Drynaria parishii (Bedd.) Bedd.

Etymology

Named after Charles Samuel Pollock Parish (1822 - 1897) who collected the type specimen of Drynaria parishii in Burma.

Family

Polypodiaceae

Nomenclature

Drynaria parishii (Bedd.) Bedd., Suppl. Ferns S. Ind.: 24. 1876; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 520. 1941; Tagawa, J. Jap. Bot. 38: 329. 1963; Tagawa & K.Iwats., Acta Phytotax. Geobot. 24: 175. 1970; Tagawa & K.Iwats., Fl. Thailand 3: 548, f. 55.2 & 55.3. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 269. 2000; Newman et al., Checkl. Vasc. Pl. Lao PDR: 29. 2007. – Pleopeltis parishii Bedd., Ferns Brit. India t. 125. 1866. – Type: Parish, Moulmein.

Description

Rhizome long creeping, up to 1 cm diam., densely scaly throughout; scales persistent, narrowing from peltate base to attenuate apex, pale brown with still paler margin and dark central point, about 6 by 1.5 mm, marginate with long downy white hairs. Nest-leaves wanting. Foliage-leaves: stipes stramineous, 5–10 cm long on scaly phyllopodia, scaly at base with scales similar to rhizome scales, very narrowly winged almost to the base; laminae oblong, up to 28.5 by 20 cm, deeply lobed almost to the rachis resulting in very narrow wings on rachis less than 2 mm in breadth; lobes (3–)5–9 (–11) pairs, oblanceolate, broadest usually at 1/3 length from apex, slightly narrowing to base, moderately acute to acuminate at apex, subentire and more or less crisped at margin, up to 11 by about 2 cm, patent or slightly ascending; veins raised on lower surface, anastomosing, 3–5 rows of areoles between adjacent main veins, with included free veinlets; chartaceous, green to paler. Sori round, in one row on each side of costa, rather close to costa , one between main veins, raised on upper surface.

Distribution in Thailand

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

Distribution in Laos

Salavan.

Wider Distribution

Burma and Vietnam.

Ecology

On mossy tree trunks in dense evergreen forests usually on ridges at 600–1300 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. 4958, Mae Hong Son, Ban Mae Yom Noi (E); Maxwell 00-279, Chiang Mai (CMU).

Rhizome

Rhizome

Whole plant upper surface

Whole plant upper surface

Whole plant lower surface

Whole plant lower surface

Lower frond surface

Lower frond surface

Old sori

Old 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.