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Cyphelium lucidum (Th. Fr.) Th. Fr.
Family: Caliciaceae
Cyphelium lucidum image
Stephen Sharnoff  
Thallus: warty areolate or subareolate, the marginal areoles somewhat lobe-like and crenate surface: bright yellow cortex: 9-13 µm thick, consisting of minute isodiametric cells 2-3 µm in diam., covering an even photobiont layer, densely inspersed with minute yellow crystals of vulpinic acid Apothecia: yellow pruinose, 0.5-1 mm in diam.; margin: distinctly yellow pruinose exciple: 28-50 µm thick laterally, consisting of strongly sclerotized, interwoven hypha, blackish brown, thick, strongly thickened at base, not well delimited from the convex hypothecium and exciple: up to 225 µm thick in the central part asci: clavate, 23-27 x 3-4 µm with uniseriately arranged spores ascospores: brown, 1-septate and constricted in the middle, ellipsoid, 17-22 x 8-10 µm; surface: smooth in young spores surface but developing deep, irregular fissures but without striations resulting in a rimose-areolate appearance and very irregular outline in mature spores Pycnidia: not observed Spot tests: thallus K-, C-, KC-, P- Secondary metabolites: thallus with vulpinic acid. Substrate and ecology: on trunks and wood of conifers (Abies, Larix and Picea) in old mountain forests World distribution: Europe and North America Sonoran distribution: Arizona and California. Notes: Cyphelium lucidum is characterized by its golden yellow thallus with small crenulate lobes at the edge, its yellow-pruinose apothecia, and its coarsely ornamented spores.
Cyphelium lucidum image
Stephen Sharnoff  
Cyphelium lucidum image
Stephen Sharnoff  
Cyphelium lucidum image
Stephen Sharnoff  
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image
Cyphelium lucidum image