Observation 12932: Sarcogyne similis H. Magn.
When: 2008-10-15
Herbarium specimen reported

Notes: This is taken from two observations:

Endolithic lichen, on exposed granite of road cut.
APOTHECIA: small black discs, scattered, lecideine, (0.27)0.39+/-0.07(0.48) mm (N=18)
DISC: black to reddish-black, concave, epruinose, concave to convex
RIM: black, prominant, smooth, becoming thinner and developing a translucent edge in age
EPIHYMENIUM: reddish brown, not at all greenish, K-, sometimes with up to 10 µm hyaline layer on top
HYMENIUM: hyaline to somewhat brownish
HYPOTHECIUM: hyaline to somewhat brownish
EXCIPLE: thin black outer layer from pigment in hyphae walls, not carbonized, grading from brown to hyaline inside
PARAPHYSES: swollen to 5 µ wide at rounded tips, not pigmented
SPORES: many many per ascus, hyaline, smooth, simple, somewhere around 3-4 × 1-1.5 µm (I have better measurements elsewhere)

I have seen this with much larger apothecia before, I think, but I would like to compare the two more carefully before I’d be willing to say the other observation (observation 7219) is the same species for sure.

Images

26172
26173
26174
at 10x
26175
at 30x
26176
apothecial section, in water, at 100x
26177
exciple, in water, at 400x
26178
spores, in water, at 1000x

Proposed Names

87% (1)
Eye3 Eyes3
Used references: Nash’s Sonoran Flora
Based on microscopic features
Based on chemical features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-10-19 23:48:20 EDT (-0400)
Last modified: 2008-10-19 23:48:20 EDT (-0400)
Viewed: 18 times, last viewed: 2016-10-21 12:11:58 EDT (-0400)