Pteris multifida Poir.
Pteridaceae, subfamily Pteridoideae
Pteris multifida Poir., Encycl. (Lamarck). 5: 714. 1804; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 148. 1940; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 175. 1969; Tagawa & K.Iwats., Fl. Thailand 3: 254. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 130. 2000.
Rhizome short, creeping, bearing small blackish scales. Stipes stramineous, or darker near base, 4–15 cm long. Laminae bipinnate with long rarely forked pinnules, dimorphic; sterile frond less divided, rachis winged to form the same construction as segments; segments up to 1 cm broad, dentate at margin; fertile frond up to 60 cm long, with stipe and lamina almost equal; segments about 5 mm broad, simple or rarely forked, decurrent at base to form distinct wings on rachis but not on stipe. Sori linear, along the margin of lobes nearly throughout.
Distribution in Thailand
Indochina, China, Japan and rather rarely in Ryukyus and Taiwan, once from Singapore.
Only once collected on stone-walls in Bangkok in 1921.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread outside of Thailand and not under any known threat. Its current status within Thailand is uncertain.
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