Differentiating <i>Phytophthora ramorum</i> and <i>P. kernoviae</i> from Other Species Isolated from Foliage of Rhododendrons

Fig. 17. Dichotomous key using stable characteristics to differentiate Phytophthora spp. that are known to be pathogenic to foliar plant parts of Rhododendron spp.



Image from Plant Health Progress article:
Differentiating Phytophthora ramorum and P. kernoviae from Other Species Isolated from Foliage of Rhododendrons