Thallus bullate-areolate, consisting of pale brown to grey, convex, basally constricted areoles, 0.2-1.5 mm broad, older areoles sometimes somewhat sunken and darker towards the center; medulla and upper algal-free layer I–, or locally I+ pale violet. Photobiont chlorococcoid.
Apothecia black when dry and dark brown when wet, soon convex, up to 1.7 mm in diam; proper margin only apparent in young apothecia, in section cupular, unpigmented, except for a narrow, epihymenium-like brown rim. Hymenium 75–110 µm tall, upper 15–20 µm with brown pigment; paraphyses ± 2.0 µm wide, branched and anastomosing, apically up to 3–5 µm; epihymenium olive-brown. Asci clavate-cylindrical, 55–70 × 12–17 µm, Porpidia-type; ascospores simple, hyaline, ellipsoid, with a thin halo, (10–)12–15 (–18) × (5–) 6–6.5 (–8) µm. Hypothecium hyaline.
Conidiomata: not detected.

Chemistry: no substances by TLC.

Etymology: Named after Brian Coppins, in admiration of his outstanding contributions to the knowledge of crustose lichens.

Distribution and Ecology: Known only from siliceous rocks in maritime Antarctica.

Remarks: Closely related to Poeltiaria subcontinua (Nyl.) Hertel & Fryday and largely consistent with the anatomical characters of its ascocarps. Differing in thallus structure and perhaps in its Maritime Antarctic distribution, for it is still unknown from those subantarctic regions (South Georgia, Prince Edward Islands, Īles Kerguelen), where P. subcontinua is known to occur.

Search for this species on:
Click on a thumb-nail for a full size image.
Use cursors keys, or move mouse to side of image, for next (or previous) image.

Thallus and apothecia