Collection location: Buttonwood, south Key Largo, Monroe Co., Florida, USA [Click for map]
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I’ve been using Harris’s More Florida Lichens for all my Florida material, but this one just doesn’t key out any way I dice it. It looks like a Collema with the dull olive lobes and thickened margins and thick globular isidia, yet the only two Collema in More Florida Lichens with broad lobes and isidia at all are C. furfuraceum (clearly not!) and C. subflaccidum (should have thin margins and is doubtful this far south) Leptogium is even farther off. It looks most like a very broad-lobed C. fuscovirens, but that should be saxicolous and northern temperate to boreal (and smaller-lobed). C. flaccidum should have flattened isidia. Best I can figure is it is a form of C. nigrescens with abundant isidia and no apothecia (according to the Sonoran Flora such forms do exist, and the species is known to occur in southern Florida).
Created: 2011-01-21 19:11:13 PST (-0800)
Last modified: 2011-06-14 10:56:17 PDT (-0700)
Viewed: 90 times, last viewed: 2018-01-05 17:29:21 PST (-0800)