Observation 32004: Canoparmelia texana (Tuck.) Elix & Hale

Locality: 29°15’7.40"N, 103°17’50.60"W, el. 1645-2120 m

Substrate and habitat: Growing on juniper bark in an open woodland of piñon, juniper, and oak.

Identification: Canoparmelia crozalsiana is the only species of Canoparmelia recorded from the park

Note added on 16 Jan 2010: Thanks, Brendan! Your photos of Canoparmelia crozalsiana clearly show the scrobiculate pattern of shallow depressions separated by ridges, while these photos from Big Bend and the photo by Sharnoff have nothing like such a dramatic pattern.

Sharnoff Canoparmelia texana gallery
Consortium of NA Lichen Herbaria images and specimen locality map. Click on the small map (perhaps several times) for a larger interactive version.
Global Biodiversity Information Facility world distribution map (at bottom of page). This map is also interactive.

Common name: Texas shield lichen

Species Lists



Proposed Names

3% (2)
Used references: Brodo, Sharnoff, and Sharnoff, 2001, pp.480-481 and 211-212
59% (2)
Eye3 Eyes3
Recognized by sight: The photos for observation #32004 morphologically match Canoparmelia texana. Canoparmelia crozalsiana has distinct scrobiculate maculae that are not mentioned by Brodo et al. (2001).
Used references: Though C. crozalsiana is the only member of the genus on the park list, C. texana is mapped in the Big Bend region by Brodo et al. (2001).
Photos of C. crozalsiana:
Photos of C. texana:
Brodo et al. 2001

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Created: 2010-01-14 13:43:38 PST (-0800)
Last modified: 2010-01-14 13:43:38 PST (-0800)
Viewed: 206 times, last viewed: 2018-05-02 08:30:58 PDT (-0700)
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