Observation 69903: Caloplaca Th. Fr.

When: 2011-06-22

Collection location: Davis, California, USA [Click for map]

Who: Byrain

No specimen available

Growing on a curb at a bus stop.

Proposed Names

28% (1)
Recognized by sight
47% (1)
Recognized by sight: As Jason mentioned, something like Caloplaca ignea:
This group is due for a taxonomic overhaul, so who knows what genus it might be in after another 5 years!

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thanks Brendan
By: Byrain
2011-07-31 00:48:42 EDT (-0400)

For the recent input on my observations. I’ve been keeping my eyes up for more and found it once more since, but those specimens were no older and all beat up.

I can comment…
By: Jason Hollinger (jason)
2011-06-30 10:43:23 EDT (-0400)

… but not usefully! I don’t know what to do with the group:

Xanthoria elegans
Caloplaca ignea
Caloplaca tracyphylla

There might be other species, too (is C. saxicola another look-alike?)

I really need to study the group more before I can say anything helpful. All I know right now is that where you are you can expect all three. Sidewalk curbs are concrete (obviously!) therefore calcareous, again not ruling anything out.

a second opinion
By: Chris Parrish (kitparrish)
2011-06-23 16:00:52 EDT (-0400)

Hard to tell for me too, since I have not actually seen live Caloplaca ignea yet, and I don’t really know if it is at all likely to turn up on sidewalks. I expect that Jason has seen lots of it, and he may be able to comment on it in a few days.

By: Byrain
2011-06-23 15:27:06 EDT (-0400)

There were three small formotions of this lichen at this spot, since the curb was right around a corner where a bus may turn into and not see anyone who was there I only took pictures of one. If my memory serves me right, all three were tightly oppressed and looking at pictures, Xanthoria elegans strikes me as a little different then this, but its hard to tell for me.

By: Chris Parrish (kitparrish)
2011-06-23 03:16:02 EDT (-0400)

This may be Caloplaca ignea because the lobes are rather smooth and pressed right down against the substrate, which it is obliged to do because it lacks a lower cortex. Xanthoria elegans is similar, but the lobes are more irregular and can even lift themselves above the substrate to some degree since they do have a lower cortex. Compare this photo with MO Observation 152287.

Created: 2011-06-23 00:41:03 EDT (-0400)
Last modified: 2011-07-31 00:14:50 EDT (-0400)
Viewed: 157 times, last viewed: 2017-06-09 16:04:02 EDT (-0400)
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