Bolbitis costata (C.Presl) Ching ex C.Chr.




Bolbitis costata (C.Presl) Ching ex C.Chr., Index Filic. Suppl. III.: 47. 1934; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 91. 1967; Hennipman, Leiden Bot. Ser. 2: 155, f. 41. 1977; Tagawa & K.Iwats., Fl. Thailand 3: 311. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 182. 2000. – Campium costatum C.Presl, Tent. Pterid.: 238, pl. X23. 1836; C.Chr., Contr. U.S. Natl. Herb. 26: 331. 1931. – Gymnopteris costata (C.Presl) Bedd., Suppl. Ferns Brit. Ind.: 27. 1876; Bedd., Handb. Ferns Brit. India: 438, f. 266. 1883.


Terrestrial. Rhizome thick, scaly. Sterile frond: stipe stramineous, about 60 cm long, densely scaly with light brown appressed membranous oblong-ovate scales; lamina oblong-lanceolate, about 65 by 28 cm; rachis minutely scaly; lateral pinnae 8 pairs, oblong-lanceolate, caudate at apex, round to cuneate at base, subentire, up to 20 by 4 cm, shortly stalked, ascending and straight or slightly falcate, little reduced towards both ends; terminal pinna longer, 23 by 3.8 cm, cuneate at base, viviparous near apex; costa sparsely scaly beneath; veins raised on lower surface, main veins 3–5 mm apart, more than one row of areoles between main veins, a few veinlets included; coriaceous, green but reddish when dried. Fertile frond: stipe about 60 cm long, scaly; lamina 30 by 12 cm; lateral pinnae 6 pairs, linear with round apex, shortly stalked, up to 80 by 8 mm; terminal pinna like the lateral ones, a little longer; sporangia dispersed on the whole under surface of pinnae .

Distribution in Thailand

NORTHERN: Chiang Mai, Lampang.

Wider Distribution



On rather dry slopes in mountain forests at 600–1000 m alt.

Proposed IUCN Conservation Assessment

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

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 24 January 2012