Lepisorus sublinearis (Bak. ex Takeda) Ching, Bull. Fan Mem. Inst. Biol. 4(3): 78 1933. (syn: Lepisorus cespitosus Y.X.Lin; Lepisorus lancifolius Ching; Pleopeltis sublinearis (Baker ex Takeda) Tagawa & K.Iwats.; Polypodium sublineare Baker ex Takeda);
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Himalaya to China (Yunnan) and Indo-China: Assam, China South-Central, East Himalaya, Laos, Myanmar, Nepal, Thailand, Vietnam, West Himalaya as per POWO;
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MS,April,2022/03 Lepisorus sp. for id.: 1 high res. image.
Location : Mualpheng, Mizoram
Having said that, I can probably take a wild guess that this is probably L. sublinearis – especially if fronds mostly arise together and the specimen takes a long time to dry. But please don’t take that as an identification. Only, it MIGHT be sublinearis.
Sorry ! Only this image, sir.
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References:
POWO Catalogue of Life The Plant List Ver.1.1 Tropicos IPNI GBIF (High resolution specimens) Flora of China FOC illustration Plant illustrations PteridoPortal