Family

Pteridaceae, subfamily Vittarioideae

Nomenclature

Antrophyum callifolium Blume, Enum. Pl. Javae.: 111. 1828; Blume, Fl. Javae Fil.: 83, t. 35. 1829; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 204. 1940; Holttum, Rev. Fl. Malaya ed. 1, 2: 605, f. 356. 1955 [‘1954’]; Holttum, Dansk Bot. Ark. 23: 244. 1965; Tagawa & K.Iwats., SouthE. Asian Stud. 3(3): 89. 1965; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 110. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 221. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 133. 2000.

Antrophyum callifolium var. germainii C.Chr. & Tardieu, Notul. Syst. 7: 13. 1938; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 204. 1940.

Antrophyum annamense C.Chr. & Tardieu, Notul. Syst. 7: 13. 1938; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 204. 1940.

Antrophyum reticulatum auct. non (G.Forst.) Kaulf.: Bedd., Handb. Ferns Brit. India: 401, f. 235. 1883; Christ, Bot. Tidsskr. 24: 104. 1901; C.Chr., Bot. Tidsskr. 32: 348. 1916; E.Smith, J. Siam Soc. Nat. Hist. Suppl. 8: 7. 1929.

Antrophyum semicostatum auct. non Blume: Bonap., Notes Ptérid. 14: 63. 1923.

Antrophyum coriaceum auct. non (D.Don) Wall. ex T.Moore: Tardieu & C.Chr., Notul. Syst. (Paris) 7: 14. 1938, p.p. (specimen form Cambodia); Tardieu & C.Chr., Fl. Indo-Chine 7(2): 203. 1940, p.p.

Antrophyum sp.: Holttum, Dansk Bot. Ark. 20: 34. 1961.

Description

Epiphytic or lithophytic. Rhizome short creeping, bearing a few to several fronds in a tuft, scaly; scales narrowly subtriangular, gradually narrowing from base towards long-tailed apex, up to 5 by 0.8 mm, dark brown to blackish, sharply toothed at margin. Stipes short, indistinctly merging with the basal portion of frond, scaly. Frond variable in outline, usually oblong-lanceolate to broadly oblanceolate, gradually narrowing towards acuminate apex, gradually narrowing downwards, up to 30 by 8 cm, but soriferous even when less than 5 cm, leathery; costa distinct only in the lowest portion of fronds; veins more or less distinct, evenly anastomosing without included veinlets. Sori linear, anastomosing along veins, usually on the whole undersurface except for the lowest middle portion, i.e. near costa; paraphyses filamentous , long, numerous.

Distribution in Thailand

NORTHERN: Chiang Mai, Tak; NORTH-EASTERN: Loei, Nong Khai; SOUTH-WESTERN: Kanchanaburi, Phetchaburi; CENTRAL: Nakhon Nayok; SOUTH-EASTERN: Chanthaburi, Trat; PENINSULAR: Chumphon, Ranong, Surat Thani, Nakhon Si Thammarat, Phangnga, Phuket, Trang, Satun, Yala, Narathiwat.

Distribution in Cambodia

Kampot, Siem Reap

Wider Distribution

Widely known from the tropics of the Old World, although the exact boundary is not clear.

Ecology

On muddy rocks or on mossy tree trunks usually in dense evergreen forests at low or medium altitudes.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is common and widespread.

Notes

The size and form of fronds is very variable.

Voucher specimens - Thailand

Middleton et al. 4608, Trat, Ko Chang, Thanmagon Waterfall (E).

Voucher specimens - Cambodia

Poilane 15242 (P).