Phaeographis xanthonica
| Phaeographis xanthonica | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Graphidales |
| Family: | Graphidaceae |
| Genus: | Phaeographis |
| Species: | P. xanthonica
|
| Binomial name | |
| Phaeographis xanthonica Kalb & Matthes-Leicht (2009)
| |
| |
| Holotype site: Itatiaia, Brazil[1] | |
Phaeographis xanthonica is a species of corticolous (bark-dwelling), crustose lichen in the family Graphidaceae.[2] Found in Brazil, it was formally described as a new species in 2009 by Klaus Kalb and M. Matthes-Leicht. The species epithet refers to the presence of the xanthone substance lichexanthone. The type specimen was collected in Itatiaia (Serra da Mantiqueira, Rio de Janeiro) at an altitude of 1,750 m (5,740 ft). It has also been recorded from Costa Rica.[1]
The thallus of Phaeographis xanthonica is smooth, matt, whitish-grey to whitish-beige, and lacks a prothallus. Its ascomata are lirelline in form, curved with tapered ends, and measure 0.5–4 mm long. The discs are black and bordered by a somewhat thick and split thalline margin. The ascospores have a transverse septum that divides it into four cells; their dimensions fall into the range 11–21 by 5–7 μm.[1]
References
[edit]- ^ a b c Kalb, Klaus; Archer, Alan W.; Sutjaritturakan, Jutarat; Boonpragob, Kansri (2009). "Further new species of Xanthoparmelia (Parmeliaceae, Ascomycota) from Tasmania". In Aptroot, A.; Seaward, M.R.D.; Sparrius, L.B. (eds.). Biodiversity and Ecology of Lichens – Liber Amicorum Harrie Sipman. Bibliotheca Lichenologica. Vol. 99. Berlin/Stuttgart: J. Cramer. pp. 225–246. ISBN 978-3-443-58078-0.
- ^ "Phaeographis xanthonica Kalb & Matthes-Leicht". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 22 December 2023.