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Physcia aipolia
EOL Text
Thallus: orbicular to irregular, to 5 cm diam.; lobes: up to 2 mm broad, flat to convex, eciliate; upper surface: whitish gray to dark gray, rarely brownish gray, usually distinctly white-maculate, sometimes weakly white-pruinose; without soredia or isidia; medulla: white; lower cortex: prosoplectenchymatous with the lowermost part gradually forming rounded, isodiametric cells; lower surface: white to dark lead colored; Apothecia: usually abundant, up to 2 mm diam.; disc: often white-pruinose; ascospores: brown, 1-septate, vary from Physcia- to Pachysporaria-type, (19-) 21-25 (-28) x 9-11 (-13) µm; Pycnidia: common, immersed; conidia: subcylindrical, 4-6 x 1 µm; Spot tests: cortex and medulla K+ yellow, C-, KC-, P+ yellow; Secondary metabolites: upper cortex with atranorin; medulla with atranorin, zeorin and rarely other triterpenes.; Substrate and ecology: growing on trees in fairly open situations; World distribution: widely distributed within arctic, boreal and temperate areas of North American and Eurasia, also known from South America; Sonoran distribution: widely distributed from sea level to upper elevation montane sites from Arizona, southern California, Baja California, Baja California Sur, Chihuahua, Sonora and Sinaloa.; Notes: Some material seen from the Sonoran Region is a somewhat different from "typical" P. aipolia, but the difference is not so obvious that a new species is described. The whole pattern of variation in North America has to be studied further.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | Lichen Unlimited: Arizona State University, Tempe. 2002-2011 |
Source | http://symbiota.org/nalichens/taxa/index.php?taxon=55109 |
Canada
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
United States
Origin: Unknown/Undetermined
Regularity: Regularly occurring
Currently: Unknown/Undetermined
Confidence: Confident
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Physcia+aipolia |
In Great Britain and/or Ireland:
Lichen / parasite
pycnidium of Lichenoconium coelomycetous anamorph of Lichenoconium usneae parasitises dark brown to blackened apothecium of Physcia aipolia
Canada
Rounded National Status Rank: N5 - Secure
United States
Rounded National Status Rank: NNR - Unranked
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | McDonald, L., NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Physcia+aipolia |
Rounded Global Status Rank: G5 - Secure
Reasons: "Physica aipolia is common on exposed deciduous and cultivated trees throughout southern Canada and the United States" (Flenniken 1999).
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | McDonald, L., NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Physcia+aipolia |
Comments: See J. Thomson, 1963, The lichen genus Physcia in North America, Beihete zur Nova Hedwigia, Heft 7. Thomson provides information about many forms and subspecies but not including var. alnophila.
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | NatureServe |
Source | http://explorer.natureserve.org/servlet/NatureServe?searchName=Physcia+aipolia |