Cyathea chinensis Copel.

Family

Cyatheaceae

Nomenclature

Cyathea chinensis Copel., Philipp. J. Sci. 3: 355. 1909; Holttum, Kew Bull. 19: 466. 1965; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 45. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 102, f. 6.1–3 & 6. 1979; Boonkerd & Pollawatn, Pterid. Thailand: 113. 2000. – Type: China, Yunna, Szemao, Henry 13136 (E).

Amphicosmia brunoniana auct. non (Wall. ex Hook.) Bedd.: Bedd., Handb. Ferns Brit. India: 10. 1883. – Cyathea brunoniana auct. non (Wall. ex Hook.) C.B.Clarke & Baker: Tardieu & C.Chr., Fl. Indo-Chine 7(2): 86. 1939. – Sphaeropteris brunoniana auct. non (Wall. ex Hook.) R.M.Tryon: Newman et al., Checkl. Vasc. Pl. Lao PDR: 26. 2007.

Alsophila costularis Baker, Bull. Misc. Inform. Kew 1906: 8. 1906; R.M.Tryon, Contr. Gray Herb. 200: 31. 1970, non Cyathea costularis Bonap. 1917.

Description

Trunks up to 5 m or more tall. Stipes about 50 cm long, dark purplish near base, brownish upwards, with rather dense short spines throughout, warty; scales linear, to 3.5 cm long, 1.5 mm broad, shining dark brown, stiff, the edges narrow, paler, ferrugineous, soon abraded; main rachis smooth, glabrescent, light brown; largest pinnae about 50 cm long, 13 cm wide, narrowly oblong, basal pinnae a little reduced; pinna-rachis pale beneath, bearing pale crisped hairs; pinnules more than 30 in pairs, sessile, patent, lanceolate, acuminate at apex, broadly cuneate or subtruncate at base, about 8 cm long, 1.3 cm wide, about 1.5 cm apart, lobed almost to costae leaving laminae 1 mm broad, lobes oblique, falcate, round to moderately acute at apex, crenate-serrate at margin, about 7 mm long, 3 mm broad; costae and costules hairy throughout on lower surface, scales few, pale, more or less convex, hardly bullate; texture papyraceous, light green, paler beneath; veins simple or forked. Sori close to costules; receptacles large; indusia in mature sori reflexed as broad pale brown scales, irregular and abraded at margin .

Distribution in Thailand

NORTHERN: Mae Hong Son, Chiang Rai, Phitsanulok; NORTH-EASTERN: Phetchabun.

Distribution in Laos

Xieng Khouang.

Wider Distribution

E Himalayas, Yunnan and Indochina.

Ecology

On moist slopes at edge of lower montane forest at about 1200 m alt.

Proposed IUCN Conservation Assessment

Least Concern (LC). Although Cyathea species are often exploited for the horticultural industry (mainly for their trunks as a base for epiphytic orchids) this species is widespread and not noticeably being adversely impacted.  Monitoring is necessary.

Notes

Fibrous trunk used for orchid media.

Voucher specimens - Thailand

Middleton et al. 5101, Phitsanulok, Phu Hin Rong Kla National Park (E); Shimizu et al. T-11700, Phetchabun (E).

Habit

Habit

Crown

Crown

Crown

Crown

Pinnae

Pinnae

Site hosted by the Royal Botanic Garden Edinburgh. Content managed by Stuart Lindsay, Gardens by the Bay, Singapore and David Middleton, Singapore Botanic Gardens. Last updated 16 November 2016.