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Scoliciosporum umbrinum (Ach.) Arnold  
Familia: Scoliciosporaceae
[Bacidia psotina (Fr.) Dalla Torre & Sarnth., moreBacidia turgida (Körb.) Hellb., Bacidia umbrina (Ach.) Bausch, Bacidia umbrina var. athallina Räsänen, Bacidia umbrina var. compacta (Körb.) Th. Fr., Bacidia umbrina var. corticola (Anzi) Bausch., Bacidia umbrina var. marina Degel., Bacidia umbrina var. psotina (Fr.) Th. Fr., Bacidia umbrina var. puolannei Räsänen, Bacidia umbrina var. turgida (Körb.) Th. Fr., Bacidia umbrina var. umbrina (Ach.) Bausch, Biatora umbrina (Ach.) Tuck., Lecidea lygaea f. pelidna Ach., Lecidea pelidna (Ach.) Schaer., Lecidea pelidna f. pelidna (Ach.) Schaer., Lecidea pelidna f. turgida (Körb.) Leight., Lecidea pelidna var. pelidna (Ach.) Schaer., Lecidea pelidna var. turgida (Körb.) Leight., Lecidea umbrina Ach., Lecidea umbrina var. compacta (Körb.) Leight., Lecidea umbrina var. umbrina Ach., Scoliciosporum compactum Körb., Scoliciosporum compactum var. compactum Körb., Scoliciosporum compactum var. corticicola Hepp, Scoliciosporum compactum var. corticolum Hepp, Scoliciosporum psotinum (Fr.) Arnold, Scoliciosporum turgidum Körb., Secoliga umbrina (Ach.) Stizenb.]
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  • Greater Sonoran Desert
  • Recursos
Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Thallus: continuous, thin, ±warted or almost granular surface: ±gray, gray-green, or ±brown, without cracks Apothecia: 0.2-0.7 mm in diam., at a very early stage almost flat but soon becoming convex, sessile, without pruina disc: pale brown to brown to black, sometimes piebald margin: at first distinct, level with disc, soon excluded and reflexed, concolorous with disc proper exciple: without crystals, ± olive-brown (K-, N-), pale green (K-, N+ purple), or a mixture of both along rim and sometimes also in upper part, other parts paler epithecium: ±blue-green (K-, N+ purple), ±olive-brown (K-, N-), or a mixture of both; crystals: absent hymenium: 40-65 µm tall, colorless below; paraphyses: 1.5-2.0 µm wide in mid-hymenium; apices: mostly ±clavate or some not at all thickened, 1.5-3 µm wide hypothecium: colorless ascospores: ±acicular, spirally coiled, 17-40 x (2-)2.5-3.5 µm, 3-7-septate Pycnidia: half-immersed, black, 25-75 µm in diam. conidia: bacilliform, non-septate, 6-9 x 1 µm Spot tests: all negative Secondary metabolites: none detected. Habitat and ecology: on ± shaded, sedimentary and igneous rock from sea level to c. 2000 m; in other areas often found on pebbles or occasionally on tree-bark World distribution: North America, Europe, Asia and Africa Sonoran distribution: known from a few scattered localities in central and southeastern Arizona and coastal, southern California. Notes: On a larger geographic scale, S. umbrinum is a very variable species, particularly regarding apothecium pigmentation and thallus structure. A few doubtfully distinct taxa have been described, viz. S. ophiosporum (Hellb.) Hav. and S. perpusillum Lahm ex Körb. The Sonoran material belongs to S. umbrinum in the strict sense.
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