e-Flora of Thailand

Volume 3 > Part 1 > Year 1979 > Page 104 > Cyatheaceae > Cyathea

4. Cyathea latebrosa (Wall. ex Hook.) Copel.wfo-0001118146

Philipp. J. Sci. 4: 52. 1909; Tardieu & C.Chr. in Fl. Indo-Chine 7(2): 85. 1939; Holttum, Rev. Fl. Malaya 2: 120. f. 48. 1955; Dansk Bot. Ark. 20: 18. 1961: Fl. Males., Ser. II. 1: 115. 1963; Kew Bull. 19: 472. 1965; Tagawa & K.Iwats., S.E. Asian Stud. 5: 45. 1967.


Accepted Name : Alsophila latebrosa Wall. ex Hook.
Sp. Fil. 1: 37. 1844; Bedd., Handb. Ferns Brit. India: 11. 1883; R.M.Tryon Contr. Gray Herb. 200: 32. 1970.


Description : Trunks 3–5 m or more tall. Stipes 30–40 cm long, with very short spines, yellowish brown to darker, scaly at base; scales linear, to 2 cm long, 1.2 mm broad, dark brown, shining, stiff, the edges paler, ferrugineous, soon abraded; pheumathodes in a single row, separated or continuous, smooth, glabrescent or hairy on upper surface; lower pinnae reduced to 10 cm long, irregular in form, rather distant, larger pinnae about 40 cm long, 14 cm wide, narrowly oblong, caudately acuminate at apex; pinna-rachis warty beneath, hairy and sparsely scaly on upper surface; pinnules more than 25 pairs, larger ones about 1.6 cm apart, oblong-lanceolate, gradually narrowing towards acuminate apex, subtruncate at base, sessile, to 7 cm long, 1.7 cm wide, lobed nearly to costa; lobes oblique, falcate, round at apex, entire or slightly serrate at margin, to 1 cm long, 3 mm broad; costae hairy on upper surface, costae and costules scaly beneath with elongate, flat, brown scales in basal part, with pale bullate scales in distal part; texture papyraceous, deep green, paler beneath, veins forked or distal ones simple. Sori close to costules; indusia small; scales at costular side of receptacles, hidden by mature sori.


Thailand : NORTHERN: Chiang Mai (Doi Suthep); CENTRAL: Nakhon Nayok (Khao Yai); SOUTH-EASTERN: Chanthaburi (Khao Soi Dao), Trat (Ko Chang); PENINSULAR: Chunphon (Thasan), Nakhon Si Thammarat (Khao Luang), Trang (Khao Chong, Khao Sung), Narathiwat (Su-ngai Padi), Yala (Muang Wieng, Khao Kalakhiri).


Distribution : Cambodia, Hainan, Malaya (type), Sumatra, Borneo.


Ecology : On mountain slopes usually in dense tropical evergreen forests below 1,000 m alt.


Vernacular : Kuy ton (กูดต้น), kut phrao (กูดพร้าว)(Northern); maha sadam (มหาสดำ)(Southeastern).


Uses: Fibrous trunk used for orchid media.


E-version notes : For more details see Ferns of Thailand, Laos and Cambodia.


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