Observation 76642: Usnea strigosa group
When: 2011-09-19
(35.0° -82.0° )
No herbarium specimen

Proposed Names

29% (1)
Eye3
Recognized by sight
61% (2)
Recognized by sight
84% (1)
Eyes3
Recognized by sight: fertile bushy Usnea with pinkish tones

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Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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I don’t blame you!
By: Jason Hollinger (jason)
2011-09-26 11:43:51 PDT (-0700)

I’m generally perfectly content with leaving it at “Usnea strigosa group”, too! :)

Thanks for your input
By: Patrick Harvey (pg_harvey)
2011-09-26 08:07:24 PDT (-0700)

I’m not quite ready to dive into another sea of species … but I greatly appreciate your helping me name some of my finds.

chemistry / microscopy required for species det.
By: Jason Hollinger (jason)
2011-09-24 11:11:40 PDT (-0700)

Key to short, apotheciate Usnea in eastern North America: (James Lendemer)

1. salazinic acid (black foot) . . . U. subfusca
1. no salazinic acid . . . 2

2. red spots, medulla white . . . U. michauxii
2. no red spots . . . 3

3. medulla CK+o, pink, rare . . . U. cristatula
3. medulla CK-, white or pink . . . 4

4. galbinic, fibrils short spinulose, medulla white, coastal . . . U. evansii
4. galbinic absent . . . 5

5. medulla white . . . U. strigosa
5. medulla pink . . . 6

6. spores < 9 um, chemistry various . . . U. strigosa
6. spores > 9 um, norstitic or nothing . . . U. endochrysea

Created: 2011-09-19 11:09:14 PDT (-0700)
Last modified: 2011-09-24 11:09:06 PDT (-0700)
Viewed: 57 times, last viewed: 2017-06-09 19:52:35 PDT (-0700)
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