Observation 49831: Alectoria ochroleuca (Hoffm.) A. Massal.
When: 2010-07-21
No herbarium specimen

Notes: Location: 52°10’55.53"N, 117° 6’15.29"W, el. 2265m

Photo: Alectoria ochroleuca (pale “usnic acid yellow” with extensive greenish-gray smudges) is seen here with Thamnolia suibuliformis (bone white) and Vulpicida tilesii (deep yellow).

Identification: In photos, Alectoria ochroleuca may resemble Alectoria nigricans (or Gowardia nigricans, as it is listed in the most recent checklist), but Alectoria ochroleuca contains usnic acid, while Alectoria nigricans does not, so their thallus colors are different. Both species occur in the southern Canadian Rockies of Alberta.

References:
Sharnoff’s Alectoria ochroleuca gallery
Sharnoff’s Alectoria nigricans gallery

[admin – Sat Aug 14 02:04:27 +0000 2010]: Changed location name from ‘Parker Ridge, Banff NP, Alberta, Canada’ to ‘Parker Ridge, Banff National Park, Alberta, Canada’

Proposed Names

61% (2)
Eye3 Eyes3
Used references: Thompson, “American Arctic Lichens, 1. The Macrolichens,” 1983, pp.33-38

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Eye3 = Observer’s choice
Eyes3 = Current consensus

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Created: 2010-08-07 13:24:14 PDT (-0700)
Last modified: 2010-08-13 20:25:17 PDT (-0700)
Viewed: 98 times, last viewed: 2016-10-16 13:33:50 PDT (-0700)
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