The scanning-electron microscope was used to examine the cortical surface of 123 species of lichens in 12 genera of the lichen family Parmeliaceae. Two general types of cortex were found, one ...
I was standing at the information desk, in the foyer of Lakewoods Resort, when the lichenologist returned from the field. Matt Nelsen is a postdoctoral researcher at the Field Museum in Chicago, and ...
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