Collema glaucophthalmum Nyl.
Thallus small to large, to 6 cm diam., foliose, rounded to extended, ± adnate or slightly ascending at margins, ± deeply and broadly lobate, thin to rather thick, membranous, strongly fenestrate, richly or more sparsely pustulate and ridged, especially in older parts, ridges and pustules often radiating, ± olive-green (lower surface concolorous or paler), matt or glossy, without isidia. Lobes few, rounded or somewhat extended, imbricate or not, 0.5-1 cm broad, sparsely lobulate, lobules ± rounded, margins entire or slightly incised, flat or bent downwards or upwards, never swollen. Apothecia ± numerous and dense, sometimes crowded, laminal, especially on ridges and pustules, sessile, constricted at base, ± broadly stipitate, to 1.5 (rarely to 3.5) mm diam., sometimes laterally compressed, disc plane or subconcave to convex, red, pruinose, pruina thick, rarely thin and disappearing, grey-blue or white, thalline margin thin to moderately thick, entire, smooth or wrinkled or somewhat knotty, scarcely prominent in mature fruits, persistent or disappearing, proper margin very thin and whitish or lacking. Ascospores (6-)8 per ascus, usually polystichous forming a bundle, straight or curved or winding in asci, ± narrowly fusiform to ± broadly acicular or subbacillar, straight or curved, 6-10(-12)-celled with end cells usually thinner and extended, rarely constricted at septa (20-)40-60(-95) × (3-)4.5-6.5 µm. Pycnidia common and often numerous, immersed laminal, submarginal and sometimes in apothecial margin, globose, 200 µm diam., visible as small, pale dots on both sides of thallus.
N: Taranaki (Mt Egmont). S: Southland (Milford Sound). In dense shade in Nothofagus forest, rather rarely collected; corticolous, on trunks and twigs, s.l. to 700 m.
Pantropical
