The three major types of lichens -- crustose, foliose and fruticose -- all grow on this tree branch. (Photo by MSU ...

As a forester, I often get asked tree health questions, and one involves flat blotches of stuff growing on well-established ...

As a forester, I often get asked tree health questions, and one involves flat blotches stuff growing on well-established yard ...

Found on every continent, lichen is an extraordinary organism adapted to survive in every habitat except seawater. More than just curious growths on rocks and trees, lichen can endure extreme ...

For more than 150 years, scientists have debated whether Prototaxites—which stood roughly 24 feet tall and 3 feet wide—were ...

The Cooperative Extension Plant Clinic can provide information on scale insect control, urban tree care, and other ...

Known colloquially as ‘stinky sticta’, this lichen has really earned its name ... often using favoured perches among tree branches from which to dart at passing prey. They will also take ...

A rare lichen has been transplanted by hand after the Lake District tree it was living in blew over. Lungwort - Lobaria pulmonaria - used to be widespread in England but is now found in only a few ...

I often receive calls from concerned individuals about gray, fuzzy growths appearing on plants that seem to be causing harm.

Dawn Brennan inspects the bark of a tree covered in several different lichens during a Lichen in the Winter World walk held by the Glacier Institute around Apgar in Glacier National Park on ...