Puccinia fumosa Holw. 1905

Dicaeoma fumosum (Holway) Arthur
Puccinia fumosa Holway, Ann. Myc. 3: 23. 1905,
0. Pycnia not seen.
1. Aecia hypophyllous, closely clustered in rounded or irregular groups up to 5 nfm. across, on larger lightyellow spots, cupulate, 0.1-0.2 mm. in diameter, low; peridium yellowish, often collapsed, the margin strongly recurved, denticulate; peridial cells rhomboidal in radial longitudinal section, 15-21 by 21-31 ju, overlapping, the outer wall thick, 5-9 /t, smooth, the inner wall thinner, 2.5-3.5 ju, moderately verrucose; aeciospores globoid or angular, 14^18 by 16)u; wall pale-yellow, thin, 1 jU, minutely verrucose, appearing almost smooth when wet
Urediiiia amphigenous, numerous, scattered, sometimes confluent in small groups, roundish, 0.1-0.6 mm. in diameter, tardily naked, buUate, cinnamon-brown, ruptured epidermis conspicuous; urediniospores ellipsoid or obovoid, 16-22 by 21-28 /i; wall cinnamonbrown, 1.5-2 fx thick, moderately and rather noticeably echinulate, the pores 2, equatorial.