| Astrothelium pseudannulare | |
|---|---|
Scientific classification | |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Dothideomycetes |
| Order: | Trypetheliales |
| Family: | Trypetheliaceae |
| Genus: | Astrothelium |
| Species: | A. pseudannulare |
| Binomial name | |
| Astrothelium pseudannulare Aptroot & Etayo (2016) | |
Astrothelium pseudannulare is a species ofcorticolous (bark-dwelling),crustose lichen in the familyTrypetheliaceae.[1] Found inEcuador, it wasformally described as a new species in 2016 by Dutch lichenologistsAndré Aptroot and Javier Etayo. Thetype specimen was collected from thePodocarpus National Park (Loja Province) at an altitude of 3,000 m (9,800 ft); there, it was found in amontane forest growing on smooth tree bark. The lichen has a smooth and shiny, olive-greenthallus comprising patches ofcortex that break through the host bark, covering areas about 1.0 to 3.5 mm in diameter. Nolichen products were detected from collected samples of the lichen usingthin-layer chromatography.[2] The combination of characteristics of the lichen that distinguish it from others inAstrothelium are the rough thallus; the distribution of theascomata, which ranges from solitary to irregularly confluent; and the form of the ascomata, which ranges from prominent tosessile.[3] Theascospores arehyaline, spindle-shaped (fusiform), and have threesepta; they measure 62–80 by 20–25 μm. Thespecies epithetpseudannulare alludes to its resemblance toAstrothelium annulare, another species with large 3-septate spores.[2]
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