Cresponea ancistrosporelloides Sparrius & Sipman  

Mycobank MB 517759

Thallus crustose, saxicolous, over 10 cm wide, flat, pale grey, finely areolate, up to 150 µm thick; areoles irregular in size and outline, 0.1–0.6 mm wide, separated by thin and irregularly winding fissures; cortical layer up to 30 µm, of dense, winding hyphae; medulla ca. 100 µm, white, with loose hyphae and ca. 8 µm diam., thick-walled trentepohlioid photobiont cells. Apothecia frequent, black, slightly glossy, 0.3–0.6 mm in diam., with flat disc and thin margin not extending above the disc. Excipulum dark-brown, strongly conglutinated and without individual hyphae visible. Hypothecium pale. Hymenium 60–65 µm tall, clear, I+ reddish throughout; paraphysoids 2 µm thick, septate, hardly branched between the asci, apically swollen to ca. 4 µm and furcate; terminal cell or two uppermost cells clavate, 3–4 x 6–10 µm, covered by a brown layer with tiny granules. Epithecium dark-brown, ca. 20 µm, composed of densely agglutinated paraphyse tips. Asci pyriform, ca. 50–60 x 20–22 µm. Ascospores 8/ascus, (6–)8-loculate, fusiform, with thin walls and septa without thickened edges, at base usually attenuated into a ca. 20 µm long tail which is spiralled in the ascus, (30–)45–50 x 5 µm. Pycnidia not seen. Secondary chemistry: thallus K–, C–, KC–, UV–; no substances found.