Acarospora gyrodes H.Magn.
Holotype: New Zealand. Otago, Cromwell, on rocks near railway station. G. Einar and Greta Du Rietz, 1927, S!
Thallus areolate, thin, 0.4 mm thick, in effuse patches among other lichens, 1-2 cm diam., pale greyish. Apothecia in contiguous areolae, 0.4-0.7 mm diam., disc dark reddish-brown, gyrose, with a paler central columella of sterile tissue. Ascospores minute, 100-200 per ascus, 3.5-5 × 1.7 µm.
S: Eastern Canterbury and Central Otago, on stones and rocks, alpine.
Endemic
