Observation 12333: Biatora vernalis (L.) Fr.
When: 2008-04-23
Herbarium specimen reported

Notes: crust lichen, on moss on boulder
THALLUS: greenish to whitish, indistinct, so many apothecia it’s hard to tell what the thallus would look like, possibly corticate-granular, possibly thin and continuous
APOTHECIA: start as little shiny waxy yellowish buds, turn into reddish thick but narrow disks with prominant shiny yellowish rims, then finally turn into hemispherical red-brown lustrous things without visible rim, all parts hyaline in section, epihymenium turning faintly yellowish in K, exciple composed of narrow radiating hyphae, very difficult to separate paraphyses and asci even in K, ascus with thick K/I+ blue tip, paraphyses seem to have swollen tips
SPORES: 8 per ascus?, narrow, slightly bent, ellipsoid, simple, hyaline, smooth, (10)13+/-2.5(16) x (3.3)4.3+/-0.6(4.9) µm (Q=(2.1)3.3+/-1.0(5.0)) (N=5)

Keys out in both Curtis’s key and in Brodo’s L. of N.A. to B. vernalis, and matches the description there well enough.

Images

24878
at 10x
24879
at 30x
24880
Apothecial section, in water, at 100×.
24881
Exciple, in water, at 400×.

Proposed Names

87% (1)
Eye3 Eyes3
Used references: Curtis Bjork’s provisional keys to the epiphytic crustose lichens of BC.
Brodo’s Lichens of North America
Based on microscopic features
Based on chemical features

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2008-10-11 23:28:56 EDT (-0400)
Last modified: 2008-10-11 23:28:56 EDT (-0400)
Viewed: 66 times, last viewed: 2016-10-25 04:40:02 EDT (-0400)