Flora of New Zealand Series

≡Parmelia revoluta Flörke, Dtschl Lich. 1: 11 (1815).

Descriptions : Flora (1985: 199–200) See also Elix (1994h: 58).

Chemistry : Cortex K+ yellow, UV−; medulla K−, C+ red, KC+ red, Pd−, UV−; containing atranorin, chloroatranaorin, gyrophoric acid (major) and 5- O- methylhiascic acid (minor).

N: South Auckland (Pio Pio), Wellington (Tararua Ra.). S: Nelson (St Arnaud), Otago (Waiatoto River, Matukituki Valley, Leith Valley, Bethune's Gully, Dunedin), Southland (Invercargill). Ant.: On bark of both native and introduced trees, or on rock, in drier eastern localities. Still poorly collected in New Zealand. Known also from Great Britain, Europe, Scandinavia, North and South America, the Caribbean, South Africa, Japan, Indonesia. Papua New Guinea and Australia (Purvis et al. 1992; Nimis 1993; Santesson 1993; Esslinger & Egan 1995; Kantvilas et al. 2002; Louwhoff & Elix 2002; Nash et al. 2002b; McCarthy 2003c, 2006; Nimis & Martellos 2003; Geiser et al. 2004; Santesson et al. 2004).

Cosmopolitan

Illustrations : Hale (1975: 61, fig. 17d); Wirth (1987: 328; 1995b: 649 – as Parmelia revoluta); Dobson (1992: 227; 2000: 272; 2005: 194); Flora of Australia 55 : xiii (1994); Goward et al. (1994b: 62, fig. 4A); Brodo et al. (2001: 359, pl. 394); Kantvilas et al. (2002: 56); Louwhoff & Elix (2002a: 97, fig. 49); Sérusiaux et al. (2004: 87).

Hypotrachyna revoluta is characterised by: the corticolous/saxicolous habit; the short, subascending, revolute lobes with extensive subapical soredia; and gyrophoric acid in the medulla.