Pseudochapsa lueckingii
| Pseudochapsa lueckingii | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Ascomycota |
| Class: | Lecanoromycetes |
| Order: | Graphidales |
| Family: | Graphidaceae |
| Genus: | Pseudochapsa |
| Species: | P. lueckingii
|
| Binomial name | |
| Pseudochapsa lueckingii | |
| Synonyms[1] | |
| |
Pseudochapsa lueckingii is a species of corticolous (bark-dwelling), crustose lichen in the family Graphidaceae.[2] It is known only from a single collection in São Paulo, Brazil.
Taxonomy[edit]
The lichen was first formally described as a new species in 2009 by Klaus Kalb. He collected the type specimen from a dense and humid rainforest at an elevation of 800 m (2,600 ft), where it was found growing on the smooth bark of a deciduous tree. The species epithet honours his colleague Robert Lücking, "for his outstanding contributions to tropical lichenology".[3] The taxon was transferred in 2012 to Pseudochapsa, a segregate genus of Chapsa, characterised by the brown colour of its excipulum.[1]
Description[edit]
Pseudochapsa lueckingii has a smooth, olive-green thallus with a 3–10 μm-thick, hyaline cortical layer. It has large, more-or-less round apothecia measuring 0.7–2 mm in diameter with a pale brown disc covered with white pruina. Ascospores typically have between 5 and 7 transverse septa, and measure 17–25 by 6–7 μm. The lichen contains stictic acid as a major metabolite and minor amounts of constictic acid. Kalb suggests that the Panamanian species Pseudochapsa pseudoschizostoma is closely related; this species differs from P. lueckingii in lacking a cortex and in its much smaller apothecia.[3]
References[edit]
- ^ a b Parnmen, Sittiporn; Lücking, Robert; Lumbsch, H. Thorsten (2012). O’Grady, Patrick (ed.). "Phylogenetic classification at generic level in the absence of distinct phylogenetic patterns of phenotypical variation: a case study in Graphidaceae (Ascomycota)". PLOS ONE. 7 (12): e51392. doi:10.1371/journal.pone.0051392. PMC 3520900. PMID 23251515.
- ^ "Pseudochapsa lueckingii (Kalb) Parnmen, Lücking & Lumbsch". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 14 December 2022.
- ^ a b Kalb, Klaus (2009). "New taxa and new records of thelotremoid Graphidaceae" (PDF). Herzogia. 22: 17–42 [25].