Uredo albertensis Arthur 1907

Uredo albertensis Arthur
Melampsora albertensis Arth. Bull. Torrey Club 33 : 517. 190,6.
O and I. Pycnia and aecia unknown.
Uredinia hypophyllous, numerous, scattered, round, 0.2-0.4 mm. across, eariy naked, pulverulent, pale-yellow, ruptured epidermis noticeable ; paraphyses numerous, intermixed with the spores, clavate, 9-15 by 67-90,", wall colorless, 3-5 u thick, smooth, stipe solid ; urediniospores flattened laterally, when seen from the broad side broadlyelliptical, 16-19 by 23-27 yu, when seen from the narrow side oblong, 13-15 by 23-27 /*; wall colorless, 1.5-2^, much thickened on the flattened sides, 2.5-3.5 /x, evenly and sparsely verrucose-echinulate, without smooth spots.