Observation 50473: Cladina rangiferina (L.) Nyl.

When: 2010-08-16

Collection location: Forest near Elgin St., Pembroke, Ontario, Canada [Click for map]

45.808356° -77.139076°

Who: Paul Derbyshire (Twizzler)

No specimen available

Zone 19, as always, is full of this stuff.

Proposed Names

57% (1)
Eye3 Eyes3
Recognized by sight
28% (1)
Recognized by sight

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Add Comment
By: Jason Hollinger (jason)
2010-08-16 23:06:56 PDT (-0700)

The greener one should theoretically be C. mitis, since it has usnic acid. C. rangiferina has atranorin instead. The others to look for are C. arbuscula (which is now considered just morphological variation of C. mitis I think) and C. stellaris. But the last one should form compact densely-branched heads. Or so I’ve read. I would love to see it some day. It may grow in different habitat from C. mitis/C. arbuscula and C. rangiferina (which do often grow together, sometimes even all jumbled up together). Hey, I think this is cool: I read somewhere that sometimes multiple thalli, even from separate species, can grow together (“anastomose” I think? wish I remember these sorts of things better! :) into a single thallus. What does a taxonomist do with that mess, eh?

I think
By: Paul Derbyshire (Twizzler)
2010-08-16 22:58:24 PDT (-0700)

both species occur in that one area. One looks greener than the other. It’s even possible both are present in this photo.

May be Cladina mitis
By: Jason Hollinger (jason)
2010-08-16 22:42:51 PDT (-0700)

It does have some “windswept” branch tips like C. rangiferina, but there are a lot of gaping axils with lots of branches radiating from them. That’s a C. mitis thing (in my very limited experience at least). C. rangiferina should only have branches in 2’s and 3’s. You should have both species, I think.

Created: 2010-08-16 17:10:02 PDT (-0700)
Last modified: 2010-08-16 22:39:43 PDT (-0700)
Viewed: 25 times, last viewed: 2016-03-24 04:12:15 PDT (-0700)
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