TYPE. CUBA. C. Wright Lich. Cub. II. 60 (H-NYL 27145, holotype; FH-TUCK, isotype).

Description. Life form: lichenized fungus.

Thallus crustose, thin, ~0.2 mm thick, whitish, rimose. Ascomata lecanorine apothecia 1-3 mm diam., sessile; disk heavily whitish-pruinose; thalline margin (amphithecium) prominent, paler than disk. Amphithecium 70-210(-235) µm high, 80-90 µm thick laterally; amphithecial hyphae usually forming a compact pseudocortex. Exiple 15-35(-45) µm thick, +/- yellowish; epihymenium dark brown-purple, thin; hymenium hyaline, 60-95 µm high, I+ blue; paraphyses not well distinct; hypothecium 25-60(-100) µm thick. Asci 8-spored; ascospores ellipsoid, simple, 9-12(-14) × (5-)6-7(-8) µm.

Chemistry. Thallus, apothecial sections K+ yellow, C-, PD+ red or red-orange or PD-; atronorin; other lichenic acids (protocetraric, roccellic acid) sometimes present.

Substrate and Habitat. Corticolous on hardwood trees in mixed hardwood-pine forests and woodlands, also lignicolous, rarely saxicolous.

Distribution. Australia, Neotropics north to North America; in North Carolina found in the Coastal Plain ecoregion.

Literature

Brodo, I.M., M. Haldeman & J. Malíček (2019) Notes on species of the Lecanora albella group (Lecanoraceae) from North America and Europe. The Bryologist 122(3): 430-450.

Imshaug, H. A. & I. M. Brodo (1966) Biosystematic studies on Lecanora pallida and some related lichens in the Americas. Nova Hedwigia 12: 1-59.

Nylander, W. (1876) Lecanorae Cubanae novae. Flora (Regensburg) 59: 508-510 (original description as Lecanora glaucomodes).