Family

Davalliaceae

Nomenclature

Davallia repens (L.f.) Kuhn, Filic. Decken.: 27. 1867 nom. cons., non Desv.; Christ, Bot. Tidsskr. 24: 111. 1901; Nooteboom, Fl. Males., Ser. II, Ferns and Fern Allies 3: 259. 1998; Newman et al., Checkl. Vasc. Pl. Lao PDR: 26. 2007. – Adiantum repens L.f., Suppl. : 446. 1781. – Humata repens (L.f) Diels, Nat. Pflanzenfam. 1(4): 209. 1899; C.Chr., Bot. Tidsskr. 32: 345. 1916; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 111, f. 13.1. 1939; Holttum, Rev. Fl. Malaya ed. 1, 2: 371, f. 216. 1955 [‘1954’]; Holttum, Dansk Bot. Ark. 20: 26. 1961; Holttum, Dansk Bot. Ark. 23: 235. 1965; Seidenf., Nat. Hist. Bull. Siam Soc. 19: 86. 1958; Ching, Fl. Reipubl. Popularis Sin. 2: 307, pl. 27, f. 1–5. 1959; Tagawa & K.lwats., SouthE. Asian Stud. 5: 77. 1967; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 54. 1968; U.Sen, T.Sen & Holttum, Kew Bull. 27: 228. 1972; Tagawa & K.Iwats., Fl. Thailand 3: 166. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 172, 236. 2000. – Pachypleuria repens (L.f.) M.Kato, J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 13: 573. 1985; Tagawa & K.Iwats., Fl. Thailand 3: 616. 1989. – Type: Sonnerat par Thouin (Commerson) 74 (P holo; L), Ile de France (Mauritius).

Davallia vestita Blume, Enum. Pl. Javae: 233. 1828. – Pachypleuria vestita (Blume) C.Presl, Epimel. Bot.: 261. 1851 [‘1849’]; Tagawa & K.Iwats., Fl. Thailand 3: 616. 1989. – Humata vestita (Blume) T.Moore, Index Fil.: xcii. 1857; Holttum, Rev. Fl. Malaya ed. 1, 2: 370, f. 215. 1955 [‘1954’]; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 77. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 165. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 236. 2000.

Humata pinnatifida Bedd., Suppl. Ferns Brit. Ind.: 12. 1892.

Description

Rhizome long creeping, 1.5–2 mm diam., glabrous, densely scaly throughout; scales linear-lanceolate, acuminate at basal edge, long-acuminate at apex, 6–9 mm by 1.2 mm, brown with paler margin. Stipes stramineous, terete, up to 15 cm long, sparsely scaly. Laminae oblong-subdeltoid or roundly pentagonal, (0.6–)2.5–14(–24) by (0.5–)2–11(–14) cm, pinnatifid to tripinnatifid in basal pinnae; basal pinna the largest, asymmetrically subtriangular to oblong-subdeltoid; upper pinnae linear-subtriangular, gradually becoming smaller upwards, shallowly lobed or entire, sessile or adnate; pinnules oblong, oblique, round at apex, lobed or subentire, coriaceous, glabrous. Sori marginal, small, 1–5 on each pinnule; indusia nearly semi-circular, entire and free except for the base to 1 mm broad.

Distribution in Thailand

NORTHERN: Mae Hong Son, Chiang Mai, Chiang Rai, Lamphun, Lampang, Phitsanulok; NORTH-EASTERN: Loei; SOUTH-WESTERN: Kanchanaburi, Phetchaburi, Prachuap Khiri Khan; CENTRAL: Nakhon Nayok; SOUTH-EASTERN: Chanthaburi, Trat; PENINSULAR: Ranong, Surat Thani, Phangnga, Nakhon Si Thammarat, Trang, Yala.

Distribution in Laos

Unspecified.

Distribution in Cambodia

Kampot.

Wider Distribution

Widely distributed in the tropics of the Old World: Madagascar and Seychelles, Mascarene Islands, Himalayas to S Japan, SE Asia generally, throughout Malesia to Polynesia and Australia.

Ecology

On mossy tree trunks or on rather dry rocks in half-shaded places in dense forests at 1000–1600 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. 5076, Phitsanulok, Phu Hin Rong Kla National Park (E).

Voucher specimens - Cambodia

Martin 1140, Kampot (P).