Davallodes pulchra (D.Don) M.Kato & Tsutsumi

Family

Davalliaceae

Nomenclature

Davallodes pulchra (D.Don) M.Kato & Tsutsumi, Acta Phytotax. Geobot. 59: 13. 2008. – Davallia pulchra D.Don, Prodr. Fl. Nepal.: 11. 1825. – Leucostegia pulchra (D.Don) J.Sm., J. Bot. 1: 426. 1842; Bedd., Handb. Ferns Brit. India: 52, f. 25. 1883; C.Chr., Contr. U.S. Natl. Herb. 26: 332, pl. 25. 1931; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 114. 1939. – Araiostegia pulchra (D.Don) Copel., Philipp. J. Sci. 34: 241. 1927; Ching, Fl. Reipubl. Popularis Sin. 2: 288, pl. 21, f. 9–10. 1959; Holttum, Dansk Bot. Ark. 20: 25. 1961; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 77. 1967; Tagawa & K.Iwats., Acta Phytotax. Geobot. 24: 180. 1970; Tagawa & K.Iwats., Fl. Thailand 3: 154. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 169, 232. 2000.

Description

Rhizome long creeping, about 5 mm diam.; scales dense, oblong, round at both edges, entire or undulate at margin, pale brown or a little darker in central attached portion, thin. Stipes jointed to phyllopodia 1 cm high, stramineous, terete, sparsely scaly on lower part, up to 20 cm long. Laminae oblong to oblong-subtriangular, tri- to quadripinnate, 15–30 by 10–25 cm; all pinnae anadromous; free lateral pinnae about 10–20 pairs, lower ones the largest, basal ones asymmetrically oblong-subtriangular, up to 15 by 8 cm, stalked; pinnules stalked, oblong, round to moderately acute at apex, broadly cuneate anteriorly and dimidiate posteriorly at base; secondary pinnules sessile, cuneate at base; larger ultimate segments with a few lobes, sessile, round to moderately acute at apex, cuneate at base, lobes about 0.5 mm broad, acute at apex; herbaceous to softly papyraceous, glabrous, yellow green to pale green. Sori terminal at veinlets, one for each lobe; indusia small, usually broader than long, round at apex, entire , membranous.

Distribution in Thailand

NORTHERN: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Tak; NORTH-EASTERN: Loei; SOUTH-WESTERN: Kanchanaburi.

Distribution in Laos

Champasak, Salavan.

Wider Distribution

Himalayas to Yunnan and Indochina.

Ecology

On mossy tree trunks or rocks in dense evergreen forests at 900–2000 m alt.

Similar species

Davallia perdurans Christ

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Middleton et al. 4961, Mae Hong Son, Ban Hua Ha (E); Middleton et al. 4465, Chiang Mai, Doi Suthep-Doi Pui National Park (E).

Voucher specimens - Laos

Thorel 2504, Champasak (P); Poilane 16123, Salavan, Pou Set (P)

Habit

Habit

Rhizome

Rhizome

Growing tip of rhizome

Growing tip of rhizome

Frond

Frond

Lower surface of lamina

Lower surface of lamina

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.