Observation 102513: Physconia perisidiosa (Erichsen) Moberg

When: 2012-07-20

Collection location: Millard Canyon, San Gabriel Mountains, Los Angeles Co., California, USA [Click for map]

34.2177° -118.1304° 957m

Who: Jason Hollinger (jason)

No specimen available

Notes:
HABITAT recently lightly-burned open oak forest high on north slope; SUBSTRATE bark of Quercus chrysolepis at chest height; ASPECT partly shaded; NOTES reflexed lobe tips with very coarse non-isidioid soredia under tips and margins, white and ecorticate? below with black squarrose rhizines, particularly pruinose.

There were a couple of oaks that survived the Station Fire, all covered with Physconia. I took a small sampling from all over, and was surprised to find that it was all P. perisidiosa, with only a tiny bit of P. enteroxantha mixed in on one piece.

Images

241128
20120720-47.jpg
Lobe tips and soralia, at 30x, stacked.

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Created: 2012-07-23 07:46:53 BST (+0100)
Last modified: 2012-07-23 07:46:57 BST (+0100)
Viewed: 14 times, last viewed: 2017-07-12 05:07:56 BST (+0100)
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