Observation 80909: Cladonia sulphurina (Michaux) Fr.
When: 2011-10-28
No herbarium specimen

Notes: Growing on a decayded stump of pine. C. chlorophaea group?

More than one species in the picture. If anyone recognizes the ones behind with white apothecia, I’ll make a separate obs for it…

Proposed Names

46% (2)
Eye3
Recognized by sight
56% (1)
Eyes3
Recognized by sight: tall cups, fine soredia, yellowish green color (usnic acid present), sorediate squamules

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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No problem!
By: Jason Hollinger (jason)
2011-10-28 18:21:44 CDT (-0400)

Happy to help as much as I can. Cladonia species really do love to grow together, don’t they. Both a good thing and a bad thing: makes it relatively easy to find examples of similar species growing side-by-side for comparison, for example. But it also makes it easy to find similar species growing side-by-side! :)

I don’t trust myself to distinguish C. sulphurina from C. deformis, otherwise I’d give an opinion. I’ve only once seen the two side-by-side, and even then, with Trevor Goward pointing them out to me, I still couldn’t tell the difference! But the UV test was obvious. Scratch the soredia off first to expose the medulla. Use 350 nm UV.

Thanks a lot, Jason!
By: Irene Andersson (irenea)
2011-10-28 16:03:17 CDT (-0400)

These are about 4 cm tall, and maybe the ones to the left look more typical for the species. I’ll take a closer look at descriptions of deformis and sulphurina (and botrytes vs pezizoides). When so many species of Cladonia use to grow mixed with each other, it’s certainly not easy (I suspect there might be some small chlorophaea in the lower right corner of the picture too).

The one with white apothecia
By: Jason Hollinger (jason)
2011-10-28 14:30:39 CDT (-0400)

Is a particularly pale form of C. botrytes, I think. Also consider C. pezizoides, however that species usually has conspicuous small round shell-like squamules. (And is usually quite tall.) No other species regularly has such pale apothecia.

Also consider C. deformis
By: Jason Hollinger (jason)
2011-10-28 14:27:53 CDT (-0400)

Which is a smaller version. One has UV+ medulla, the other UV-. Also C. deformis is ironically less deformed than C. sulphurina. :)

Created: 2011-10-28 11:35:56 CDT (-0400)
Last modified: 2011-10-28 14:26:18 CDT (-0400)
Viewed: 129 times, last viewed: 2016-03-31 06:22:12 CDT (-0400)
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