Observation 11646: Rinodina
When: 2008-06-08
Herbarium specimen reported

Notes: crust lichen, on sandstone
THALLUS: endolithic
APOTHECIA: black, small, separate, adnate to stipitate, lecanorine; rims v thin almost disappearing, ragged whitish-gray, K-; disc black, epruinose, becoming convex; epihymenium brown, small amount of tiny POL+ white granules; hymenium clear; hypothecium clear to faint golden; exciple negligible??; paraphyses many branched at tips, last several cells inflated w/ brown pigmented caps, not strongly stuck together
SPORES: 8 per ascus, elliptical, clear becoming gray becoming dark brown, smooth, 2 cells, rounded lumina with thick apex and less thick walls when young, losing thickened walls in age, dark band of pigment around waist, waist slightly constricted even in K, (18)24+/-3(32) x (8.3)10+/-1(13) µm (N=18)

Can’t get this one to key out the Sonoran Flora. I tried both Rinodina (given the clear hypothecium) and Buellia to no avail.

Images

23100
at 10x
23101
at 30x
23102
apothecial section, in water, at 100x
23103
apothecial section, in water, at 100x, cross-polarized
23104
close-up of exciple, in water, at 400x
23105
collage of spores, in water, at 1000x

Proposed Names

87% (1)
Eye3 Eyes3
Used references: Nash’s Sonoran Flora

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-09-27 19:03:18 CDT (-0400)
Last modified: 2008-09-27 19:03:18 CDT (-0400)
Viewed: 38 times, last viewed: 2016-10-24 18:49:33 CDT (-0400)