Observation 62876: Lichen P. Micheli
When: 2011-01-28
No herbarium specimen
0 Sequences

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Recognized by sight

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By: Jason Hollinger (jason)
2011-01-29 06:40:36 GMT (+0000)

Orange to yellow lichens like this are either Xanthoria (or the segregate genus Xanthomendoza) or Candelaria. Xanthoria is typically oranger, reacts K+ instantly deep red (drop of household lye will work), and has distinctive “polarlocular” spores (two cells, with perforated thickened septum). Candelaria is yellower, is K- (or maybe K+ slightly reddish), and has simple spores.

If Candelaria, try C. fibrosa. If Xanthoria, there are many similar species. Try X. hasseana, X. oregana, X. montana or maybe X. ulophyllodes.

Created: 2011-01-29 00:02:16 GMT (+0000)
Last modified: 2011-01-29 06:33:10 GMT (+0000)
Viewed: 35 times, last viewed: 2017-06-08 14:28:32 BST (+0100)
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