Phragmidium rosae-multiflorae

Spermogonia not seen. Aecia hypophyllous or petiolicolous, occasionally on fruits or young shoots, generally elongated on veins of leaves, petioles and shoots, up to 2 cm long, pulvinate, finally somewhat pulverulent, rupturing through epidermis, orange-yellow;paraphyses none;aeciospores globose, subglobose or ellipsoid, 20-30 x 15-22 µm, walls verrucose, 2.0-3.0 µm thick, nearly hyaline, contents orange-yellow. Uredinia hypophyllous, scattered or in small groups, minute, 0.1-0.6 mm diameter, orange-yellow to pale-yellow, pulverulent;paraphyses clavate, erect or incurved, 25-65 x 10-18 µm, hyaline, walls smooth, 1.0-2.5 µm thick;urediniospores globose, subglobose, broadly ellipsoid or obovoid, 18-27 x 15-21 µm;walls 2-3 µm thick, verrucose, hyaline;contents orange-yellow. Telia hypophyllous, scattered or gregarious, minute, round or irregular, 0.2-0.4 mm diameter, pulverulent, black;teliospores cylindrical, (3-)6-7(-9)-septate, 65-126 x 20-30 µm, rounded at apex, not constricted at septa, walls 2.4-4.0 µm thick, yellowish-brown, minutely verrucose (smooth, Hirastuka, 1992), apical papillae conical, up to 8-10 µm long with three germ pores in each cell;pedicels hyaline, persistent, 60-129 µm long. See Wei (1988) and Hiratsuka et al. (1992) for more detailed descriptions.