Here are photos of some lichen collections that have me puzzled. If you have any ideas, please let me know.
Two brown Lecidioid species:
27195 - Similar to Lecidea atrobrunnea but containing an unknown substance and medulla I-.
27135 - Similar to Lecidea atrobrunnea but containing norstictic acid and medulla I-.
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"Lecidea"
Posted 10
Jan 2010
Davis 2010-001. This
"Lecidea" has some obvious affinities to L. albofuscescens in
the spores and the pigmentation of the apothecial section.
This was collected
on Populus trichocarpa bark at a low elevation in the southern Washington
Cascade Range, USA. The thallus is UV+ whitish, K-, KC-, P-. The apothecial
section shows no crystals in polarized light.
Emergent apothecia
End of Davis 2010-001
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Posted 30 Jan 2003
McCune 26697. This one has an exciple reminiscent of an Opegrapha or Wadeana, but simple spores with 8/ascus and a hymenium packed with asci and almost devoid of sterile filaments. This was collected on Pinus bark on the coast of Oregon, USA.
Habit
Exciple
Asci in K / IKI
Spore in water (below)
End of 26697
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Posted 18 Sept. 2004
McCune 27195. On basalt cliffs in Artemisia - Juniperus steppe, Deschutes County, Oregon, USA. TLC with major unknown just below norstictic in A and just above norstictic in C (Rf A=3, C=4/5) . Cortex KC-, UV-; medulla I-, K-, KC-, UV-.
Habit
Apothecia
Ascus (in water)
Exciple edge
End of 27195
McCune 27135. On quartzite, Glacier County, Montana, USA. Exposed subalpine ridge. Contains norstictic acid, connorstictic acid, and an unknown UV+ substance just above norstictic acid in solvent systems A and C. Medulla and inner exciple IKI-.
Habit
Apothecia
Apothecial section
Exciple in water (below)
Spores
That's it for now! Please email any comments or suggestions to me.
