Susceptibility of Intermountain Douglas-Fir to Rhabdocline Needle Cast When Grown in the Pacific Northwest

Fig. 3. Rhabdocline susceptible (left) and resistant (right) trees from the Cibola National Forest.



Image from Plant Health Progress article:
Susceptibility of Intermountain Douglas-Fir to Rhabdocline Needle Cast When Grown in the Pacific Northwest