Cephaleuros virescens
Infestation of the algal leaf spot (Cephaleuros virescens) on ther southern magnolia (Magnolia grandiflora); Green-orange algal spots or "green scruf" on leaf surface. The grayish-white and darker "crusts" are lichens of the genus Strigula resulting from fungal colonization of the alga.
Source
Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:
"Cephaleuros virescens01."
http://commons.wikimedia.org/wiki/File:Cephaleuros_virescens01.jpghttp://commons.wikimedia.org/wiki/File:Cephaleuros_virescens01.jpg
Wikimedia
CC BY.
