Spermogonia epiphyllous, in small clusters, honey-coloured.
Aecia usually hypophyllous, on stems, petioles and fruits, in reddish, yellow or purplish spots in dense clusters, causing swellings and distortion; cupulate with a torn white recurved peridium. Peridial cells in longitudinal rows, almost cuboid, the outer wall ca 7 µm thick and the inner wall 3-5 µm thick, with a distinct tessellate structure. Aeciospores 16-26 x 12-20 µm, polygonal with orange contents, the wall hyaline, verruculose, ca 1 µm thick.
Uredinia usually hypophyllous, scattered or arranged in lines, oblong in outline, ca 500 µm long and 200 µm wide, pale brown. Urediniospores 26-28 x 20-24 µm, broadly ellipsoidal to ovoid, yellow-brown, echinulate, the wall 1.5-2.5 µm thick, usually with 3 ± equatorial pores.
Telia usually hypophyllous, scattered or arranged in lines, to ca 1 mm long, oblong in outline, sometimes confluent, pulvinate, blackish brown. Teliospores 42-54 x 18-21 µm, the apex 6-10 µm thick, clavate, usually rounded at the apex, the upper cell much broader and shorter than the lower one, constricted at the septum, smooth, brown, darker at the apex. Pedicels yellowish, persistent, up to half the length of the spore.
Not formally assessed, but it is a common and widespread species, with a distribution largely contiguous with its host.
Part of the Puccinia caricina complex, the uredinia much more commonly encountered than the telia. Several other taxa within the P. caricina complex have Ribes species as alternate hosts, and identification from aecial material is generally not practical.
Spermogonia and aecia are reported from species of Ribes including R. alpinum, R. aureum, R. rubrum and R. uva-crispa, though Henderson & Watling (1966) maintained that these do not occur in the UK. Uredinia and telia are restricted to Carex pendula.
Common throughout England and Wales, also present in southern Scotland and ROI.