Megalospora atrorubicans subsp. australis Sipman
Holotype (fide Sipman): New Zealand. Otago, Tautuku Bush, on Weinmannia racemosa, December 1934. J.S. Thomson (T 1675) ZA 596, CHR 374739.
Thallus pale greenish or yellowish-grey, rather thick, ± prominently verrucose-papillate, papillae 0.2 mm diam., and 0.4 mm tall, often over-growing bryophytes on bark, very irregular in shape, without soredia or isidia. Apothecia scattered, 0.5-2.7(-3.1) mm diam., disc plane to convex, orange to reddish-brown or dark reddish-brown, glossy, epruinose, margins ± prominent, thin, black or dark brown, glossy, entire. Epithecium olive-brown or dark brown, 7-14 µm thick. Hymenium 130-160 µm tall, I+ blue. Ascospores 1 per ascus, straight, 1-septate, 60-120 × 20-40 µm. Chemistry: KC+ yellow, Pd-. Usnic acid and zeorin.
N: North Auckland to Wellington. S: Throughout, both east and west of the Main Divide. In coastal forested, localities on both east and west coasts. On Dacrydium, Nothofagus, Phyllocladus and Weinmannia.
Australasian
M. atrorubicans subsp. australis differs from M. gompholoma in lacking pannarin, having epruinose apothecial discs and lacking a warted epispore.
