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Peltigera malacea (Ach.) Funck
Family: Peltigeraceae
[Peltidea canina var. malacea (Ach.) Wahlenb.,  more]
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Stephen Sharnoff  
Thallus: foliose, large, 5-10(-15) cm in diam., adnate lobes: +flattened and elongate (up to 3 cm wide and up to 4 cm long), often dichotomously branched, imbricate or separate; tips: rounded to subtruncate, often ascending and undulate upper surface: brown but with a bluish tinge when dry, deep bluish green to olive green when wet, smooth, dull, thinly scabrid-tomentose with small, erect hairs especially towards margin, without isidia or soredia medulla: white, with +loosely interwoven hyphae photobiont: Nostoc lower surface: whitish or pale tan, +uniformly tomentose, veins and rhizines almost absent, pale interstices few or absent Apothecia: frequent, +round, sessile, marginal, up to 7 mm in diam.; margin: smooth to crenulate disc: flat, red-brown to brown, smooth ascospores: colorless to pale brown, elongate fusiform, 3-5 septate, 55-70 x 5-6 ┬Ám Pycnidia: not seen in Sonoran material Spot tests: all negative Secondary metabolites: tenuiorin, methyl gyrophorate, gyrophoric acid and unidentified terpenoids. Substrate and ecology: among mosses over soil in moist habitats at relatively high elevations World distribution: temperate and boreal regions of North America, Europe and Asia Sonoran distribution: infrequent at higher elevations in Arizona. Notes: Thick thalli with erect tomentum at least marginally and a non-veined lower surface characterize P. malacea and help to distuinguish it from e.g. P. elisabethae and P. neckeri, both of which have a glossy non-tomentose upper surface. When moist, it has a characteristic blue-green color.
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Lucy Taylor  
Peltigera malacea image
Stephen Sharnoff  
Peltigera malacea image
Stephen Sharnoff  
Peltigera malacea image
Stephen Sharnoff  
Peltigera malacea image
Stephen Sharnoff  
Peltigera malacea image
Stephen Sharnoff  
Peltigera malacea image
Stephen Sharnoff  
Peltigera malacea image
Stephen Sharnoff  
Peltigera malacea image
Stephen Sharnoff  
Peltigera malacea image
Troy McMullin  
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