Northeastern Asian Flora
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Pyrrosia davidii (Baker) Ching   (redirected from: Niphobolus davidii Giesenh.)
Family: Polypodiaceae
[Cyclophorus matsudai Hayata, moreCyclophorus pekinensis C.Chr., Cyclophorus subfissus Hayata, Cyclophorus transmorissonensis Hayata, Niphobolus davidii Giesenh., Niphobolus gralla Giesenh., Polypodium davidii Franch., Pyrrosia gralla (Giesenh.) Ching, Pyrrosia matsudae (Hayata) Tagawa, Pyrrosia nudicaulis Ching, Pyrrosia pekinensis (C.Chr.) Ching, Pyrrosia transmorissonensis (Hayata) Ching]
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  • Japan Flora
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Japan Flora: Rhizomes creep­ing, 1.5-2 mm. across, with close stipes, densely scaly, the scales appressed, about 2 mm. long, deltoid-lanceolate, cau- dately long-attenuate, dark brown at the center, gray-brown and thinner toward margin, denticulate; fronds 15-25 cm. long, firm, the stipes 5-8 cm. long, sparsely stellate-pilose, scaly at base; scales linear, membranous, pale brown, gradu­ally caudate-acuminate, 3-4 mm. longļ¼› blades linear-lanceolate or broadly linear, 8-15 cm. long, 5-15 mm. wide, simple, en­tire, narroweed to the obtuse apex, gradually attenuate to the stipe, sparingly stellate-pilose but soon glabrate above, densely cinereous-brown stellate hairy, the costa slender, slightly ele­vated beneath; sori somewhat scattered, not confluent, round. Rocks.

Honshu (Mikawa, Totomi, and Sagami Prov.); very rare.  n. China.

Pyrrosia davidii
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National University and Korea National Arboretum of Korea Forest Service.
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