .M~ fabaceus (Naud.) Greene
Chaparral, oak-woodland, and oak-madrone forest.
77. Campanulaceae
*Triodanus biflora (R. & P.) Greene
Chaparral.
78. Compositae
Cichorieae
YAqOseris qrandiflora (Nutt.) Greene
~ Grasslands and openly wooded slopes.Hieracium albiflorum Hook.
~ Oak-madrone forest.Hypocha~ qlabra L.
Grasslands and openly wooded slopes.
-24-
*Lactuca saliqna L.
Thomas 8074 was found "Growing in serpentine rock crevice."
*Micxoseris douqlasii (DC.) Sch.-Bip. ssp. douqlasii
Grasslands and openly wooded slopes.
Microseris heterocarpa (Nutt.) Chambers
Reported by Moeur (1947) as "in fields and on open hillsides" (as Vropappus
~ lindleyi var. leucocarpus Jepson.)Picris echioidesL.
Disturbed areas.
~F2finesquia californica Nutt.
Reported by Springer (1935) from "openly wooded slopes."
Sonchus asper (L.) Hill
y Disturbed areas in moist grasslands and openly wooded slopes.f'Sonchus oleraceus L.
Disturbed areas.
Stephanomeria vir9ata Benth.Disturbed areas.
Taraxacum officinale Weber
Disturbed areas.
Astereae
Aster chilensis Nees
Oak-woodland and openly wooded slopes.
*A2.ill.radulinus Gray
Chaparral, occasionally on openly wooded slopes.
*Baccharis douqlasii DC.Streambanks.
*Baccharis pilularis DC. var. consanquinea (DC.) Kuntze
Chaparral and openly wooded slopes.
*Chaetopappa alsinoides (Greene) Keck
Grasslands and openly wooded slopes.~rigeron foliosus Nutt.
Grasslands.
g~iqeron philadelphicus L.
Reported by Springer (1935) from "open hillside near the bank of a drying stream."
*Grindelia camporum GreeneGrasslands.
Grindelia hirsutula H. & A.
Grasslands and openly wooded slopes.
*Lessinqia qermanorum Cham. var. tenuipes HowellGrasslands.
Lessinqia holo~ Greene vax. hololeucaGrasslands.
*SolidaQo ca1ifornica Nutt.
Openly wooded slopes.
rSOlidaQo occidentalis (nutt.) T. & G.Searsv ilIe Lake.
lnuleae
*Adenocaulon bicolor HookOak-madrone forest.
Anaphalis marqaritacea (L.) Gray
Reported by both Springer (1935) and Moeur (1947) from both open and openlywooded hillsides.
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*~ sparsiflora (Gray) Jeps.Grasslands.
*Gnaphalium californicum DC.
"Fairly cornmon in poor soils, in chaparral, and on dry ridges •••• " (Thomsa, 1961,p. 355).
Gnaphalium chilense Spreng.
)C Reported by Moeur (1947) from "dry, open hillside."Gnaphalium luteo-album L.
Reported by Moeur (1947) from "along the side of the road above the lake."
*Gnaphalium palustre Nutt.Searsville Lake.
Gnaphalium purpureum L.Grasslands.
~Micropus californicus F. & M.
~ Grasslands and openly wooded slopes.Psilocarphus tenellus Nutt.
Grasslands and openly wooded slopes.
Heliantheae
*Helianthella californica Gray
Grasslands and openly wooded slopes.
*Wyethia anQustifolia (DC.) Nutt.Grasslands.
Madieae
*Achyrachaena mollis SchauerGrasslands.
*Calycadenia multiqlandulosa DC. ssp. robusta Keck
Serpentine soil in the meadow.
*Hemizoni~ corymbosa (DC.) T. & G.Grasslands.
*Laqophylla ramosissima Nutt.Grasslands.
*Laxia hieraciodes (DC.) H. & A.Chaparral.
~LaYia platyqlossa (F. & M.) Gray ssp. campestris KeckGrasslands.
*Madia exiqua (Smith) GrayOak-woodland.
*Madia qracilis (Smith) Keck
Grasslands and openly wooded slopes.
Madia madioides (Nutt.) Greene
Reported by Moeur (1947) from "heavily wooded slopes.lIMadia sativa Molina
Disturbed areas.
Ambrosieae
>'Xanth ium strumar ium L.Searsville Lake.
Helenieae
Baeria chrysostoma F. & M. ssp. gracilis (DC.) FerrisGrasslands.
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)CEriophyllum confertiflorum (ne.) Gray
Chaparral.
*Eriophyllum lanatum (pursh) Forbes var. arachnoideum (Fisch. & Ave-Lall.) Jeps.Oak-woodland.
XHelenium puberulum DC.Streambanks.
Monolopia qracilens Gray
Reported by Springer (1935) from "near the edge of the chaparral above the lake,"
and by Moeur (1947) from "openly wooded hill-slopes."
Antl,1emideae
Achillea millefolium L. var. californica (Pollard) Jeps.Oak-woodland and oak-madrone forest.
YAnthemis cotula L.
Grasslands and disturbed areas.
*Artemisiabiennis Willd.
Searsville Lake.
*Artemisia californica Less.
Chaparral, often forming thick stands in which it is the dominant shrub.
Artemisia douqlasiana Bess.Streambanks.
Matricaria matricariodes (Less.) PorterDisturbed areas.
Senec ioneae
*Arnica discoidea Benth.
Mason (May 18, 1921) was collected "Near redwood area, Jasper Ridge."*Senecio aronicoides DC.
Chaparral and openly wooded slopes.
~enecio breweri DavyReported by Moeur (1947) from "openly wooded areas."
*Senecio mikanioides Otto
Streambanks.
~Senecio vulqari~ L.Disturbed areas.
Cynareae
*Carduus ~iflorus CurtisDisturbed areas.
Centaurea calcitrapa L.Disturbed areas.
~ Centaurea me Iitens is L.
Disturbed areas in grasslands and along the roads.Centaurea sol~titialis L.
Disturbed areas.
Cirs~ brevistvlum Cronq.
Reported by Springer from "a place kept moist by the overflow of a watering
trough." (as g. edule Nutt.).Cirsium occidentale (Nutt.) Jeps.
X Reported by Maeur (1947) from "dry, openly wooded slopes."Cirsium proteanum Howell
Reported by Springer (1935) from "dry, more openly wooded slopes." (as g.
occidental~ var. venustum Jepson).
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K~irsium vulQar~ (Savi) TenoreDisturbed areas.
Si)ybu~ m~riAnum (t.) Gaertn.Disturbed areas.
As you can see, this list of the vascular plants of Jasper Ridge is
not complete. Nor are there specimens in the Dudley Herbarium represen-:jLng
each of the t,.:lxalisted. Theya~e many reasons for t his, mainly historical.
For some years I have been slouly completing the list and getting specima,s.
A separate herbarium case housed the plants from Jasper Ridge. This is available
for use, but only after receiving permission to do so. If you come across
plants that you do not think are in the list,·please communicate this to me.
We can then get a good sample for a permanent herbarium specimen.
I ~nllbe glad to help with identification of specimens, but there is a
limi t to my time. If yon Hant help 1·r'.L th identification, l'lease be sure that
you have enough plant material so that :-t can be identified. Sterile grassblades - ~o thankyouo
John H. Thomas
Harch 26, 1971
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ADDITIONS TO THE FLORA OF JASPER RIDGE
2. Polypodiaceae
*Drvopteris ar~uta (Kaulf.) lJatt.
PJDOng redwoods
*Polvpodium californicum Kaulf.Rock crevices and on rocks among mosses in shade.
3. potamogetonaceae
*Potamo~eton illinoensis MorongEdge of Searsville Lake near bridge.
4. Alismataceae
*Echinodorus berteroi (Spreng.) Fassett
Dry lake bed at Searsville Dam.
5. Gramineae
*Festuca eastwoodae PiperOpen oak woodlands.
*.f2! howellii V. & S.Between Searsville Dam and redwood area.
*Scribneria bolanderi (Thurb.) Hack.Chaparral.
*Calama2rostis koelerioides VaseyOak woodland.
*Stipa lepida Hitchc.Grasslands.
*Phalaris tuberosa L. var. stenoptera (Hack.) Hitchc.
Along San Francisquito Creek below Searsville Dam.
7 • Juncaceae
*Juncus bufonius L.
Grassy meadows in oak woodland.
11. Amaryllldaceae
*Brodiaea con~esta Sm.Oak woodland.
13 • Orchidaceae
*Corallorhiza maculata Raf.Without specific locality.
19. Urticaceae
*Urtica urens L.
In shade at base of sandstone outcroppings below Searsville Dam.
2.
22. Chenopodiaeeae
*~opodium !E!?!'.2.:~~ L. var. ambrosioidesBelow Searsville Dam.
22a. Amaranthaceae
*Amaranthus Albus L.
Dry lake bed near Searsville Dam.
24. Caryophyllaceae
*Sa~ina apetala Ard. var. barbata Fenzl ex Ledeb.Edge of road in oak woodland.
25. Ranunculaeeae
*Ranuneulus hebecarpus H. & A.
Moist, shaded slopes near Searsville Lake.
29. Cruciferae
*Brassiea aenieulata (Desf.) BallDisturbed, grassy slope above Searsville Lake.
37.• Fabaceae
*L!thyrus !atifolius L.Along San Francisquito Creek below Searsville Dam.
*Lupinus latifolius Agardh var. latifoliusOak woodlands.
*Trifolium amplectens T. & G.Open serpentine grasslands.
*Trifolium microdon H. & A.Oak woodlands.
54. Onagraeeae
*Boisduvalia stricta (Gray) Greene
Along road in oak woodland.
*EpUobium minutum Lind!. ex Hook.Chaparral.
54a. Haloragidaeeae
*Mvriophvllum brasilienee Camb.Mud at edge of Searsville Lake near bridge.
55. Umbel1iferae
*Scandix pectin-veneris L.Oak woodlands.
3.
6la. Asclepiadaceae
*Asclepias fascicularis Decne.
Edge of grassland bordering chaparral at Westridge end of Ridge.
64. B;ydrophyllaceae
*Phacelia rattanii Gray
Edge of chaparral.
65. Boraginaceae
*Mvosotis latifolia Poir.Below Searsville Dam.
69. Scrophulariaceae
*Kickxia spuria (L.) Dumort.
Along San Francisquito Creek near Searsville Dam.
*Vero.nica persica Poir.Grassy slope near Searsville Dam.
78. Compositae
*Crepis vesicaria L. ssp. taraxacifolia (Thuill.) TheIl.Oak 't<loodland.
*Convza canadensis (L.) Cronq.Edge of road above Searsville Lake.
*G~aphalium beneolens Dav.
Edge of lake at Searsville Dam.
*Rigiopappus leptocladus GrayChaparral.
*~~ethia glabra GrayOak woodland.
Compiled by John H. Thomas" April 26. 1965
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