Observation 21644: Collema fuscovirens (With.) J.R. Laundon

When: 2009-05-28

Collection location: Vavenby Limestone South, British Columbia, Canada [Click for map]

Who: Jason Hollinger (jason)

Specimen available

Ragged thing for the most part (not as broad and rosette-shaped as C. subflaccidum) on exposed limestone. Spores are quite variable in this genus, helping to confirm ID if fertile.

SPORES 4 per ascus, hyaline, muriform with 3 transverse septa and one longitudinal, 22-23 × 11-13 µm (N=3)


Undersurface showing rhizine-like tufts.
Spores in water at 1000×.

Proposed Names

89% (2)
Used references: Lichen Flora of Greater Sonoran Region, preliminary keys to Ways of Enlichenment, confirmed by Curtis Bjork.
Based on microscopic features

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= Observer’s choice
= Current consensus


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Created: 2009-06-03 20:08:37 PDT (-0700)
Last modified: 2013-09-08 11:29:39 PDT (-0700)
Viewed: 150 times, last viewed: 2019-02-12 12:11:16 PST (-0800)
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