TYPE. CUBA. C. Wright ser. 2, 82 (H H-NYL 22572, lectotype designated by Hale 1978; UPS, isolectotype; M M-0034734 / 596726 / 266610, US 00069438, isotypes).

Description. Life form: lichenized fungus.

Thallus crustose, endophloeodal to epiphloeodal to ~70 μm thick, grayish green to pale olive, continuous, whitish, 6-12 cm diam.; surface grainy to verruculose; vegetative diaspores absent. Photobiont trentepohlioid alga in well-developed, continuous layer; calcium oxalate crystals abundant, small to large, often clustered. Ascomata thelotremoid apothecia, inconspicuous, abundant, solitary, to ~0.4 mm diam., immersed to slightly emergent; the thalline rim thick, roundish to irregular, becoming semierect, jagged; excipular rim well developed, thickened, filling the pore area and forming a double pore, flesh colored, the pore irregular, 0.2-0.3 mm wide; disk partly visible from above, grayish to flesh-colored, epruinose. Exciple fused to apically free, thin to thick, hyaline internally, pale yellowish to pale orange marginally; epihymenium hyaline; hymenium to ~200 μm high, not inspersed, moderately conglutinated; paraphyses parallel to slightly interwoven, unbranched, the tips not to slightly swollen. Asci (4-)6-8-spored; ascospores hyaline, muriform, 52-62 x 13-16 μm, I-.

Chemistry. Spot tests negative; no substances detected by TLC.

Substrate and Habitat. Corticolous on trees.

Distribution. Pantropical (Neotropics, Australasia, South-Southeast Asia), north into southeastern North America; in North Carolina found in the Coastal Plain ecoregion.

Literature

Hale, M.E., Jr (1978) A revision of the lichen family Thelotremataceae in Panama. Smithsonian Contributions to Botany 38: 1-60.

Mangold, A., J.A. Elix & H.T. Lumbsch. (2009) Thelotremataceae, Flora Australia 57: 195–420.

Nylander, W. (1866) Collectio lichenum ex insula Cuba. Flora (Regensburg) 49: 289-295 (original description).