Phragmidium arisanense

Uredinia hypophyllous, scattered or in small groups, circular, minute, 0.2-0.8 mm diameter, early exposed, somewhat pulverulent, orange-yellow;paraphyses numerous, cylindrical or clavate, 50-80 × 12-20 µm, somewhat incurved, walls thin (1 µm), smooth, colourless;urediniospores globose, subglobose, obovate or broadly ellipsoid, 18-28 × 14-22 µm minutely echinulate, colourless;wall 1.5 µm thick;contents orange-yellow. Telia hypophyllous, scattered or aggregate, minute, round or irregular, 0.2-0.4 mm diameter, early exposed, pulverulent, black;teliospores cylindrical, 4-6-septate, 59-98 × 27-35 µm, without apical papilla, rounded at both ends, not or slightly constricted at each septum;wall smooth (verrucose in Wei, 1988), 2.5-4.0 µm thick, sometimes slightly thickened above up to 5 µm, with three germ pores in each cell;pedicels colourless, persistent, up to 103 µm long, hygroscopic. See Wei (1988) for a more detailed description.