Pteris tripartita Sw.

Family

Pteridaceae, subfamily Pteridoideae

Nomenclature

Pteris tripartita Sw., Schrad. J. Bot. 1800(2): 67. 1801; Bedd., Suppl. Ferns Brit. Ind.: 25. 1892; Christ, Bot. Tidsskr. 24: 107. 1901; C.Chr., Bot. Tidsskr. 32: 348. 1916; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 161. 1940; Holttum, Rev. Fl. Malaya ed. 1, 2: 408, f. 238. 1955 [‘1954’]; Tagawa & K.Iwats., Fl. Thailand 3: 237. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 132. 2000; Newman et al., Checkl. Vasc. Pl. Lao PDR: 31. 2007.

Pteris wallichiana auct. non J.Agardh: Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 55. 1968.

Description

Similar to Pteris wallichiana but distinctly different in venation: reticulation more copious forming one more row of areoles outside costal ones and a row of costular areoles as well; ultimate segments shorter, more sharply falcate, rounded at apex; stipe usually stramineous throughout or pale castaneous .

Distribution in Thailand

EASTERN: Nakhon Ratchasima; SOUTH-EASTERN: Trat; PENINSULAR: Surat Thani, Phangnga,Yala.

Distribution in Laos

Unspecified.

Wider Distribution

Very widely distributed in the tropics of the Old World, southeast to Australia and Polynesia.

Ecology

Terrestrial, sometimes on calcareous gravelly slopes, at low altitudes.

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Middleton et al. 4309, Surat Thani, Khlong Saeng Wildlife Sanctuary (E).

Fronds

Fronds

Sori

Sori

Site hosted by the Royal Botanic Garden Edinburgh. Content managed by Stuart Lindsay, Gardens by the Bay, Singapore and David Middleton, Singapore Botanic Gardens. Last updated 16 November 2016.