Flora of New Zealand Series

Lectotype (fide Hayward, 1977): New Zealand, Sine loco (?Wellington). Charles Knight, 65A:8, WELT.

Thallus continuous, somewhat uneven, cream-white to yellow and somewhat shiny, corticolous. Lirellae prominent, long, slender, 2.0-4.0 × 0.2 mm, flexuous, branched, dendroid, thalline margin lacking, proper exciple distinct and raised, open, sometimes exposing a pale disc, base open. Ascospores small, undivided or occasionally divided once with two uneven locules, 3-6 × 12-17 µm. Chemistry: Norstictic acid.

N: Wellington, Sine loco. S: Southland (Cascade Creek, Eglinton Valley, George Sound). On bark in Nothofagus forest.

Endemic

O. stellata is distinguished by the long, dendroid lirellae, the mostly simple spores and norstictic acid in the thallus.