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 Life habit: lichenized; Thallus: crustose, areolate, margin thinning at edge, without elongated lobes; prothallus: present, gray; surface: orange, smooth, without asexual propagules; cortex: cellular, 10-30 µm thick, granules absent; medulla dense, without granules; Apothecia: immersed, 0.1-0.3 mm in diam., lecanorine; disc: red, flat, epruinose; margin: persistent, flush; thalline margin present, concolorous with thallus; proper margin not visible; parathecium: elongate to oval cells; exciple below hypothecium prosoplectenchymatous; epihymenium: golden, K+ red, H-, 10%N-, cN-, C-; hymenium: hyaline, 55-70 µm tall; paraphyses: 2-3 tip cells slightly swollen, with few branches; subhymenium hyaline; asci: cylindrical, 8-spored; ascospores: hyaline, 2 locules, ellipsoid, 8.5-10 x c. 5.5 µm, isthmus 3-4 µm, spore end wall thin; Pycnidia: not observed; Spot tests: apothecial margin K+ red, H-, 10% N-, cN-, C-; thallus K+ red, H-, 10%N-, cN-, C-; Secondary metabolites: unidentified anthraquinones.; Substrate and ecology: on non-calcareous rocks; World distribution: Europe and North America; Sonoran distribution: Baja California and Sonora.; Notes: See notes under C. cinnabarina. 

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© Lichen Unlimited: Arizona State University, Tempe.

Source: Lichen Flora of the Greater Sonoran Desert Region

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