Parmelinopsis minarum
≡Parmelia minarum Vain., Acta Soc. Fauna Fl. fenn. 7: 48 (1890).
Description : Thallus closely attached, 3–7 cm diam. Lobes contiguous, sublinear–elongate, subdichotomously branched, 1–3 mm wide; cilia mostly simple, to 0.7 mm long, irregularly scattered at margins. Upper surface whitish to pale green-grey, plane to convex, glossy, emaculate, smooth, without soredia or pustules. Isidia numerous, terete, erect, often branched, to 0.5 mm tall, without apical cilia. Medulla white. Lower surface black, rhizinate. Rhizines common, glossy, simple to sparingly furcate, black. Apothecia very rare, sessile, 1–4 mm diam., disc concave, exciple isidiate. Ascospores 12–17 × 8–10 μm. Pycnidia rare. Conidia cylindrical, 3–4 × 0.5 μm.
Chemistry : Cortex K+ yellow; medulla K−, C+ rose, KC+ red, Pd−; containing atranorin, chloroatranorin, gyrophoric acid (major), umbilicaric acid (minor), 5- O -methylhiascic acid (minor), 3-methoxy-2,4-di- O -methylgyrophoric acid (tr.) and 2,4,5-tri- O -methylhiascic acid (tr.).
N: Northland (Helena Bay), Gisborne (Waihau Bay). S: Nelson (Roding River), Westland (Greymouth). On coastal Metrosideros excelsa bark in the north and on serpentine rocks in Nelson (Elix & Johnston 1991: 9). Widespread, being known from all continents except Antarctica (Nash & Elix 2002f; Louwhoff & Elix 2002b; Wolseley et al. 2002; McCarthy 2003c, 2006).
Cosmopolitan
Illustrations : Hale (1976b: 24, fig. 12D – as Parmelina dissecta); Brodo et al. (2001: pl. 568); Louwhoff & Elix (2002b: 130, fig. 71); Dobson (2005: 308).
Parmelinopsis minarum is characterised by: the corticolous/saxicolous habit; the presence of simple cilia, laminal cylindrical isidia, cortical atranorin and chloroatranorin and medullary gyrophoric acid.
