Family

Dryopteridaceae

Nomenclature

Bolbitis scalpturata (Fée) Ching in C.Chr., Index Filic. Suppl. III.: 50. 1934; Seidenf., Nat. Hist. Bull. Siam Soc. 19: 87. 1958; Hennipman, Leiden Bot. Ser. 2: 163, f. 13a–d. 1977; Holttum, Fl. Males., Ser. II, Pterid. 1: 321, f. 27b. 1978; Tagawa & K.Iwats., Fl. Thailand 3: 312. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 183. 2000. – Heteroneuron scalpturatum Fée, Hist. Acrost.: 9, pl. 56. 1845.

Gymnopteris costata var. undulata auct. non (Hook.) Christ: Christ, Bot. Tidsskr. 24: 109. 1901. – Leptochilus scalpturatus var. undulatus auct. non (Hook.) C.Chr.: C.Chr. Bot. Tidsskr. 32: 344. 1916.

Description

Lithophytic. Rhizome creeping; scales up to 6 by 1.5 mm, blackish. Sterile frond: stipe stramineous, up to 40 cm long, scaly; lamina 20–50 by 7–25 cm, oblong in outline; rachis like the upper part of stipe, minutely scaly; lateral pinnae 5–7 pairs, widest at about the middle portion, up to 15 by 4 cm, entire or serrate at margin, reddish when dry; veins reticulate to form a row of costal areoles and one or two additional rows of areoles at each side of costa, usually with one or more free included veinlets. Fertile frond: stipe up to 50 cm long; lamina up to 40 by 12 cm; pinnae up to 8 by 1.5 cm, entirely covered by sporangia except on costa .

Distribution in Thailand

NORTHERN: Chiang Mai; NORTH-EASTERN: Loei; SOUTH-EASTERN: Trat; PENINSULAR: Surat Thani.

Wider Distribution

Burma, Indo-China, Malesia.

Ecology

On rocks in dense forests at 200–800 m alt.

Proposed IUCN Conservation Assessment

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