Observation 66811: Melanohalea olivacea (L.) O. Blanco et al.

When: 2011-05-01

Collection location: Tver Oblast, Russia [Click for map]

Who: Dmitriy Bochkov (convallaria)

No specimen available

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M. olivacea is the only one known in Russia
By: Dmitriy Bochkov (convallaria)
2011-05-03 07:42:34 CDT (-0400)

M. subolivacea and M. multispora are not. I think this matches the description of M. olivacea f. olivacea (Parmelia olivacea there) in Russian in the Handbook of Lichens of the USSR.

Thanks for checking, Chris
By: Jason Hollinger (jason)
2011-05-02 21:44:56 CDT (-0400)

So that leaves another thornier question: are the (mostly) North American subolivacea and multispora replaced with something else in Russia which we know nothing about??

By: Chris Parrish (kitparrish)
2011-05-02 18:40:32 CDT (-0400)

For Melanohalea subolivacea CNALH says “World distribution: western North America, Michigan, Canary Islands” and for Melanohalea multispora, CNAHL says “World distribution: west coast of North America, south-central Alaska to southern California.” There is no comparable statement for Melanohalea olivacea, but the CNALH range map for that species shows a few tags in Scandinavia and in central Russia near Lake Baikal (slide the map sideways to see that). I have not yet found a lichen checklist for Russia, but here are checklists for Finland, Sweden, and Norway.

Consider M. subolivacea and M. multispora, too
By: Jason Hollinger (jason)
2011-05-02 13:06:06 CDT (-0400)

M. olivacea has dot-like cracks in the surface, the other two do not. M. olivacea is also strictly northern (north of 60°N). Lastly, M. subolivacea frequently is covered with “scattered low warts”, but I’m not sure if I’d use that as anything more than confirmation of ID reached by other means…

By: Chris Parrish (kitparrish)
2011-05-02 12:43:57 CDT (-0400)

Nice portrait of this lichen! Compare with these photos of Melanohalea olivacea by the Stridvall’s (under the synonym Melanelia olivacea) and with these photos of Melanohalea olivacea by Einar Timdal (scroll down a bit to Melanohalea).

Created: 2011-05-02 12:01:13 CDT (-0400)
Last modified: 2011-05-14 16:07:10 CDT (-0400)
Viewed: 122 times, last viewed: 2018-01-11 21:41:46 CST (-0500)
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