by Pat Jaquith
pat@westvalleynaturalists.org
Brighter than the Blanket flower that grows nearby in summer, this rock-dwelling lichen is a long-time resident on this carbonate-rich rock. Exposed to the elements, temperatures that range more than 100 degrees, with no shade to protect it and no roots to find water, this lichen grows about .4mm per year. It has probably taken about 150 years to attain its current size. The following article describes some fascinating facts about this and some other foliose (leafy) lichens in our area.
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