Pteris linearis Poir.


Pteridaceae, subfamily Pteridoideae


Pteris linearis Poir. in Lam., Encycl. (Lamarck) 5: 723, pl. 43. 1804; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 158. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 80. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 238. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 129. 2000.


Similar to Pteris biaurita , differs in: basal pair of veinlets forked, the basiscopic branches meeting those of the opposite groups at bottom of sinus forming triangular loop, but seldom actually anastomosing .

Distribution in Thailand

NORTHERN: Chiang Mai; SOUTH-WESTERN: Kanchanaburi.

Distribution in Laos


Wider Distribution

E Africa and throughout tropical Asia, but accurate area is not certain.


On mountain slopes in lower montane forests in limestone regions or in light shade at about 800–1800 m alt.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is widespread and not under any known threat.

Voucher specimens - Thailand

Middleton et al. 5052, Chiang Mai, Doi Ang Khang (E).

Voucher specimens - Laos

Delacour s.n., Khammouane, Nape (P).

Lower surface of pinna with galls

Lower surface of pinna with galls

Upper surface of pinna with galls

Upper surface of pinna with galls

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