Page 1 Supplementary File S2 Stem sections of various Thesiaceae Lacomucinaea lineata (DLN 4088)Page 2 Osyridicarpos schimperianus (DLN 4110)Page 3 Thesium carinatum (DLN 4094)Page 4 Thesium cf. frisea (DLN 4105)Page 5 Thesium fragile (DLN 4102)Page 6 Thesium nudicaule (DLN 4098)Page 7 Thesium ramosum (DLN 5558)Page 8 Thesium strictum (DLN 4093)Page 9 Thesium spicatum (DLN 4095)