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Candelaria fibrosa (Fr.) Mull. Arg.
Family: Candelariaceae
Candelaria fibrosa image
Stephen Sharnoff  
Thallus: small foliose, up to 4 cm wide, adnate, lobate lobes: dorsiventral, imbricate, c. 0.5-2 mm wide, often with secondary lobes, margin ± crenulate upper surface: lemon yellow to mustard yellow, smooth to somewhat wrinkled; soredia and isidia: absent upper cortex: c. 5-20 µm thick medulla: white, thin lower cortex: c. 10-35 µm thick lower surface: white to pinkish, white; rhizines: abundant, simple Apothecia: common, laminal, sessile, up 2 mm diam.; margin: smooth, often with white or yellow cilia; disc: darker yellow than the thallus; epithecium: c. 10 µm thick; hymenium: c. 60-90 µm tall; paraphyses: simple or branched near the tips, cylindrical to submoniliform with up to 5 µm wide tips; hypothecium: 30-45 µm thick asci: clavate, >30-spored ascospores: uni- or biguttulate, colorless, 7-11 x 4-6 µm Pycnidia: common, immersed, concolorous with upper surface or slightly darker conidia: ellipsoid, to narrowly ellipsoid 2-3.5 x 1.5 µm Spot tests: upper surface K- (or + deeper yellow), C-, KC-, P-; medulla K-, C-, KC-, P- Secondary metabolites: calycin (major) and pulvinic dilactone (minor). Habitat and ecology: on bark, often in very humid microclimates, such as martime regions World distribution: pantropical and extending into some warm temperate regions Sonoran distribution: in oak forests up to at least 2000 m in southern Arizona, Chihuahua and Sinaloa. Notes: This species is characterized by the lack of soredia or isidia.
Candelaria fibrosa image
Gary Perlmutter  
Candelaria fibrosa image
Stephen Sharnoff  
Candelaria fibrosa image
Lynda Miller  
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Lynda Miller  
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image
Candelaria fibrosa image