BioImages: The Virtual Field-Guide (UK)
Cronartium flaccidum (Alb. & Schwein.) G. Winter (Scots Pine Blister Rust)
||11 September 2013
|OS grid ref
||50° 50' N, 1° 60' W
||Vice County: Dorset, VC9, England
(Please quote this in any queries about this record)
|Stage or state
||telia, on leaves of Garden Peony
||hypophyllous, on spotted leaf of Paeonia mascula
||Leaf-spots: greyish-brown to purplish elongate, often veinlet-limited spots, 3/5 to 5/7mm, eventually coalescing and often turning the entire tip or margin dark and curled or rolled.
Underneath the spot is initially pale green and grows bright orange then whitish telial columns, the leaf spot becoming darker with age.
Telial columns mostly lost by end of September.