Slideshow image
Schaereria fuscocinerea (Nyl.) Clauzade & Roux
Family: Schaereriaceae
[Lecidea fuscocinerea Nyl.]
Schaereria fuscocinerea image
Stephen Sharnoff  
Thallus: crustose, areolate, up to 30 mm in diam., 0.15-0.35 mm thick; prothallus: black, visible along thallus margin and between areoles areoles: plane to +convex or bullate, angular, 0.2-0.8 mm in diam. upper surface: gray to red-brown to dark brown in exposed situations, rough to rarely smooth, rarely sorediate soredia: black cortex: green-gray to brown-green, 10-20 µm thick; medulla: white; algal layer 70-100 µm thick Apothecia: black, immersed initially, becoming sessile, 3-4 mm in diam. (often smaller) disc: black, flat, finally convex, dull, epruinose; margin: black, distinct and persistent, dull true exciple: distinct (sometimes becoming excluded), with a 10-25 µm thick greenish gray or greenish black to black cortex and an unpigmented, opaque medullary part (rarely dark brown), 35-75 µm thick, composed of hyphae 3.5-4.5 µm in diam. epihymenium: green, occasionally incrusted with pale blue to violet granules, sometimes totally violet (responsible for the epithets "epiiodiza" and "endocyanea") hymenium: hyaline, 60-90(-110) µm tall, I+ blue; paraphyes: branched apically, not anastomosing, 1.5-2 µm wide below, 2.5-3(-4) µm wide apically; subhymenium: hyaline, 30-55 µm thick; hypothecium: hyaline to light brown or dark brown, 60-180 µm thick asci: +cylindrical, 55-75 x 10-12 µm, 8-spored ascospores: elongate ellipsoid to broadly obpyriform, (9-)11-14(-17) x (4-)5-7(-9)µm Pycnidia: immersed conidia: cylindrical, 4-7 x 0.9-1 µm Spot tests: cortex, medulla and exciple K-, C+ pink, KC+ pink, P- Secondary metabolites: cortex and medulla with gyrophoric acid (major) and lecanoric acid (minor). Substrate and ecology: in open habitats on granites, schists and other acidic rocks World distribution: North America, Europe, Asia, Australasia, and the subantarctic islands Sonoran distribution: montane in central and SE Arizona.
Schaereria fuscocinerea image
Stephen Sharnoff  
Schaereria fuscocinerea image
Stephen Sharnoff  
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image
Schaereria fuscocinerea image