A lichen - Rhizocarpon petraeum - geograph.org.uk - 1037581

Författare/Upphovsman:

Lairich Rig

Kreditera:

From geograph.org.uk

Kort länk:

https://sewiki.info/b/a6621

Källa:

Wikimedia Commons

Upplösning:

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Beskrivning:

A lichen - Rhizocarpon petraeum. In older books, this may be listed under the synonym Rhizocarpon concentricum, a name that well describes its appearance. The concentric pattern is formed by many black dots arranged in rings; these individual dots are the spore-producing discs (apothecia). This lichen was growing on rocks in the northern half of a disused quarry: 1050247. Compare another member of this genus which presents a very different appearance: 954017.

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CC BY-SA 2.0

Licensvillkor:

Creative Commons Attribution-Share Alike 2.0