Leptogium burgessii (L.) Mont.
Lichen burgessii L. in Murray, Syst. orb. veg.: 807 (1774).
Thallus lobate, orbicular to spreading, to 6 cm diam., olive greenish or leaden brown or pale greyish-blue. Lobes crowded, somewhat imbricate, crenulate or lacerate and crisp. Upper surface smooth, thallus not swelling much when wet, not plicate-wrinkled, without isidia. Lower surface white-tomentose, hairs short, 20 µm, cells spherical. Apothecia numerous, 0.5-2.0 mm diam., concave at first, becoming plane, reddish-brown or dark red, thalline exciple crowded with projecting lobules. Ascospores ellipsoid to broadly fusiform, 3-4 transverse septa, submuriform, 30-40 × 13-17 µm.
Ch: (Travers). Still very poorly known and collected in New Zealand. Coastal, corticolous.
Cosmopolitan
