Usnea vainioi

Usnea vainioi is a rare species of beard lichen in the family Parmeliaceae found in the southeastern United States. It was described as a new species in 1936 by Polish lichenologist Józef Motyka.[1] The specific epithet honours Finnish lichenologist Edvard August Vainio.[2] The lichen contains (in addition to usnic acid) diffractaic acid as the main secondary compound.[3]

Usnea vainioi
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Lecanorales
Family: Parmeliaceae
Genus: Usnea
Species:
U. vainioi
Binomial name
Usnea vainioi
Motyka (1936)

Usnea vainioi grows in clusters or tufts, sometimes hanging from its substrate by a single holdfast, and is up to 12 cm (4.7 in) long. Its lateral branches are up to 8 cm (3.1 in) long, although they more typically are in the range 3 to 5 cm (1.2 to 2.0 in). The cortex is green, while the medulla, which has a central cavity, is more variable in color – typically red and white with tinges of yellow.[4]

Because the type collection of Usnea vainioi was a mixed collection containing thalli both with and without soredia, a sorediate thallus was selected as the lectotype of the species by Roderick Rogers and G. Nell Stevens in a 1988 publication.[3]

References
  1. Motyka, Józef (1936). Lichenum generis Usnea studium monographicum (in Latin). Vol. 1. Leopoli. pp. 51, 67.{{cite book}}: CS1 maint: location missing publisher (link)
  2. Hertel, Hannes; Gärtner, Georg; Lőkös, László (2017). "Forscher an Österreichs Flechtenflora" [Investigators of Austria's lichen flora] (PDF). Stapfia (in German). 104 (2): 156–157. ISSN 0252-192X.
  3. Rogers, R.W.; Stevens, G.N. (1988). "The Usnea baileyi complex (Parmeliaceae, Lichenised Ascomycetes) in Australia". Australian Systematic Botany. 1 (4): 355–361. doi:10.1071/SB9880355.
  4. Moore, Barbara Jo (1968). "The macrolichen flora of Florida". The Bryologist. 71 (3): 243. doi:10.2307/3240692. JSTOR 3240692.
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