Flora of New Zealand Series

Holotype: New Zealand. Canterbury, Cass, Mt Misery, in upper subalpine belt. G. Einar and Greta Du Rietz, 1468: 15, 1926, S.

Thallus determinate, effigurate, rosette-forming to irregular, closely attached, to 5 cm diam., prothallus absent, saxicolous. Lobe margins inflated, effigurate, 4-7 mm long, becoming areolate, complex centrally, 1-1.5 mm wide and 0.4 mm thick, transversely cracked or separated by narrow cracks, apices rounded or crenulate. Upper surface distinctly bullate-areolate, areolae subspherical or rather convoluted, with intervening cracks, often well-separated, smooth, matt or shining, epruinose, pale brownish-pink or flesh-coloured, soredia and isidia absent. Cephalodia central, rather sparse, sessile, rounded to subirregular, to 5 mm diam., radially wrinkled and folded, reddish-pink, dull, epruinose. Apothecia numerous, sessile, rounded, to 1.5 mm diam., thalline margin entire, thick, disc plane, brownish, dull, epruinose. Hymenium 160-185 µm tall, pale yellowish above. Ascospores ellipsoid 12-19 × 8-10 µm. Pycnidia immersed, in swellings, ostioles prominent, red-brown. Conidia filiform, slightly curved, 16-20 × 0.5 µm. Chemistry: Cortex K-, C-; medulla K-, C-, Pd-.

S: Marlborough (Mt Tapuaenuku), Canterbury (Mt Misery, Cass).

Endemic