Collection location: Cambria, California, USA [Click for map]
On planted Monterey Cypress (Hesperocyparis macrocarpa), dead branches, in a coastal grassland setting.
Thallus thin, continuous, whitish-green, K+Y. Apothecia biatorine, flat becoming convex, dark purple brown to black, somewhat pie-bald. Hymenium hyaline, hypothecium pale yellow and K+ intensifying, epihymenium dark brown from paraphyses apical caps, K+violet.
Spores 8/ascus, asci K/I+blue, fading to just the tholus. Spores hyaline, acicular with one end blunt,(5) 7-13+ septate (estimate), not breaking apart. Average size 38.5×3.0 (n=4)
|User’s votes are weighted by their contribution to the site (log10 contribution). In addition, the user who created the observation gets an extra vote.|
|I’d Call It That||3.0||0.00||0|
sum(score * weight) /
(total weight + 1)
3/1/19: Thallus smooth, white, K+Y confirmed, but faint (not previously recorded from West Coast NA, but typical for East Coast). Epihymenium black, POL-. Exciple lateral interior with brown coloration. Proper exciple width 70µm. Exciple with radiating hyphae, rim with enlarged cells, probably 1-2 cell layers. Fine white POL+ crystals in outer exciple extending down through medullary part. Hymenium with a dingy yellow brown color, K+Purple, 75µm tall. Hypothecium pale yellow, strongly intensifying in K. Paraphyses caps dark with epithecial pigments.
Still holding ID at Bacidia heterochroa. The K+P hymenium narrows the possibilities.
where many of the ids reported are probably incorrect. To say nothing of our own ids!
Anything which grows on both coasts is suspect to me. It just means that there aren’t enough differences to responsibly describe them as separate species. Certainly not that they really are the same thing. Add to it that most lichenologists tend to pick a coast and stick to it, so few people are regularly seeing both things in the wild. It might be a while before any convincing conclusion is reached.
There are a dozen or more records on the west coast of B. heterochroa confirmed by Ekman, mostly Bay area and Santa Barbara to Los Angeles, including the Channel Islands. I didn’t see any others from Cypress, mostly Quercus, Baccharis and Umbellularia. This is the first record in the central coast area on CNALH, but I’ll check with Knudsen, he has collected extensively in this area. Surprisingly he has few Bacidia collections up here, one is B. coruscans,but that species has a distinct blue-green K- epihymenium.
B. heterochroa on the west coast is supposed to be K-, while on the east coast it has atranorin and tests K+Y. This specimen is K+Y, so no sure where that leaves us.
Created: 2017-06-08 23:22:04 CDT (-0400)
Last modified: 2019-03-09 19:01:42 CST (-0500)
Viewed: 85 times, last viewed: 2019-04-10 18:32:05 CDT (-0400)