Leptogium plicatile (Ach.) Leight.
Lichen plicatilis Ach., K. Vet. Acad. nya Handl.: 11 (1795).
Thallus small, irregularly pulvinate to 1 cm diam., saxicolous, irregularly lobed, dark brown to black. Lobes elongate, rounded to flattened, margins entire, to 1 mm wide, surface granular-isidiate, irregularly wrinkled-plicate. Apothecia common, sessile, laminal, 0.5-1 mm diam., disc concave, brown to dark red-brown, thalline exciple entire, concolorous with thallus. Ascospores ellipsoid, apices rounded to pointed, 3-septate to submuriform, 20-24 × 7-9 µm.
S: Nelson (Takaka Hill), Marlborough (Chalk Ra.), Canterbury (Cave Stream), Southland (Clifden). On limestone; a characteristic small, dark, isidiate plant.
Cosmopolitan
