Maloy, O.C.. 2003. White pine blister rust. The Plant Health Instructor. DOI:10.1094/PHI-I-2003-0908-01

DISEASE:  White pine blister rust

PATHOGEN:  Cronartium ribicola (Peridermium strobi

HOSTS: White (five-needle) pines (Pinus spp.) and currants and gooseberries (Ribes spp.).

Author
Otis C. Maloy,
Washington State University, Pullman, WA

Aeciospores are released
from a canker on a western
white pine after peridia rupture.
(Courtesy O. Maloy)