Dicaeoma ruelliae

Dicaeoma ruelliae (Berk. & Br.) Kuntze, Rev
Gen. 33:470.1898.
Uredo Ruelliae Berk. & Br. Jour. Linn. Soc. 14: 92. 1873.
Puccinia lateripes Berk. & Rav.; Berk. GreviUea 3: 52. 1874.
Uromyces texensis Berk. & Curt.; Berk. GreviUea 3: 56. 1874.
Diorchidium lateripes Magnus, Ber. Deuts. Bot. Ges. 9: 191. 1891.
Puccinia Ruelliae Lagerh. Tromso Mus. Aarsh. 17: 71. 1895.
Puccinia Blechi Lagerh.; Pat. & Lagerh. Bull. Soc. Myc. Fr. 11: 214. 1895.
Dicaeoma lateripes Kuntze, Rev. Gen. 3^: 469. 1898.
Aecidium Tracyanum Sydow, Hedwigia Beibl. 40: 129. 1901.
Puccinia Ruelliae Bourgaei Dietel & Holway, Bot. Gaz. 31; 329. 1901.
Puccinia Longiana Sydow, Hedwigia Beibl. 40: 126. 1901.
Aecidium lateripes Kellerm. Jour. Myc. 9; 234. 1903.
Uredo balaensis Sydow, Ann, Myc. 1; 21. 1903. Pycnia amphigenous or caulicolous, in loose groups on spots with the aecia, inconspicuous, brownish, globoid or flask-shaped, 90-120 m in diameter by 80-110 ju high; ostiolar filaments dense, 15-35 ix long.
1. Aecia caulicolous or amphigenous, causing distortion of the stem, on spots on the leaves, cylindric, 0.2-0.3 mm. in diameter by 0.3-0.6 mm. high; peridium white, delicate, often becoming ruptured near the base and resulting in the aecia appearing short and cupulate, the margin irregular, lacerate; peridial cells ellipsoid or oblong, 18-24 by 32-44 /i, overlapping, the walls 3-5^ thick, verrucose; aeciospores ellipsoid, 15-21 by 20-30 ju; wall pale-yellow, 1-2 IX thick, closely verrucose.
Uredinia amphigenous, numerous, scattered or irregulariy clustered, roundish, small, 0.1-0.7 mm. across, rather early naked, pulverulent, cinnamon-brown, ruptured epidermis conspicuous; urediniospores ellipsoid or obovoid, 16-24 by 22-32 ju (southern forms up to 26 by 37 ju); wall cinnamonbrown, 1.5-2.5 /x thick, moderately and strongly echinulate, the pores 2, equatorial.