Observation 97849: Dimelaena oreina (Ach.) Norman

When: 2012-06-03

Collection location: Madera Canyon, Santa Rita Mountains, Pima Co., Arizona, USA [Click for map]


Who: Ivan Rodriguez (Ivan Rodriguez)

No specimen available

I’m no expert on lichens; I have a faintest clue how to identify them and don’t have a guide to the ones of the area.



Proposed Names

59% (2)
Recognized by sight
61% (2)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Ivan Rodriguez (Ivan Rodriguez)
2012-06-20 18:52:00 PDT (-0700)

As far as I can tell, that seems to be it. The pale color might be due to the intense winter combined with a profound drought in the area while I observed this specimen. Thank you for the help with identification.

Distinctive “clean” look
By: Jason Hollinger (jason)
2012-06-20 16:47:33 PDT (-0700)

Dimelaena is one of the few genera I felt comfortable identifying in the field right from the start. There are several species in the southwest, but apparently only D. oreina is known from southeastern Arizona. This is paler/grayer than typical. It usually has a distinctly yellowish/milky cast to it (from usnic acid: KC+ gold).

Created: 2012-06-20 14:19:45 PDT (-0700)
Last modified: 2012-06-20 18:50:20 PDT (-0700)
Viewed: 29 times, last viewed: 2017-06-13 01:41:28 PDT (-0700)
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