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 Thallus: crustose, continuous or ±cracked; surface: cream-colored, pale yellow or yellowish gray, smooth or uneven, often waxy, slightly shiny or dull, without soralia and isidia; Apothecia: flush with the thallus or slightly raised, lirellate; lirellae: short and oval to ±elongate, branched, slightly curved, 0.4-2 x 0.2-0.4 mm; disc: open, dark brown or brownish black, partly with whitish pruina; margin: excipular lips absent or inconspicuous, thalline margin, present but usually thin, often older (parts of) ascocarps with inconspicuous margins; exciple: poorly developed, hyaline or yellowish basally, pale brown to brown laterally and above; epihymenium: pale brown, c. 5 µm thick; hymenium: hyaline, inspersed, 90-120 µm tall, I-; paraphyses: 1.5 µm thick, tips pale brown, sparsely branched; subhymenium: hyaline to pale yellow, 10-20 µm thick; asci: 90-100 x 20-25 µm, 8-spored; ascospores: brown, transversely septate, 6-8-locular, 25-35 x 6.5-9 µm, I+ red or reddish brown; Pycnidia and conidia: not found; Spot tests: cortex and medulla K+ red, C-, KC-, P+ yellow; Secondary metabolites: norstictic and connorstictic acids.; Substrate and ecology: on bark; World distribution: western Europe as well as tropical to subtropical regions; Sonoran distribution: central, coastal California (and south of the Sonoran area). 


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© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

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