Observation 102500: Candelariella rosulans (Mull. Arg) Zahlbr.
When: 2012-07-20
(34.2259° -118.1297° 1057m)
No herbarium specimen

Notes: HABITAT hardwood forest on top of small hill in bottom of steep valley; SUBSTRATE siliceous rock and thin mineral soil over rock, frequently growing over other nearby lichens; ASPECT partly sunny; NOTES thallus subcoralloid with nearly terete branching minute lobes, nearly entirely sterile but for one apothecium with incomplete thalline margin, K-; SPORES 8 per ascus, oblong to slightly bent, ~15 × 5 µm.

This is the typical form in chaparral of the San Gabriel Mountains, it seems. I’m not sure why, but it is very rarely fertile, and nearly coralloid. But happily I was actually able to locate an apothecium for the first time ever in material from this area.

Images

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20120720-17.jpg
Large sterile squamulose colony.
241088
20120720-15.jpg
Subcoralloid form.

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Created: 2012-07-23 02:12:51 CDT (-0400)
Last modified: 2012-07-23 02:12:55 CDT (-0400)
Viewed: 28 times, last viewed: 2016-10-25 20:32:04 CDT (-0400)
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