Abrodictyum pluma (Hook.) Ebihara & K.Iwats.

Family

Hymenophyllaceae

Nomenclature

Abrodictyum pluma (Hook.) Ebihara & K.Iwats., Blumea 51(2): 243. 2006. – Trichomanes pluma Hook., Icon. Pl. 6: t. 997. 1854.

Trichomanes meifolium Bory ex Willd., Sp. Pl. 5: 509. 1810; Copel., Philipp. J. Sci. 51: 265. 1933; Holttum, Rev. Fl. Malaya ed. 1, 2: 103. 1955 [‘1954’]. – Macroglena meifolia (Bory ex Willd.) Copel., Philipp. J. Sci. 67: 83. 1938; Tagawa & K.Iwats., Fl. Thailand 3: 98, f. 5.8. 1979. – Cephalomanes meifolium (Bory ex Willd.) K.Iwats., Acta Phytotax. Geobot. 35: 177. 1984; Tagawa & K.Iwats., Fl. Thailand 3: 615. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 67. 2000.

Description

Terrestrial. Rhizome 1.2–1.5 mm diam., rather densely covered with bright brownish setose hairs. Stipes rather close, stiff, very narrowly winged, dark brown, hairy when young, 0.7–1 mm diam., to 8 cm long. Fronds oblong-lanceolate, acute at apex, cuneate at base, 7–17 cm long, 2.5–5 cm wide, finely dissected to quadripinnate, second and third branching not in a plane and fronds more or less cubic in form; rachis very narrowly winged, the wings with a single row of cells; pinnae ascending, oblong in outline, round at apex, cuneate to subtruncate at base, in larger ones more than 2 cm long, 1 cm wide, shortly stalked; ultimate segments very narrow, with less than two rows of cells at each side of veins, setaceous, straight. Sori at apices of short segments usually near pinna-rachis; involucre cup-shaped, less than 1 mm long, 0.7 mm diam., the mouth truncate ; receptacles extruded, slender.

Distribution in Thailand

PENINSULAR: Nakhon Si Thammarat, Yala.

Wider Distribution

Widely distributed throughout the tropics of the Old World.

Ecology

Terrestrial on humus-rich floor of dense forest at medium altitudes.

Proposed IUCN Conservation Assessment

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

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.