Observation 132638: Arthonia Ach.

When: 2013-04-28

Collection location: Pogonip Open Space Reserve, Santa Cruz, California, USA [Click for map]

Who: Thomas Laxton (Tao)

No specimen available

Proposed Names

31% (2)
Recognized by sight
-37% (3)
Recognized by sight: Red-orange flat lichen.
41% (3)
Recognized by sight: Bloody comma lichen
This is a very variable but distinctive species. Identifiable by thalli colors and growth pattern. Seldom seen far from the coast and a good one to learn. Feel free to look up info on it. The other red tree lichens in CA have very different structures, mostly caloplaca-like.
Used references: California Lichens
56% (1)
Recognized by sight: A. cinnabarina has red apothecia; Here some specimens, namely the first, have blackish apothecia.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Not sure what this is
By: Jason Hollinger (jason)
2014-02-07 13:40:46 PST (-0800)

But you can rule out Herpothallon / Cryptothecia because it doesn’t have a thick fluffy noncorticate thallus. This looks more like a Pyrenula or maybe Arthonia (Arthothelium?) to me.

Created: 2013-04-28 20:31:05 PDT (-0700)
Last modified: 2017-08-14 09:54:30 PDT (-0700)
Viewed: 60 times, last viewed: 2017-08-31 19:58:59 PDT (-0700)
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