Observation 281487: Usnea cornuta Körber

Open mixed woods with Knobcone Pine and Chinquapin on Ban Lomond Mountain
Proportionately very thick
See the usnea in the picture with the hypogymnia


Proposed Names

57% (1)
Recognized by sight: Small and shrubby usnea, though not extraordinarily dense. Unequally dichotomous branching with whitish slight constrictions at all levels of branching, giving the thick, dark green stems a somewhat “inflated” look. Papillae fairly frequent on branching, irregular in size and shape, but proportionately large. No blackened bases. Subfloridiana is similar but should have distinctly blackened bases, which this does not. Lapponica normally is thinner and has “cottony” side branches. A small scabrata would also look similar, but would lack the pale constrictions and would be expected to be paler. Hirta is typically paler, has a thinner cortex and many tiny fibrils, but no papillae. This could be glabrata, I suppose, but that species is “blackened at the base,” so this would have to be an atypical one. Esperantiana has more extensive sorediate tips, smaller papillae, and side branching that is thinner and curvier, but is very similar and would need chemistry to truly eliminate. Same goes for ceratina, which is usually larger, lacks constrictions, and has more equally dichotomous branching. See below for references. Similar looking specimens have been taken from this region or uploaded on mushroom observer. Supposedly, this is a fairly common species in Central California
Used references: California Lichens, Lichen Portal, Ways of Enlichenment, Mushroom Observer

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Created: 2017-07-09 20:23:57 MDT (-0600)
Last modified: 2017-08-18 22:47:23 MDT (-0600)
Viewed: 14 times, last viewed: 2019-08-20 13:06:10 MDT (-0600)
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