Global InformationAsterothyrium atromarginatum information
| Asterothyrium atromarginatum | |
|---|---|
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Graphidales |
| Family: | Gomphillaceae |
| Genus: | Asterothyrium |
| Species: | A. atromarginatum
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| Binomial name | |
| Asterothyrium atromarginatum Herrera-Camp. & Lücking (2002)
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| Holotype site: Los Tuxtlas, Mexico[1] | |
Asterothyrium atromarginatum is a species of foliicolous (leaf-dwelling) lichen in the family Gomphillaceae .[2] Found in Veracruz, Mexico, it was formally described as a new species in 2002 by the lichenologists María de los Ángeles Herrera-Campos and Robert Lücking.[1]
The lichen forms small patches that are rounded to irregular in outline, 0.3 to 1 mm in diameter, smooth to silvery white in colour, and bordered by a distinct black line. The dark line appears to be a prothallus but is actually created by the intensely pigmented outer cells of the thallus cortex. The photobiont partner of Asterothyrium atromarginatum is a species of Trebouxia (a genus of green algae); their cells are more or less spherical and measure 6–8 μm in diameter. Asterothyrium microsporum is similar in morphology to A. atromarginatum, but its thallus lacks the black bordering line.[1]
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