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Pseudevernia consocians (Vainio) Hale & Culb.
Family: Parmeliaceae
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Stephen Sharnoff  
Thallus: foliose to subfruticose to caespitose, 4-10 cm across, separate, lobate lobes: linear, 0.5-1.5 mm wide, subdichotomously branched, loosely imbricate; apices: usually subtruncate, eciliate upper surface: light gray to gray, smooth, plane to rugulose, shiny or dull, weakly maculate, usually epruinose isidia: abundant, cylindrical; tips: darker than the thallus, sometimes abrading, but not sorediate; soredia absent medulla: white, loosely packed lower surface: tan to black, sometimes mottled white, naked, channeled, erhizinate, attached by basal holdfasts Apothecia: not seen Pycnidia: laminal or marginal, immersed or emergent to sessile conidia: not seen Spot tests: upper cortex K+ yellow, C-, KC-, P+ yellow; medulla K-, C+ red, KC+ red, P- Secondary metabolites: upper cortex with atranorin and chloroatranorin; medulla with lecanoric acid (major). Substrate and ecology: usually on conifers (especially pines) in open pine-oak forests World distribution: neotropics from northern Mexico to Central America Sonoran distribution: in the Sierra Madre Occidental, Chihuahua and Sinaloa, at 1500-2300 m. Notes: In comparison with the European P. furfuracea, which can also be isidiate, P. consocians is a less robust species with narrower lobes. Although both may have a C+ medulla, in P. furfuracea it is due to olivetoric acid; in P. consocians, due to lecanoric acid.
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Samuel Brinker  
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Troy McMullin  
Pseudevernia consocians image
Samuel Brinker  
Pseudevernia consocians image
Troy McMullin  
Pseudevernia consocians image
Samuel Brinker  
Pseudevernia consocians image
Stephen Sharnoff  
Pseudevernia consocians image
Stephen Sharnoff  
Pseudevernia consocians image
Stephen Sharnoff  
Pseudevernia consocians image
Stephen Sharnoff  
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Linda Phillips  
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Gary Perlmutter  
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Linda Phillips  
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Pseudevernia consocians image