Flora of New Zealand Series

T. periphysatum Zahlbr., Denkschr. Akad. Wiss. Wien math.-naturwiss. Kl. 104: 264 (1941).

Holotype: Australia, ?Victoria. Corticola and Black Spur. F.R.M. Wilson 514, G!

T. periphysatum. Lectotype: New Zealand. Auckland, Rangitoto I. On Pohutukawa bark. H.H. Allan, Z102, CHR 378078!

Thallus pale grey-white, very thin, dull, or shining and ± varnish-like in places, arachnoid or lacking in parts, elsewhere rather granular or subverrucose or irregularly cracked, in irregular patches to 4 cm diam. Apothecia ± sessile or semi-immersed, 0.5-1.5 mm diam., margins thick, cracked, coarse, pulverulent exfoliating, Geaster -like, often obscuring disc, concolorous with thallus, pore 0.2-0.6 mm diam., disc pale pinkish-buff or whitish, granular. Hymenium colourless 102-120 µm thick. Ascospores 8 per ascus, colourless, muriform, broadly fusiform-ellipsoid, apices rounded or slightly pointed, (35-)50-60 × 12-15(-20) µm. Chemistry: TLC - four unidentified compounds.

N: North Auckland, Rangitoto I. Probably more widespread on bark of coastal trees and shrubs in northern North I.

Australasian