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Verrucaria glaucovirens Grummann  
Family: Verrucariaceae
[Amphoridium virens (Nyl.) J. Nowak & Tobol., moreLithoicea virens Flagey, Verrucaria virens Nyl.]
Verrucaria glaucovirens image
Gerhard Neuwirth
  • Greater Sonoran Desert
  • Resources
Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2007. Lichen Flora of the Greater Sonoran Desert Region. Vol 3.
Thallus: determinate, cracked-areolate, 0.4-0.6 mm thick, with broad fissures, without a black basal layer, with a thick and abrupt margin, without a visible prothallus areoles: subangular in outline, plane, 0.5-1.5 mm wide, secondarily subdivided into smaller units which may overlap each other in 2-3 horizons, slightly constricted at base, with pale flanks surface: brown, dull, uneven to verrucose anatomy: with a poorly defined upper cortex but paraplectanchymatous throughout, overlain with a thin epinecralic layer, uppermost cell layer pale brown; with algal cells 6-10 µm in diam. distributed throughout most of thallus or concentrated in upper half, mycobiont cells 4-7 µm in diam. Perithecia: several per areole, arising in lower parts of the areoles, finally with apices appearing at the surface, but hardly protruding; exciple: subglobose or ellipsoid, 0.15-0.25 mm wide, colorless to brown, apically black, 15-20 µm thick; involucrellum: lacking; periphyses c. 20 µm long, simple asci: clavate, 8-spored ascospores: hyaline, simple, ellipsoid, 17-20 x 8-10 µm Pycnidia: unknown Spot tests: all negative Secondary metabolites: none detected. Substrate and ecology: epilithic, on sandstone World distribution: Europe, Algeria, and North America Sonoran distribution: known only from two samples from northern Arizona (Coconino Co.). Notes: The circumscription of the species follows Vainio (1921). So named herbarium material differs considerably and seems to represent several other species.
Verrucaria glaucovirens
Open Interactive Map
Verrucaria glaucovirens image
Othmar Breuss
Verrucaria glaucovirens image
Verrucaria glaucovirens image
Verrucaria glaucovirens image
Verrucaria glaucovirens image
Jason Hollinger
Verrucaria glaucovirens image
Verrucaria glaucovirens image
Verrucaria glaucovirens image
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This project made possible by National Science Foundation Awards: #1115116, #2001500, #2001394
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