Slideshow image
Schaereria spp.
Family: Schaereriaceae
Schaereria image
Stephen Sharnoff  
Life habit: lichenized Thallus: crustose to subsquamulose, warted or areolate cracked; prothallus: often well developed, black areoles: contiguous or often dispersed, convex upper surface: brown to red-brown or (often rather dark) gray, dull to slightly glossy medulla: white, I- photobiont: primary one a trebouxioid green alga, secondary one absent Ascomata: apothecial, immersed or sessile, black true exciple: persistent, with a small greenish or brownish black epihymenioid cortex and an usually unpigmented, opaque medullary part, (rarely) in section, K-, composed of +globose cells, usually without algae epihymenium: bright green, brown or partly violet in K hymenium: hyaline, I+ weakly blue (ascus walls); paraphyses: simple below, occasionally branched above, apical cells often swollen and +moniliform, lax and well separating in squash preparations; hypothecium: brown below, hyaline above (subhymenium) asci: +cylindrical or rarely clavate, Schaereria-type, thin-walled, not apically thickened, only outermost gelatinous layer I+ faint blue ascospores: hyaline, simple, +globose to ellipsoid or rarely bean-shaped, smooth, lacking a perispore Conidiomata: pycnidial, immersed conidia: bacilliform, simple, hyaline Secondary metabolites: a tridepside Geography: Northern and Southern Hemisphere, in cool to cold, mostly humid climates Substrate: acidic rocks. Notes: Schaereria is distinguished from other Lecidea s.l. groups by its thin-walled, cylindrical asci and lack of distinct apical thickening (tholus), and its thin and lax paraphyses.
Species within Pima County  
Images
not available
Map not
Available
Images
not available
Map not
Available
Image of Schaereria argentina
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available
Images
not available
Schaereria
Images
not available
Map not
Available
Images
not available
Map not
Available
Images
not available
Map not
Available
Images
not available
Schaereria
Images
not available
Map not
Available
Images
not available
Map not
Available