| Cryptogramma stelleri (S.G. Gmel.) Prantl |
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Family | Cryptogrammaceae — APG family: Pteridaceae |
Synonyms | Pellaea stelleri (S. G. Gmel.) Baker, Allosurus gracilis (Michx.) Presl, Pteris stelleri S. G. Gmel., Pteris gracilis Michx., Allosurus stelleri (S. G. Gmel.) Rupr. |
Description | Up to 15 cm tall; rhizome very slender, cordlike, scaly, and pilose; fronds scat- tered, glabrous, fertile ones longer than sterile ones, pinnae few, thin; fertile frond with long stipe, and remote pinnae; ultimate segments linear-oblong, entirely or slightly crenulated; sori marginal, covered by revolute margins. |
Ecology | Crevices in calcareous rocks in shaded localities with dripping water. Usually very rare and scattered. Described from Siberia. |