lecidella lichen
Lecidella viridansDescription 1
Thallus: crustose, areolate, granulose to wavy verrucose, 0.1-0.3 mm thick; prothallus: rarely present, black to gray; surface: yellowish white to creamy light gray, dull, without soredia or isidia; Apothecia: sessile, slightly to strongly constricted at base, 0.2-0.8 mm in diam.; disc: black to brown (if damaged ?), plane to convex, epruinose to scarcely pale grayish pruinose (if damaged ?); margin: indistinct, very thin, becoming excluded; exciple: brown to grayish green, without algal cells; parathecium: hyaline to sometimes pale brown, without crystals; epihymenium: brown, grayish green to olive; hymenium: hyaline, 55-65 µm tall, not inspersed; paraphyses: simple, rarely anastomosing or branched, slightly thickened apically; hypothecium: hyaline to rarely pale brown; asci: clavate, lecanoral, 8-spored; ascospores: hyaline, simple, ellipsoid, 9-13 x 5-6.5 µm; wall: thick and smooth, not halonate; Pycnidia: not seen; Spot tests: thallus surface K-, C+ yellowish red, KC+ yellowish red, P-; Secondary metabolites: 4,5-dichloronorlichexanthone, arthothelin (2,4,5-trichloronorlichexanthone), isoarthothelin (= 2,5,7trichloronorlichexanthone), and thiophanic acid (= 2,4,5,7tetrachloronorlichexanthone), in traces thuringione (= 2,4,5-trichloro-3-O-methylnorlichexanthone).; Substrate and ecology: on non-calciferous rock; World distribution: Europe, North and South America; Sonoran distribution: relatively common at intermediate elevations of Arizona, Baja California, Baja California Sur, Sonora, and Chihuahua.
Fuentes y créditos
- (c) Lichen Unlimited: Arizona State University, Tempe., algunos derechos reservados (CC BY-NC-SA), http://eol.org/data_objects/10548460
