Acanthothecis submuriformis | |
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Scientific classification
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Domain: | Eukaryota |
Kingdom: | Fungi |
Division: | Ascomycota |
Class: | Lecanoromycetes |
Order: | Graphidales |
Family: | Graphidaceae |
Genus: | Acanthothecis |
Species: | A. submuriformis
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Binomial name | |
Acanthothecis submuriformis |
Acanthothecis submuriformis is a species of corticolous (bark-dwelling) lichen in the family Graphidaceae. Found in Brazil, it was formally described as a new species in 2022 by André Aptroot, Robert Lücking, and Marcela Eugenia da Silva M.Cáceres. The type specimen was collected from the Parque Natural Municipal ( Porto Velho, Rondônia); here the lichen was found growing on tree bark in primary rainforest.
It has a smooth, ochraceous white thallus lacking a cortex and lacking a prothallus. Its asci are 8-spored, and its ascospores are hyaline, measuring 29–31 by 6–8 μm. The specific epithet refers to the submuriform (somewhat chambered) spores; all spores have between 7 and 9 transverse septa, but of the 8 spores in the ascus, only about 2 have a longitudinal septum. [1]
Acanthothecis submuriformis contains lichexanthone, a lichen product that causes the thallus and ascomata margins to fluoresce yellow when lit with a long-wavelength UV light. This species and Acanthothecis tetraphora are the only species in genus Acanthothecis known to produce lichexanthone. [1]