E-Flora BC Photo Gallery
Placopsis gelida
(Common bullseye)
© Daryl Thompson (Photo ID #22301)
Photographer's Submitted Details
Photo Location
Near Tofino BC
Photographer
Daryl Thompson
Habitat
On exposed granitic outcrop
Photo Date
November 04, 2007
Upload Date
November 21, 2010
Elevation (m)
UTM Zone #
Latitude
UTM Easting
Longitude
UTM Northing
Photo ID #
22301
Notes
The large pink structures centered in the larger pale thallus are not apothecia but cephalodia contain nitrogen fixing cyanobacteria (the primary photobiont is green algae). It is thought they provide essential nitrogen for a young thallus to establish on the fresh surfaces of granite where they are often found. The powdery green balls are sorelia, containing fragments of green algae and fungal hyphae which provide an asexual (vegetative) method of reproduction.
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