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map lichen
Rhizocarpon geographicum
40.2708, -5.23735
Field Notes
Description:
Each lichen is a flat patch bordered by a black line of spores. These patches grow adjacent to each other, leading to the appearance of a map or a patchwork field.
It is a well known and distinctive, yellow-green to bright yellow crustose lichen, the thallus cracking to produce angular areoles; apothecia flat, black.
Habitat:
Widespread and often very common and conspicuous on exposed, base-poor rocks. Grows on rocks in mountainous areas of low air pollution.
On bare rocks at 2000 meters high in Gredos Mountains, Avila, Spain
Species ID Suggestions
Spotted for Missions
Photographed
PublishedJuly 13, 2011
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