Summary of basic morphological features and growth of five parental species and hybrid isolates.

1 ov = ovoid, b-ov = broad ovoid, s-glob = sub-globose, el-ov = elongated ovoid, ell = ellipsoid, lim = limoniform, 2 N = nested, E = extended 3 Sterile or self sterile silent A1 4 Sterile or silent homothallic (1 isolate selfing in soil filtrate) 5 zoospores unable to cleave 6 sporangia unable to form Summary of basic morphological features and growth of five parental species and hybrid isolates.