Northeastern Asian Flora
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Cryptogramma stelleri (S.G.Gmel.) Prantl   (redirected from: Allosorus gracilis (Michx.) C.Presl)
Family: Pteridaceae
[Allosorus gracilis (Michx.) C.Presl, moreAllosorus stelleri (S.G.Gmel.) Rupr., Cheilanthes gracilis (Michx.) Kaulf., Pellaea gracilis (Michx.) Hook., Pellaea stelleri (S.G.Gmel.) Baker, Pteris gracilis Michx., Pteris stelleri S.G.Gmel.]
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  • Japan Flora
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Japan Flora: Rhizomes creeping, very slender, about 1.5 mm. across, sparsely leafy and scaly; scales broadly lanceolate, 1-2 mm. long, fuga­cious, pale brown; fronds delicate, glabrous; stipes 3-10 cm. long, 0.5-0.7 mm. across, light brown, slightly lustrous, smooth, sparsely scaly at base; blades membranous, oblong- ovate or ovate, 3-7 cm. long, 2-3 cm. wide, 1- or 2-pinnate; pinnae simple or ternate, very short-petiolulate to subsessile; sterile pinnules ovate to obovate or flabellate, 4-7 mm. long, rounded to crenate-toothed on upper half, broadly cuneate and entire on lower portion; fertile lobes broadly lanceolate, 5-12 mm. long, 3-4 mm. wide, crenate to subentire. July-Sept Wet shaded rocks, alpine regions.

Honshu (centr. distr.); very rare. Siberia, the Himalayas, and N. America.

 

Cryptogramma stelleri
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National University and Korea National Arboretum of Korea Forest Service.
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