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Leptogium corticola (Taylor) Tuck.
Family: Collemataceae
[Collema corticola Taylor]
Leptogium corticola image
Stephen Sharnoff  
Thallus: foliose, 2-8 cm in diam., loosely adnate, irregularly lobate lobes: irregular, elongate, plane but inrolled apically, separate, 2-10 mm wide, 125-300 µm thick; apices: rotund, entire, often upturned upper surface: medium gray, usually dull, strongly irregularly wrinkled, not isidiate internal anatomy: with upper and lower cortices consisting of a single layer of irregularly isodiametrical cells 3-10 µm in diam., internally with loosely interwoven chains of Nostoc and hyphae lower surface: light gray, smooth to wrinkled, with scattered tufts of white hairs Apothecia: common, laminal, sessile, 0.5-2 mm wide disc: brown to dark red-brown, concave to plane to convex margin: thalline, concolorous with the thallus or cream-colored, often wrinkled exciple: euparaplectenchymatous, 45-90 µm thick centrally hymenium: hyaline below and thinly yellow to brown above, 90-150 µm tall; paraphyses: unbranched, 2-3 µm wide, slightly inflated apically; subhymenium: pale yellow, 35-70 µm thick asci: cylindrico-clavate, 8-spored ascospores: hyaline, submuriform, 3-5-septate transversely, 0-1-septate longitudinally, ellipsoid to slightly subfusiform, 30-56 x 10-20 µm Pycnidia: not observed Spot tests: all negative Secondary metabolites: none detected. Substrate and ecology: usually on bark of various deciduous trees, rarely on rocks World distribution: especially common in eastern North America, the Adriatic region of Europe, and Australasia Sonoran distribution: Chihuahua and southern part of the Sonoran range in Sinaloa. Note: Leptogium corticola is another example of a species occurring in eastern North America, that apparently follows the Sierra Madre Oriental southwards and the Sierra Madre Occidental northwards into the Sonoran region.
Leptogium corticola image
Samuel Brinker  
Leptogium corticola image
Troy McMullin  
Leptogium corticola image
Troy McMullin  
Leptogium corticola image
Troy McMullin  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Stephen Sharnoff  
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Gary Perlmutter  
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Samuel Brinker  
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Gary Perlmutter  
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image
Leptogium corticola image