Davallia pectinata Sm.

Family

Davalliaceae

Nomenclature

Davallia pectinata Sm., Mém. Acad. Roy. Sci. (Turin) 5: 415. 1793; Nooteboom, Fl. Males., Ser. II, Ferns and Fern Allies 3: 258. 1998. – Humata pectinata (Sm.) Desv., Mém. Soc. Linn. Paris 6(3): 323. 1827; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 109. 1939; Holttum, Rev. Fl. Malaya ed. 1, 2: 369, f. 214. 1955 [‘1954’]; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 49. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 167, f. 12.4. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 236. 2000. – Pachypleuria pectinata (Sm.) C.Presl, Epimel. Bot.: 98. 1851 [‘1849’]; Tagawa & K.Iwats., Fl. Thailand 3: 616. 1989. – Type: D.Hurloch 1786, "India Orientalis".

Humata parallela Brack., U.S. Expl. Exped., Atlas Filic.: 229. 1854; Bedd., Handb. Ferns Brit. India: 47, f. 22. 1883.

Nephrodium gaimardiana Gaudich., Voy. Uranie.: 335, t. 12, f. 1. 1827. – Humata gaimardiana (Gaudich.) J.Sm., Lond. J. Bot. 1: 425. 1842; E.Smith, J. Siam Soc. Nat. Hist. Suppl. 8: 3. 1929.

Description

Rhizome long creeping, about 1.5 mm diam., glabrous, densely scaly throughout; scales oblong-lanceolate, round to moderately acute at base, acuminate at apex, up to 6 by 1.3 mm, brown with pale ferrugineous margin. Stipes up to 15 cm long, sparsely scaly, terete. Laminae oblong, acuminate, round at base, up to 17 by 4.5 cm, lobed nearly to rachis; lobes rounded to moderately acute, entire or crenulate, each basal lobe bearing a few secondary lobes, coriaceous, glabrous. Sori along the margin of lobes, a little inside the margin; indusia round , up to 1 mm broad.

Distribution in Thailand

PENINSULAR: Surat Thani, Narathiwat.

Wider Distribution

Throughout Malesia, north to S Vietnam.

Ecology

On rocks in evergreen forests at about 300 m alt.

Proposed IUCN Conservation Assessment

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

Habit

Habit

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