Slideshow image
Lecanora carneolutescens Nyl.
Family: Lecanoraceae
Lecanora carneolutescens image
Thallus: crustose, continuous, verrucose, thin or thick, opaque, epruinose, ecorticate; prothallus: blackish to bluish brown surface: rough, yellowish white to yellowish gray, or white to cream colored, with an indistinct margin, sorediate soredia: farinose, 10-40 µm, in well defined, white to whitish gray soralia 0.2-0.75 mm in diam. Apothecia: sessile to constricted at the base, lecanorine disc: red-brown; or orange-brown, plane, epruinose margin: concolorous with thallus, thick to thin, persistent, even, flexuose, rough, verrucose or sorediate, without a parathecial ring amphithecium: present, with numerous algal cells, with large crystals insoluble in K, corticate; cortex: hyaline to pale yellow, indistinct, uniformly inspersed, 15-25 µm thick laterally and basally epihymenium: red-brown to orange-brown with pigment dissolving in K, with crystals dissolving in K hymenium: clear; paraphyses: with slightly thickened (up to 3 µm wide), red-brown to orange-brown tips; subhymenium: hyaline, 15-20 µm thick; hypothecium: hyaline asci: clavate, 8-spored ascospores: hyaline, simple, ellipsoid, 12.5-16 x 8.5-10.5 µm; wall: less than 1 µm thick Pycnidia: not seen Spot tests: K+ yellow, C-, KC-, P+ pale yellow Secondary metabolites: atranorin (major), chloroatranorin (minor) and zeorin (major). Substrate and ecology: on bark of deciduous trees World distribution: endemic to souhwestern North America Sonoran distribution: southern California Notes: Lecanora carneolutescens is characterized by verrucose apothecial margins, large amphithecial crystals, the granulose epihymenium, and the presence of soredia. It somewhat resembles morphotypes of Lecanora chlarotera with heavily verrucose apothecial margins, but differs in containing atranorin and zeorin and the presence of soredia.