Hypotrachyna revoluta (Flörke) Hale
Parmelia revoluta Flörke, Dtsch. Lich. 1: 11 (1815).
Thallus lobate, orbicular, closely attached, 4-10 cm diam., corticolous and saxicolous. Lobes rather short, narrow 1-4 mm wide, subdichotomously branched, subimbricate, margins entire, axils sinuous, lobe apices often ± ascending. Upper surface smooth, shining, minutely maculate (×10 lens), pale greyish-green, sorediate. Soralia coarse to pustular, forming abraded patches towards lobe ends. Lower surface black, densely rhizinate. Rhizines black, dichotomously branched. Apothecia not seen. Chemistry: Cortex K+; medulla K-, C+ red, Pd-. Gyrophoric acid and atranorin.
N: South Auckland (Pio Pio), Wellington (Pahiatua Track, Waiopehu Peak, Haywards). S: Nelson (St Arnaud Ra., Lake Rotoiti), Otago (Waiatoto River, West Matukituki Valley, Leith Valley, Bethunes Gully, Dunedin), Southland (Queens Park, Invercargill). On bark of both native (Podocarpus totara, Nothofagus solandri var. cliffortioides) and introduced (Malus, Prunus) trees, or on rock in drier eastern localities. Still poorly collected.
Cosmopolitan
