Lepisorus scolopendrium

Lepisorus scolopendrium (Ching) Mehra & Bir, Res. Bull. Punjab Univ., New Ser., Sci. 15: 168 (1964) (syn: Lepisorus excavatus var. himalayensis Bir & Trikha ; Lepisorus excavatus var. mortonianus Bir & Trikha ; Lepisorus himalayensis (Bir & Trikha) Khullar & Pangtey ; Lepisorus kumaonensis Kholia, Bhakuni, R.Punetha & Bankoti ; Lepisorus mortonianus (Bir & Trikha) Khullar ; Lepisorus scolopendrium var. himalayensis (Bir & Trikha) Pangtey & Punetha ; Lepisorus virescens Ching & S.K.Wu ; Pleopeltis excavata var. himalayensis (Bir & Trikha) Benl ; Pleopeltis excavata var. mortonianus (Bir & Trikha) Benl ; Pleopeltis himalayensis (Bir & Trikha) Á.Löve & D.Löve ; Pleopeltis mortonianus (Bir & Trikha) Á.Löve & D.Löve; Lepisorus excavatus var. scolopendrium Ching ; Pleopeltis scolopendrium (Ching) Alston & Bonner ; Polypodium scolopendrium Buch.-Ham. ex D.Don );

Himalaya to S. China and Indo-China: Assam, China South-Central, East Himalaya, Hainan, Laos, Myanmar, Nepal, Thailand, Tibet, West Himalaya as per POWO;
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Is it a Fern, Uttarakhand (180609SCS1) – indiantreepix | Google Groups:

I think this is pteridophyte Pleopeltis

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Pteridophyte pleopeltis shown at flickr.com/photos/alan_cressler/2253529292/ is quite different from the one I had posted.

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The pteridophytes are vascular plants (plants with xylem and phloem) that neither flower nor produce seeds, hence they are called vascular cryptogams. Instead, they reproduce and disperse only via spores as per link: http://en.wikipedia.org/wiki/Pteridophyte
While Pleopeltis is the genus, which includes many species, including Pleopeltis polypodioides as stated in your link, as per link: http://en.wikipedia.org/wiki/Pleopeltis

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Did you take a close-up pix of the yellow spots on the rocks in the background in both the pix. Appears to be rust/fungus. ID anyone.

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References:
POWO  Catalogue of Life  GBIF (High resolution specimens) Flora of China  FOC illustration Research Gate illustration  fernsoftheworld