10/30/2011 1 Pteridophyte reproduction Liverworts Hornworts Mosses To be cont. Modified 17-13 (19-9) Embryophytes “Bryophytes” Rhynia (Fossil) Lycopodiophyta Pteridophyta Transition to land megaphylls microphylls Microphylls • One vascular trace – No branching vasculature in leaf – Forms from protostele http://28.media.tumblr.com/tumblr_lgpco8M9Ie1 qa2aauo1_500.jpg
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Pteridophyte reproduction - Christian Brothers …facstaff.cbu.edu/~jmoore25/BotanyPPT/Pteridophyte...10/30/2011 1 Pteridophyte reproduction Liverworts Hornworts Mosses To be cont.
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10/30/2011
1
Pteridophyte reproduction
Live
rwor
tsH
ornw
orts
Mos
ses
To b
e co
nt.
Modified 17-13 (19-9) Embryophytes
“Bryophytes”
Rhy
nia
(Fos
sil)
Lyco
podi
ophy
ta
Pteridophyta
Transition to land
megaphylls
microphylls
Microphylls• One vascular trace
– No branching vasculature in leaf– Forms from protostele
p p ythem. These sporophylls are often called sporangiophoreson Equisetum.
Equisetum: strobili
10/30/2011
10
Live
rwor
tsH
ornw
orts
Mos
ses
To b
e co
nt.
Embryophytes
“Bryophytes”R
hyni
a (F
ossi
l)Ly
copo
diop
hyta
Pteridophytes
Transition to land
megaphylls
Eusporangiate ferns: brief overview
--megaphylls--protosteles--homosporoushomosporous--eusporangia--underground, non-photosynthetic gametophyte--includes Psilotales and Ophioglossales--7 genera, about 70 species
--all aquatic--megaphylls--siphonosteles--heterosporousp--leptosporangia--endosporic gametophyte--includes Marsileales and Salviniales--5 genera, about 70 species
--megaphylls--siphonosteles (mostly) – few with eusteles--homosporoushomosporous--leptosporangia--above-ground, photosynthetic gametophyte--about 320 genera, 10,500 species