Observation 66689: Parmotrema gardneri (C.W. Dodge) Sérus.

Notes:
On Sideroxylon celastrinum bark in partial shade. Medulla is K+ weak yellowish, C-, KC+ rose. Still not sure how to distinguish this from P. dilatatum (which is supposed to have varying quantities of usnic acid in addition to the KC+ pink protocetraric acid).

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Created: 2011-05-01 08:55:44 PDT (-0700)
Last modified: 2011-05-01 09:04:35 PDT (-0700)
Viewed: 22 times, last viewed: 2017-06-09 08:07:05 PDT (-0700)
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