Botrychium lanuginosum

Japanobotrychum lanuginosum (Wall. ex Hook. & Grev.) M.Nishida ex Tagawa, J. Jap. Bot. 33: 201, 1958. (syn: Botrychium arisanense (Masam.) Masam.; Botrychium decurrens Ching; Botrychium lanuginosum Wall.; Botrychium lanuginosum var. leptostachyum (Hayata) Nakai; Botrychium lanuginosum var. nanum Alderw.; Botrychium lanuginosum var. nepalense (Nishida) Nair & Dixit; Botrychium leptostachyum Hayata; Botrychium modestum Ching; Botrychium parvum Ching; Botrychium virginianum var. lanuginosum (Wall. ex Hook. & Grev.) Bedd.; Botrychium virginianum var. lanuginosum (Wall. ex Hook. & Grev.) T.Moore; Botrychium yunnanense Ching; Botrypus decurrens (Ching) Ching & H.S.Kung; Botrypus lanuginosus (Wall. ex Hook. & Grev.) Holub; Botrypus lanuginosus (Wall. ex Hook. & Grev.) Y.X.Lin; Botrypus lanuginosus var. nepalensis (Nishida); Botrypus parvus (Ching) Holtt.; Botrypus tibeticus Ching; Botrypus yunnanensis (Ching) Y.X.Lin; Botrypus yunnanensis (Ching) Z.R.He; Japanobotrychum arisanense Masam.; Japanobotrychum lanuginosum var. nepalense Nishida; Osmundopteris lanuginosa (Wall. ex Hook. & Grev.) Nishida);
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Tropical & Subtropical Asia: Assam, China South-Central, China Southeast, East Himalaya, India, Jawa, Lesser Sunda Is., Myanmar, Nepal, New Guinea, Philippines, Sri Lanka, Sulawesi, Sumatera, Taiwan, Thailand, Tibet, Vietnam, West Himalaya as per POWO (Botrychium lanuginosum Wall. ex Hook. & Grev.);

China (Guangxi, Guizhou, Hunan, Sichuan, Yunnan), Taiwan, Tibet, Philippines, India (Arunachal Pradesh, Chhattisgarh, Himachal Pradesh, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Meghalaya, Nagaland, Sikkim, Tamil Nadu, Uttarakhand, West Bengal, Rajasthan), Nepal, Sri Lanka, Sumatra, Java, Lesser Sunda Isl. (Lombok, Bali, Alor), N-Thailand, Vietnam, Bhutan, Myanmar [Burma], New Guinea, Sulawesi as per Catalogue of Life;

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Terrestrial herbs with erect, densely hairy subterranean, fleshy, rhizome, 1-1.5 x 2 cm. Fronds 30-50 x 25-30 cm, divided into sterile and fertile segments; stipe 18-25 cm long, pubescent. Sterile lamina 25-30 x 25-30 cm, triforked, tripinnate; primary pinnae 20 x 18-20 cm, deltoid in outline; secondary pinnae 12-13 x 3 cm, lanceolate in outline; tertiary pinnae 3.5 x 2 cm, ovate acute, again lobed; veins forked once; fertile lobe 25-30 x 2.5-3 cm, arising from the branching of the sterile lobes, quadripinnate, stalk 15-20 cm long. Sporangia globose, 2 mm in diameter, opened by a vertical slit. Spores 40 x 30 µm, oblongoid or ellipsoid, tuberculate.
Evergreen and shola forests.
(Attributions- K. P. Rajesh as per India Biodiversity Portal)
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Botrychium Fern SN19420 : 3 posts by 2 authors. Attachments (1) – 4 mb.
Wild fern from Western Ghats Tamilnadu.
Botrychium lanuginosum Wall.

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Yes, and you mean B. lanuginosum Wall. ex Hook. & grev. – as you can see in any modern Botanical literature. Wallich himself did not validate the great majority of his names.

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References:
POWO  Catalogue of Life  The Plant List Ver.1.1  Tropicos  IPNI  Flora of China  FOC illustration  FOC illustration 2  India Biodiversity Portal  Bhutan Biodiversity Portal  Ferns of Thailand, Laos and Cambodia  Life-History of Botrychium lanuginosum