Asplenium crinicaule Hance

Family

Aspleniaceae

Nomenclature

Asplenium crinicaule Hance, Ann. Sci. Nat., Ser.5, 5: 254. 1866; Bedd., Handb. Ferns Brit. India: 150. 1883; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 227. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 87. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 284. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 109, 139. 2000.

Asplenium pellucidum auct. non Lam.: Christ, Bot. Tidsskr. 24: 108. 1901; C.Chr., Bot. Tidsskr. 32: 346. 1916.

Description

Epiphytic or lithophytic. Rhizome short, erect, densely scaly; scales gradually narrowing from base towards hairy pointed apex, up to 7 by 1 mm, the margin bearing irregular and sparse projections, brown to black. Stipes usually up to 10 (rarely up to 15) cm long, dark brownish-purple to nearly black, bearing narrow scales throughout. Frond narrowly lanceolate, gradually narrowing towards both ends, acuminate at apex, usually about 30 by 6 cm, fairly variable in size; rachis with very narrow hair-like scales; lateral pinnae about 25 pairs, sessile, narrowly subtriangular to elliptic, falcate or nearly patent, acute at apex, auricled at acroscopic base, narrowly cuneate at basiscopic base, the middle largest ones 2.5–5.5 by 0.7–1.5 cm, indistinctly lobed; lobes with a few teeth, each containing a single veinlet, softly chartaceous, deep green in living condition and brown when dried. Sori long, crescent-shaped along the posterior veinlets, opening towards posterior, indusium entire .

Distribution in Thailand

NORTHERN: Chiang Mai, Chiang Rai, Lamphun, Lampang; NORTH-EASTERN: Loei; SOUTH-WESTERN: Kanchanaburi, Phetchaburi, Prachuap Khiri Khan; CENTRAL: Nakhon Nayok; SOUTH-EASTERN: Chanthaburi, Trat.

Distribution in Laos

Khammouane, Xieng Khouang.

Distribution in Cambodia

Kompong Speu

Wider Distribution

India, S China and Indochina.

Ecology

On mossy tree-trunks or on mossy or muddy rocks, usually in lower montane forests at 900–1600 m alt.

Proposed IUCN Conservation Assessment

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

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