Relicina circumnodata (Nyl.) Hale

Relicina circumnodata

Relicina circumnodata (Nylander) Hale, 1974:484.

Parmelia circumnodata Nylander in Crombie, 1883:51 [type-collection: Government Hill, Penang, Malaya, Maingay 22 (BM, lectotype; FH, H, isolectotypes)].

Thallus closely adnate on bark, 3–8 cm in diameter; lobes sublinear-elongate, 0.7–2 mm wide; bulbate cilia dense and conspicuous, strongly inflated and becoming globose and apically densely branched; upper surface plane to convex, continuous or faintly maculate, sparsely isidiate, the isidia simple, to 0.5 mm high; lower surface pale brown, rhizinate, the rhizines pale, more or less densely branched and agglutinated. Apothecia rare (frequency 10%), adnate, 1–2 mm in diameter, rim coronate; spores 8, cornute, 3 × 10–12 μm.

CHEMISTRY.—Medulla K−, C−, KC− or KC+ rose, P+ red, protocetraric and usnic acids.

HABITATS.—On trunks and canopy branches of dipterocarp and other trees in rain forest at sea level to 1300 m elevation.

DISTRIBUTION.—Malaya, Philippines, Sarawak.