Gyalecta foveolaris (Ach.) Schaer.  
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Family: Gyalectaceae
[Lecidea foveolaris (Ach.) Nyl., moreLecidea foveolaris var. foveolaris (Ach.) Nyl., Lecidea foveolaris var. lutea Sommerf., Lichen foveolaris (Ach.) Wahlenb., Petractis foveolaris (Ach.) A. Massal., Secoliga foveolaris (Ach.) A. Massal., Urceolaria foveolaris Ach.]
Gyalecta foveolaris image
Troy McMullin  
  • Greater Sonoran Desert
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Nash, T.H., Ryan, B.D., Gries, C., Bungartz, F., (eds.) 2004. Lichen Flora of the Greater Sonoran Desert Region. Vol 2.
Thallus: crustose, thick to thin, sometimes disappearing, +even, continuous or finely granulose-warty, not cracked or areolate granules: sometimes tumid and intricately convoluted surface: gray-white, or olive-yellow to dirty brown, dull to +shiny, often pruinose Apothecia: abundant but scattered to less often crowded-confluent, frequent, immersed to broadly sessile, (0.4-)0.6-0.8(-2.5) mm in diam. disc: flesh-pink to orange, nearly same color as margin, shallowly to deeply concave-urceolate, epruinose margin: orange-white, sometimes overrun by the thallus, incurved, sometimes radiately streaked but not split exciple: white to flesh-pink, well developed, smooth to crenate, radiate, sometimes +tumid hymenium: hyaline, 90-140 µm tall, I+ blue; paraphyses: 1.5-2 µm wide below, with tips up to 3 µm wide; hypothecium: hyaline to pale yellow asci: cylindrical, with tip drawn out into a conical point; with uniseriate or partly biseriate spores, 6-8-spored ascospores: hyaline, transversely 3 septate, elongate-ellipsoid with rounded tips, (10-)12-16(-21)x 5-6(-7) µm Spot tests: thallus K-, C-, KC-, P- Secondary metabolites: none detected. Substrate and ecology: on mosses and soil associated with basic and serpentine rocks World distribution: circumpolar arctic-alpine in Eurasia and North America (Arctic and western mountains) Sonoran distribution: on the highest peaks in central Arizona. Notes: Gyalecta foveolaris is superficially similar to G. jenensis but its spores remain 3-septate rather than becoming muriform.
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