Observation 208587: Candelaria pacifica M. Westb. & Arup

When: 2015-06-30

Collection location: Carrizo Plain, San Luis Obispo Co., California, USA [Click for map]

35.3892° -119.9794° 701m

Who: J-Dar

No specimen available

Collected from old wood boards at an abandoned ranch house. Thallus difficult to see, covered with soredia, apothecia biatorine. Everything K-. Not even sure if Candelariella is correct.

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I just make it look easy ;)
By: Jason Hollinger (jason)
2015-07-03 14:09:49 MDT (-0600)

Ha! Seriously, yes, for the moment, that’s it. It’d be another issue entirely if you wanted to revise the whole group and try to make sense of the insane variation present in these minutely-foliose to squamulose to subsquamulose species. I’ve seen people try in unpublished keys, but none are convincing yet.

But as for apothecia, sure, it’s not actually that uncommon in C. pacifica, once you start looking for them. Remember, presence of apothecia is a relatively useless taxonomic character: presence of soredia, however, is useful. Most sorediate species at least occasionally produce apothecia. But nonsorediate species rarely ever have sorediate forms.

That easy?
By: J-Dar
2015-07-03 14:03:01 MDT (-0600)

That’s I thought by gestalt, but for some reason I was thinking Candelaria pacifica did not have apothecia. And yes, this has soredia on the underside of the lobes, and no lower cortex.

I’d suspect Candelaria in this case
By: Jason Hollinger (jason)
2015-07-03 14:02:34 MDT (-0600)

It’s probable that Candelaria and Candelariella are paraphylletic anyway. But in particular, I bet this is actually (minutely!) foliose. In southern California, you often see populations like this that are almost entirely dissolved into granules. But if you search through, you’ll find at least some intact lobes among the sea of granules. The eastern version, Candelaria concolor, is easier to see, since its lobes usually remain more intact, complete with well-developed white lower cortex and everything. C. pacifica is much more ragged and tattered, with rudimentary at best lower cortex, usually no lower cortex at all.

Created: 2015-07-03 13:52:26 MDT (-0600)
Last modified: 2015-07-03 14:04:29 MDT (-0600)
Viewed: 32 times, last viewed: 2017-06-20 07:08:33 MDT (-0600)
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