Verrucaria nigrescens

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Verrucaria nigrescens
Verrucaria nigrescens 080408.jpg
Scientific classification edit
Kingdom: Fungi
Division: Ascomycota
Class: Eurotiomycetes
Order: Verrucariales
Family: Verrucariaceae
Genus: Verrucaria
Species:
V. nigrescens
Binomial name
Verrucaria nigrescens
Pers. (1795)

Verrucaria nigrescens is a widespread species of crustose lichen in the family Verrucariaceae. It was first formally described as a new species by Christiaan Hendrik Persoon in 1795.[1] The lichen produces a very dark brown thallus that grows on rocks; the medulla is black. There are black perithecia that resemble buried dots, and which measure 0.15–0.3 mm in diameter. Ascospores measure 14–24 by 7–11 μm.[2]

References[]

  1. ^ Persoon, C.H. (1795). Botanische Beobachtungen. Usteri's Annalen der Botanik (in German). Vol. 14. Leipzig: Peter Philip Wolfischen Buchhandlung. p. 36.
  2. ^ Brodo, Irwin M.; Sharnoff, Sylvia Duran; Sharnoff, Stephen (2001). Lichens of North America. Yale University Press. p. 728. ISBN 978-0300082494.


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