Biology:Astrothelium flavostromatum
| Astrothelium flavostromatum | |
|---|---|
Scientific classification 
| |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Dothideomycetes |
| Order: | Trypetheliales |
| Family: | Trypetheliaceae |
| Genus: | Astrothelium |
| Species: | A. flavostromatum
|
| Binomial name | |
| Astrothelium flavostromatum Aptroot & M.Cáceres (2016)
| |
Astrothelium flavostromatum is a species of crustose lichen-forming fungus in the family Trypetheliaceae.[1] It was formally described as new to science by André Aptroot and Marcela Cáceres, based on material collected in Brazil (Rondônia state) in the Parque Natural Municipal de Porto Velho, near rainforest. The lichen grows on tree bark and forms a continuous, somewhat shiny, olive-green to olive-gray thallus that can cover patches up to about 5 cm (2 in) across. The surface is characteristically blistered ([[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]) and can cause gall-like swellings in the host bark.[2]
The fruiting bodies are [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] and are grouped within cream-coloured [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]] that are often linear to irregular and may form a net-like pattern on the thallus. The pseudostromata may be dusted with yellow [[Glossary of lichen terms#{{biology:{1}}}|{{Biology:{1}}}]]. Spores are hyaline, three-septate, and spindle-shaped, measuring about 23–25 × 9–10 μm, and are surrounded by a thin gelatinous layer. No pycnidia have been observed. Chemical tests indicate UV-negative thallus tissues but UV-positive (pink to orange) pseudostromata, with a K (potassium hydroxide solution) reaction turning pigmented parts blood red. Thin-layer chromatography detected an anthraquinone, probably parietin. A. flavostromatum is known only from Brazil and is most similar to Astrothelium aeneoides, from which it differs mainly in its blistered thallus and cream pseudostromata.[2] No additional collections had been reported from Brazil as of 2025.[3]
See also
- List of lichens of Brazil
References
- ↑ "Astrothelium flavostromatum Aptroot & M. Cáceres". Species 2000: Leiden, the Netherlands. https://www.catalogueoflife.org/data/taxon/5W85G.
- ↑ 2.0 2.1 Aptroot, André; Cáceres, Marcela Eugenia da Silva (2016). "New Trypetheliaceae from the Amazon basin in Rondônia (Brazil), the centre of diversity of the genus Astrothelium". The Lichenologist 48 (6): 693–712. doi:10.1017/s0024282915000584. https://www.researchgate.net/publication/311503074.
- ↑ Aptroot, André; da Silva Cáceres, Marcela Eugenia; dos Santos, Lidiane Alves; Benatti, Michel N.; Canêz, Luciana; Forno, Manuela Dal; Feuerstein, Shirley C.; Vidigal Fraga Junior, Carlos Augusto et al. (2025). "The Brazilian lichen checklist: 4,828 accepted taxa constitute a country-level world record". The Bryologist 128 (2): 96–423 [130]. doi:10.1639/0007-2745-128.2.96.
Wikidata ☰ Q107503762 entry
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