Infected leaf - underside

Description :

Longitude (deg): -1.2. Latitude (deg): 51.4. Longitude (deg/min): 1° 10' W. Latitude (deg/min): 51° 30' N. Vice county name: Berks. Vice county no.: 22. Country: England. Stage: Uredia (II). Associated species: Campanula trachelium. Identified by: Malcolm Storey. Photo summary: "infection, teliospores". Comment: on underside of leaves of Nettle-leaved Bellflower. Category: standard photograph or close-up. Photographic equipment used: Nikon D100 dSLR with Tamron SP T90 AF Macro 1:1 lens.