
A fruiting body of Pleurotus (the pink species). This is an example of a fungus in the Basidiomycota. The gills contain basidia and basidiospores.

A section of a gill showing basidia with 4 basidiospores on each basidium.

Stem girdling roots formed from planting trees to deep or from twisted roots grown in pots when the trees were young can kill trees as they get older.

Keeping forest and urban landscape trees healthy requires a good knowledge of tree diseases. This class will provide you with important information you can use in the future. Watch this page for new photos each week.