Phragmidium rosae-pimpinellifoliae Dietel, 1905
Rosa spinosissima, Hongarije, Budapest, Hűvösvölgy © László Érsek: all parts of the plant are set with large aecia
upper side of an infected leaf
underside of an infected leaf
galled flower bud
Rosa cf. canina, Belgium, prov. Namur, Saint-Servais, Asty-Moulin; © Jean-Yves Baugnée, det. Arthur Vanderweyen
Rosa pimpinellifolia, Bergen aan Zee. Often the aecia form large lumps, but in this case they were present only as tiny specks on a gall of Diplolepis cf. eglanteriae.
underside and upperside of two old leaves, bearing telia
telia, hand-lense magnification
characteristically, the spore gradually narrows into the apiculus
no alternation of hostplant. Spermogonia and aecia mostly on branches or petioles, also the veins. Aecia can fuse to large lumps, without a peridium but around the margin with, in this species mostly just a few, hyaline, sausage-shaped curved paraphyses; spores produced in chains, finely spinulose. Uredinia hypophyllous, up to 0.2 mm, orange, surrounded by many paraphyses, spores single, pedicellate. Telia hypophyllous brown; spores long pedicellate, elliptic, dark brown, transversely divided into c. 6-8, finely verrucose or smooth cells, apically gradually tapering into an apiculus.
Rosa canina, dumalis, “eglanteria”, foetida, glauca, majalis, rubiginosa, spinosissima.
R. spinosissima is the most important hostplant.
Bahcecioglu & Kabaktepe (2012a), Buhr (1965a), Ellis & Ellis (1997a), Gäumann (1959a), Gjaerum (1986a), González-Fragoso (1925a), Helfer (2005a), Henderson (2000a), Koops (2013a), Pellicier (2001a), Petrova & Denchev (2004a), Poelt & Zwetko (1997a), Preece (2008a), Redfern & Shirley (2011a), Roskam (2009a), Sadravi, Ono, Pei & Rahnama (2007a), Termorshuizen & Swertz (2011a), Vanderweyen & Fraiture (2007a), Wilson & Henderson (1966a), Woods, Stringer, Evans & Chater (2015a).