Spore Germination and Vegetative Stages of the Gametophytes of Hymenophyllum and Trichomanes

The sporophyte‐less filmy fern of eastern North America Trichomanes intricatum (Hymenophyllaceae) has the chloroplast genome of an Asian species

“…5). The morphology of T. intricatum also matches that described for species of Crepidomanes (Stokey, 1940; Yoroi, 1972).…”

Reticulate evolution in the Crepidomanes minutum species complex (Hymenophyllaceae)

“…Rhizoids were observed but no sexual organs were present. Intrasporangial germination has been reported in Hymenophyllum but is less common in trichomanoid species ( Stokey, 1940 ).…”

Spore morphology and wall ultrastructure of Hymenophyllaceae Link (Pteridophyta) from north-west Argentina

“…Our studies show that spore morphology may also be useful in taxonomic separation of the genera. Spores of the Hymenophyllaceae have chlorophyll and germinate quickly, sometimes within the sporangia before the wall splits (Stokey, 1940) and are thus usually multicellular. In our study we also found multicellular spores that had germinated within the sporangium.…”