Platismatia glauca
(Ragbag)
© Daryl Thompson (Photo ID #22304)
Photographer's Submitted Details
Photo Location
Eagle Ridge Bluffs, West Van BC
Photographer
Daryl Thompson
Habitat
On twig in open area
Photo Date
August 22, 2004
Upload Date
November 21, 2010
Elevation (m)
Latitude
Longitude
Photo ID #
22304
Comments
This is the isidiate form of Platismatia glauca. Isidia are warty protrusions (seen here along the lobe margins) containing algal cells and fungal hyphae and are covered by a denser outer layer of hyphae called the cortex. They are essentially miniature replicas of the thallus proper which break off and become established on a suitable substrate as a new lichens. Another common form of Platimatia glauca produces soredia rather than isidia which perform the same purpose. Soredia lack a cortex and