Pertusaria diluta

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Taxonavigation: Pertusariales 

Superregnum: Eukaryota
Regnum: Fungi
Subregnum: Dikarya
Divisio: Ascomycota
Subdivisio: Pezizomycotina
Classis: Lecanoromycetes
Subclassis: Ostropomycetidae
Ordo: Pertusariales

Familia: Pertusariaceae
Genus: Pertusaria
Species: Pertusaria diluta


Pertusaria diluta Björk, G.Thor & T.B.Wheeler, 2009

MycoBank Accession Number: MB 511753

Type locality: U.S.A. Montana: Cabinet Mountains, East Fork Bull River, St. Paul Lake trailhead, 48o07'18"N, 11548o42'00"W, on bark of medium-sized Thuja plicata in old growth forest, with Micarea cinerea, 895 m, 28 Jul 2006, Spribille 20890 & S. Pérez-Ortega (holotype CANL, isotypes CANB, UPS)

Etymology: Named for the pastel, washed-out colors of the thallus and apothecia.

Habitat and distribution: Pertusaria diluta has been found exclusively in old-growth forests. Specimens were collected from bark of trunks, branches and fine twigs of Tsuga heterophylla in ultra-humid rain forest habitats, on bark and mosses over bark on Thuja plicata, on bark of Pseudotsuga menziesii, on fine twigs of Tsuga heterophylla, and on wood of fallen logs, where it was associated with Abconditella lignicola and Lichinodium sirosiphoideum.


  • Björk, G. Thor & T.B. Wheeler, Bryologist 112 (1): 126 (2009)
  • Spribille, T.; Björk, C.R.; Ekman, S.; Elix, J.A.; Goward, T.; Printzen, C.; Tønsberg, T. and Wheeler, T. 2009: Contributions to an epiphytic lichen flora of northwest North America: I. Eight new species from British Columbia inland rain forests. - The Bryologist 112 (1): 109–137.   **[RLL List # 214 / Rec.# 31494] - (Recent Literature on Lichens)**   (JSTOR)   (Pertusaria diluta: pp. 126-129) (Color photos, page 127, habit: figs. 9A & 9B; section through 2 apothecia: fig. 9C; upper third of paraphysoids: fig. 9D; ascus apex: fig. 9E; Ascospores: fig. 9E) (Distribution map: p. 133, fig. 12)


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