Flora of New Zealand Series

Thelotrema monosporoides Nyl., Lich. N.Z.: 76 (1888).

Lectotype (fide Hale, 1981): New Zealand. Sine loco (prob. Wellington). Charles Knight, H-NYL.

Thallus pale straw-coloured 2-6 cm diam., appearing thick, dull, smooth to verrucose, fissured, cortex dense, 15-20 µm thick, algal layer continuous, 10-15 µm thick, medulla 10-15 µm thick, mostly hypophloeodal. Apothecia semi-emergent, 1.0-1.3 mm diam., exciple carbonised apically, columella lacking, pore variable, round, 0.1-0.3 mm diam., ± depressed. Hymenium 280-300 µm thick. Ascospores 1 per ascus, colourless to pale brown or darkening at maturity, muriform, 120-210 × 30-35 µm, I—. Chemistry: Nil.

N: Known only from the type collection.

New Zealand, also in Sri Lanka