Pteris plumbea Christ

Family

Pteridaceae, subfamily Pteridoideae

Nomenclature

Pteris plumbea Christ, Not. Syst. 1: 49. 1909; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 150. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 82. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 255. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 130. 2000.

Description

Rhizome short, erect; scales linear, up to 1.2 cm long, deep brown, more or less crisped. Stipes stramineous, scaly at base, puberulous upwards, 15–20 cm long in sterile frond, 30–40 cm in fertile one. Laminae pinnate, oblong-ovate in outline, 15–30 cm; lateral pinnae simple, forked or trifoliolate, usually more branched in fertile ones, narrowly cuneate at base, caudately acuminate at apex, sharply and minutely serrate at margin of sterile pinnae, up to 13 by 2.5 cm in sterile pinnae, up to 18 by 1.2 cm in fertile pinnae, shortly stalked or sessile in upper pinnae, chartaceous, deep green, glabrous; veins visible on lower surface. Sori continuous from base nearly to apex of pinnae; indusia thin but firm , brown.

Distribution in Thailand

NORTH-EASTERN: Loei; SOUTH-EASTERN: Chon Buri, Chanthaburi; PENINSULAR: Surat Thani, Satun.

Distribution in Cambodia

Pursat

Wider Distribution

China and Indochina.

Ecology

On rather dry mountain slopes in mixed forests at medium altitudes.

Proposed IUCN Conservation Assessment

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

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.