Placidium

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Placidium
Placidium lacinulatum Plouharnel 2010-01-16 24.jpg
Placidium lacinulatum
Scientific classification
Kingdom:
Fungi
Division:
Ascomycota
Class:
Eurotiomycetes
Subclass:
Chaetothyriomycetidae
Order:
Verrucariales
Family:
Verrucariaceae
Genus:
Placidium

A. Massal.

Placidium is a genus of crustose to squamulose to almost foliose lichens. The genus is in the Verrucariaceae family.[1] Most members grow on soil (are terricolous), but some grow on rock (saxicolous).[2] The fruiting bodies are perithecia, flask-like structures immersed in the lichen body (thallus) with only the top opening visible, dotting the thallus.[2]

Members of the genus are commonly called stiplescale lichens or earthscale.[2]: 327 

Lichen spot tests are all negative.[2]

Members of the genus lack rhizines, but otherwise resemble members of the genus .[2]

Species[]

References[]

  1. ^ Lumbsch TH, Huhndorf SM. (December 2007). "Outline of Ascomycota – 2007". Myconet. Chicago, USA: The Field Museum, Department of Botany. 13: 1–58.
  2. ^ a b c d e Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014, ISBN 978-0-300-19500-2

External links[]


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