Pteris bella Tagawa

Family

Pteridaceae, subfamily Pteridoideae

Nomenclature

Pteris bella Tagawa, Acta Phytotax. Geobot. 8: 166. 1939; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 81. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 250, f. 19.3. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 126. 2000.

Description

Rhizome erect or ascending, bearing a tuft of fronds at apex, densely scaly; scales up to 8 by 0.8 mm, concolorously brown, entire. Stipes deep purplish, shining, scaly at base, glabrescent upwards, 20–55 cm long. Laminae oblong with acute apex, deeply bipinnatisect, 20–30 by 15–25 cm; rachis shining purple, glabrescent; lateral pinnae 5 or 6 pairs, opposite, lanceolate, caudately acuminate at apex, slightly narrowing towards subtruncate sessile base, up to 12 by 2.5 cm; costa stramineous, glabrescent; pinnules oblique, rounded at apex, entire at margin, adnate at base and decurrent to the costa with wings less than 0.5 mm broad, up to 13 by 4 mm, softly papyraceous, green; veins forked, raised beneath. Sori marginal, usually less than 7 mm long; indusia pale brown, thin.

Distribution in Thailand

NORTHERN: Mae Hong Son, Chiang Mai; NORTH-EASTERN: Loei; SOUTH-WESTERN: Kanchanaburi; PENINSULAR: Nakhon Si Thammarat.

Wider Distribution

Taiwan.

Ecology

Terrestrial, usually on mountain slopes in lower montane forests at 1100–2200 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. 4896, Chiang Mai, Doi Inthanon National Park (E).

Habit

Habit

Frond

Frond

Spines on coast above

Spines on coast above

Pinnules with marginal sori

Pinnules with marginal 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.