Thelypteris tenera

Thelypteris tenera (Roxb.) C.V.Morton ex Fraser-Jenk., Taxon. Revis. Indian Subcontinental Pteridophytes: 418 (2008) as per POWO;
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Trigonospora ciliata (Wall. ex Benth.) Holtt., Blumea 19(1): 29 1971 (syn: Aspidium ciliatum Wall.; Cyclosorus ciliatus (Wall. ex Benth.) Panigrahi; Dryopteris calcarata var. sericea (J. Scott ex Bedd.) C. Chr.; Dryopteris ciliata (Benth.) C. Chr. ex Wu & al.; Dryopteris pinnata Copel.; Lastrea calcarata var. ciliata (Wall. ex Benth.) Bedd.; Lastrea calcarata var. sericea (Scott ex Bedd.) Bedd.; Lastrea ciliata Hook.; Lastrea pinnata (Copel.) Copel.; Lastrea sericea Schott; Nephrodium ciliatum (Wall. ex Benth.) C. B. Cl.; Polypodium tenerum Roxb.; Pseudocyclosorus ciliatus (Wall. ex Benth.) Ching; Thelypteris ciliata (Wall. ex Benth.) Ching; Thelypteris pinnata (Copel.) Ching; Thelypteris sericea (J. Scott ex Bedd.) C. Reed; Thelypteris tenera (Roxb.) C. V. Morton ex Fraser-Jenk.;  Trigonospora ciliata var. angustiloba Holtt.; Trigonospora sericea (J. Scott ex Bedd.) Holtt.);

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Indian Subcontinent to S. China and Sumatera: Assam, Bangladesh, China South-Central, China Southeast, East Himalaya, Hainan, India, Laos, Malaya, Myanmar, Nepal, Nicobar Is., Sri Lanka, Sumatera, Thailand, Vietnam, West Himalaya as per POWO;
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ANMAY29/37 Fern for ID : 7 posts by 5 authors. Attachments (12)

Date: 10th May 2015
Place: Agumbe, Karnataka
Habitat: Riverside

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Looks like Athyrium filix-femina,

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Thelypteridaceae. Definitely not Athyrium

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I do think it important that people attempting to answer questions on Indian ferns must be properly familiar both with the Indian flora and with the species and genera themselves before writing. One should be aware of ones own lacunae in knowledge and be more circumspect before attempting to answer with rough guesses, which can only end up confusing people.
In this case, first Athyrium filix-femina does not occur in India at all. Secondly it is in quite the wrong family, Woodsiaceae. As I answered the poster of the photos recently, this plant is in Thelypteridaceae, and in sect. Trigonospora. It is actually Thelypteris tenera (syn. T. ciliata), and is not at all similar to Athyrium.

 

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References:
POWO Catalogue of Life The Plant List Ver.1.1  Tropicos