Observation 104382: Placidium lachneum (Ach.) Breuss

When: 2012-07-29

Collection location: Lourinhã, Portugal [Click for map]

Who: zaca

No specimen available

It took sometime but at the end I think to have reached the right classification for this one. Let’s hope so.
The specimen grew on the soil, has a squamulose thallus with perithecia immersed in the squamules. The brown-redish squamules of approximate size of 7 mm are mostly more or less roundish, some more elongated, and have at the margins abundant black globose pycnidia. These features lead me to the species Placidium lachneum, though I didn’t observe the spores, using the key and the description of this species in the British Flora. I also saw the photos in Sharnoff photos and found them very similar to those of my specimen.

Proposed Names

58% (1)
Eye3 Eyes3
Used references: Smith et al., The Lichens of Great Britain and Ireland, The British Lichen Society, 2009.
Based on microscopic features

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2012-08-08 16:27:03 MST (-0700)
Last modified: 2012-08-08 16:27:04 MST (-0700)
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