Ravenelia expansa Dietel & Holw. 1897

Ravenelia expansa Dietel & Holway, Bot. Gaz. 24 : 35. 1897
Pycnia unknown
Uredinia amphigenous, scattered, round, small, about 0.5 mm. across, subcuticular, early naked, pulverulent, cinnamon-brown, ruptured cuticle noticeable ; paraphyses intermixed with the spores, numerous, clavate, 10-13 by 30-65 {*, smooth, wall of apex much thickened, 3-7 /«, wall of sides and stipe rather uniform, 1.5-2//, dark golden-brown above, paler below ; urediniospores globoid or broadly ellipsoid, 12-18 by 15-20 fi ; wall cinnamonbrown, thin, about 1/u, closely and finely echinulate-verrucose, pores 6-10, scattered.