Elaphoglossum subellipticum Rosenst.
Elaphoglossum subellipticum Rosenst., Hedwigia 56: 348. 1915; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 89. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 306, f. 25.4–25.6. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 187. 2000.
Rhizome short, densely scaly throughout; scales brown or light brown, shining, linear, up to 10 by 1 mm, with irregular teeth or projections at margin. Sterile frond of two sizes: larger ones a few on a plant; stipe about 10 cm long, stramineous or darker, densely scaly at base, sparsely so on the remainder with narrow dark scales; lamina elliptic, gradually narrowing towards both ends, acute at apex, the base decurrent to very narrow wings on the upper part of stipe, about 25 by 5.5–7 cm; midrib distinctly raised on lower surface, veins forked, distinct on both surfaces, the apex ending inside the narrow cartilaginous margin; coriaceous, pure green, very sparsely scaly on lower surface; smaller sterile frond many on a plant; stipe 3–6 cm long, winged on upper part; lamina oblong, acute at apex, round at base, 6–15 by 2.5–4 cm. Fertile frond: lower than the larger sterile fronds but higher than the smaller sterile ones; stipe about 10 cm long, winged at uppermost part; lamina broadest at middle, gradually narrowing towards both ends, up to 12 by 2.5 cm.
Distribution in Thailand
Taiwan and Sumatra.
On mossy rocks or on tree trunks in dense evergreen forests at l000–l400 m alt.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread and not under any known threat.
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