Parmelina pseudorelicina
≡Parmelia pseudorelicina Jatta, Boll. Soc. Bot. Ital. 1910: 254 (1911).
Description : Thallus closely attached, 2–4 cm diam. Lobes imbricate, sublinear–elongate, irregularly branched, generally narrow, 0.5–3 mm wide, margins sinuous, black-rimmed, glossy, cilia sparse, black 0.1–0.3 mm long. Upper surface pale-grey to grey-green, plane, glossy, emaculate, smooth or weakly faveolate at first becoming wrinkled, without isidia or soredia; often with granular, white pruina towards lobe apices. Lower surface black with a narrow, brown, glabrous marginal zone, rhizinate. Rhizines scattered to common, simple, black. Apothecia common, sessile to subpedicellate, 2–4 mm diam., disc concave, smooth, glossy, rarely sparsely pruinose (×10 lens), exciple smooth. Ascospores broadly ellipsoidal to subglobose, 9–13 × 7–9 μm. Pycnidia common. Conidia bacillar to weakly fusiform, 7–8 × 1 μm.
Chemistry : Cortex K+ yellow; medulla K−, C+ red, KC+ red; Pd−; containing atranorin, chloroatranorin, lecanoric acid (major) and occasionally orsellinic acid (tr).
N: S: Known also from Australia (Elix 1994n: 129; McCarthy 2003c, 2006).
Australasian
Illustration : Elix & Johnston (1987b: 157, fig. 2 – as Parmelina stevensiana).
Parmelina pseudorelicina is characterised by: the corticolous habit; fertile thalli with emaculate, sparsely ciliate lobes; the absence of isidia and soredia; and the presence of lecanoric acid in the medulla.
