Trichomanes schmidianum

Crepidomanes schmidianum (Zenker ex Taschner) K. Iwats. (syn: Crepidomanes titibuense (H.Ito) Nakaike; Lacosteopsis schmidiana (Zenker ex Taschner) Panigrahi &  Sarn. Singh; Lacosteopsis titibuensis (H. Itô) Nakaike (ambiguous synonym); Lacosteopsis titibuensis (H. Itô) Panigrahi & Sarn.Singh (ambiguous synonym); Trichomanes cupressifolium Hayata; Trichomanes digitatum Bedd.; Trichomanes longifrons Nakai; Trichomanes pyxidiferum L.; Trichomanes pyxidiferum var. limbatum Wall. ex Bedd.; Trichomanes pyxidiferum var. schmidianum (Zenker ex Taschner) C.Chr.;  Trichomanes schmidianum Zenker ex Taschner; Trichomanes titibuense (H. Itô) C. V. Morton (ambiguous synonym); Trichomanes titibuense (H. Itô) S. K. Wu (ambiguous synonym); Vandenboschia schmidiana (Zenker ex Taschner) Copel.; Vandenboschia titibuensis H. Itô);

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Tropical & Subtropical Asia: Assam, Bangladesh, China South-Central, China Southeast, East Himalaya, India, Japan, Myanmar, Nepal, Philippines, Sulawesi, Sumatera, Taiwan, Tibet as per POWO (Trichomanes schmidianum Zenker ex Taschner);
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China (Guangxi), Tibet, Bhutan, India (Arunachal Pradesh, Kerala, Meghalaya, Sikkim, Tamil Nadu, Uttarakhand (Garhwal), West Bengal), Japan, Nepal, Myanmar [Burma], Philippines, Sulawesi, Sumatra as per Catalogue of Life;

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Flora of CRF_3 : 9 posts by 5 authors. Attachments (2)

Can any one help me to identify this filmy fern (Hymenophyllaceae).

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Can it be some Davalia, Rabit’s Foot Fern?

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Hymenophyllum sps of Hymenophyllaceace.

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Thanks a lot …, for correcting me. I think I have seen this in wild in Mussorie.

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I also think Hymenophyllum sps

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Looks like Trichomanes schmidianum with those trumpet-like involucres – but you didn’t say what State it was from.

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Er, modern Assam as in Assam State, which I’d think too low in altitude, perhaps?  Or erstwhile, historical “Assam” sens. lat. – in which case, which Indian State?  I could probably know from the locality.

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References:
POWO  Catalogue of Life  The Plant List Ver.1.1 (unresolved)  IPNI  Flora of China