Pseudochapsa lueckingii
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Graphidales
Family: Graphidaceae
Genus: Pseudochapsa
Species:
P. lueckingii
Binomial name
Pseudochapsa lueckingii
(Kalb) Parnmen, Lücking & Lumbsch (2012)
Synonyms[1]
  • Chapsa lueckingii Kalb (2009)

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

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

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

  1. 1 2 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.
  2. ↑ "Pseudochapsa lueckingii (Kalb) Parnmen, Lücking & Lumbsch". Catalogue of Life. Species 2000: Leiden, the Netherlands. Retrieved 14 December 2022.
  3. 1 2 Kalb, Klaus (2009). "New taxa and new records of thelotremoid Graphidaceae" (PDF). Herzogia. 22: 17–42 [25].
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