Psoromidium versicolor (Hook.f. & Taylor) D.J.Galloway
Lecanora versicolor J.D. Hook. et Taylor, Hook. Lond. J. Bot. 3: 642 (1844).
Lectotype: New Zealand. Lord Aucklands Group. On Bark. J.D. Hooker, BM!
Thallus minutely squamulose, in irregular patches 1-2 cm diam. Squamules flattened, irregular, convex, 0.1-0.3 mm diam., ± confluent-imbricate centrally, scattered on a fine, thin, black prothallus marginally, pale yellow-green or olivaceous, paler at margins, matt or ± shining. Cephalodia 0.5-2.0 mm diam., plicate-radiate, pale greyish or bluish-yellow, ± conical centrally, overgrowing squamules centrally or scattered on prothallus at margins. Apothecia scattered, solitary to 2-3-confluent, mainly central, 0.1-2.5 mm diam., sessile, disc pale to dark red-brown, concave to plane or ± undulate-convex, matt, margins prominent, pale flesh-coloured to yellowish, consistently paler than disc, entire or crenulate, persistent, occasionally with a fringe of fine, white, silky hairs below. Paraphyses simple, coarsely submoniliform at apices. Ascospores ellipsoid with slightly pointed ends, 11-15.3 × 7-8.5 µm, wall smooth, 2 µm thick.
A: Terror Cove, Erebus Cove, Laurie Harbour. On bark of Fuchsia, Metrosideros umbellata and Neopanax, lowland, coastal.
Austral
