Characterization and classification of mycorrhizae of Douglas-fir. III. Pseudotsuga menziesii + Byssoporia (Poria) terrestris vars. lilacinorosea, parksii, and sublutea

Abstract

Three distinct Douglas fir (P. menziesii) ectomycorrhizae formed by newly recognized varieties of Byssoporia (Poria) terrestris are described. They are named according to tree species and fungus as follows: P. menziesii + B. terrestris var. lilacinorosea, P. menziesii + B. terrestris var. parksii and P. menziesii + B. terrestris var. sublutea. Each mycorrhiza is macroscopically and microscopically defined, including surrounding mycelium and attached rhizomorphs. Cultural characteristics of the 3 fungal symbionts grown on potato dextrose agar medium are briefly noted.