Susceptibility of Some <i>Lilac</i> Cultivars and Other Members of the Oleaceae to <i>Phytophthora ramorum</i>

Fig. 1. Typical leaf symptoms on Syringa vulgaris: (A) upper surface and (B) lower surface.



Image from Plant Health Progress article:
Susceptibility of Some Lilac Cultivars and Other Members of the Oleaceae to Phytophthora ramorum