Selliguea stenophylla (Blume) Parris

Family

Polypodiaceae

Nomenclature

Selliguea stenophylla (Blume) Parris in Parris et al., Pl. Mount Kinabalu I, Ferns and fern allies: 151. 1991; Hovenkamp, Fl. Males., Ser. II, Ferns and Fern Allies 3: 222. 1998; Boonkerd et al., Thai For. Bull. (Bot.) 32: 10. 2004. – Polypodium stenophyllum Blume, Enum. Pl. Javae: 124. 1828. – Pleopeltis stenophylla (Blume) T.Moore, Index Fil.: lxvii. 1857; Bedd., Handb. Ferns Brit. India: 348. 1883. – Paragramma stenophylla (Blume) J.Sm., Hist. Fil.: 115. 1875. – Crypsinus stenophyllus (Blume) Holttum, Rev. Fl. Malaya ed. 1, 2: 199, f. 101. 1955 [‘1954’]; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 53. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 557. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 268. 2000. – Type: van Hasselt s.n. (L), Java (according to Flora Malesiana); Blume, Java, (holotype L, Morton photograph 1969) (according to Morton).

Description

Rhizome long creeping, 1.5–2(–3) mm diam., sometimes a little glaucous but usually dark brown, densely scaly in younger portion; scales peltate, acute at basal edge, gradually narrowing towards attenuate apex, brown to dark brown in central portion, paler in the distal and marginal portions, those paler portions fallen off in the older scales, 5.5–7(–8) by 0.9–1.2(–1.5) mm. Stipes 0.2–7 cm long, stramineous or darker, indistinct from the decurrent base of fronds. Laminae simple, narrowly lanceolate, moderately acute to acute at apex, gradually narrowing and decurrent towards attenuate base, (1.5–)6–15(–26.5) by 0.7–1.2(–2) cm, the sterile fronds sometimes shorter and broader, entire but cartilaginous and more or less involute at margin; midrib raised beneath, lateral main veins distinct on under surface, ascending, other veins obscure, anastomosing; chartaceous, glabrous. Sori one between main lateral veins, in a single row at medial position, round, about 2 mm diam., immersed in cavities which are prominent on the upper surface of fronds.

Distribution in Thailand

PENINSULAR: Yala, Narathiwat.

Wider Distribution

Throughout Malesia.

Ecology

Epiphytic in evergreen forests at 900–1200 m alt, in the southernmost part of Thailand.

Proposed IUCN Conservation Assessment

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

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