Observation 97364: Dermatocarpon meiophyllizum Vainio

When: 2012-06-14

Collection location: Turnbull National Wildlife Refuge, Spokane Co., Washington, USA [Click for map]

47.0° 117.0° 703m

Who: nastassja (Nastassja Noell)

Specimen available

Substrate: Basalt cobblestone; position: top and side of rock.

Habitat: Vernal Pool.

Plant Associations: to fill in later, but includes Camassia quamash.

Frequency: abundant on substrate in habitat.

Light: dappled shade.

Thallus: single lobed, umbilicate. 3-6mm diameter.

Upper cortex: darker brown when dry, paler brown to green when wet. Smooth with black dots (perithecia).

Lower cortex: super dark when both dry and wet. smooth.

Perithecia: light pink, up to 65 µm across at maturity (only one thallus segment observed, number of perithecia observed = 8)

Spores: seems to be 8 per asci. (14-)15-18µm x 6-7(-8)µm n-spores=6, n-asci=2. Hyaline, elipsoid to naviculate.

Rhizines: None.

Apothecia, Soreida, Isidia: None.

Notes: thalli are completely covered in filamentous algae from evaporation of pool; neat that enough light can get through the film.

Key to Dermatocarpon of the Pacific Northwest.. by Doug Glavich (2006).

“Floristics and Distribution of Vernal Pools on the Columbia Plateau of Eastern Washington” by C. Bjork and P. Dunwiddie. Rhodora Vol. 106 No. 928 p.327-347.

**Seems to be Dermatocarpon meiophyllizum

Proposed Names

59% (2)
Used references: Goward “Lichens of British Columbia”
Glavich “Key to Dermatocarpon: Pacfic Northwest”
Based on chemical features: C-

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Great reference
By: Jason Hollinger (jason)
2012-06-18 04:06:56 CDT (-0400)

I’ve been forced to use the Sonoran Flora for all of North America, this will really help in the northwest. I agree, D. meiophyllizum is promising based on the smooth lower surface and doubtful occurrence of D. luridum in the west.

Created: 2012-06-14 23:37:22 CDT (-0400)
Last modified: 2012-06-18 04:05:08 CDT (-0400)
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