Puccinia insignis Holw. 1904

Allodus insignis (Holway) Orton, Mem
N. Y. Bot. Gard. 6: 197. 1916.
Puccinia insignis Holway, Ann. Myc. 2: 392. 1904.
0. Pycnia not seen.
1. Aecia of secondary form epiphyllous, occurring singly or in groups of two to five on rather large yellow spots, surrounded by the telia, short-cylindric, 0.2-0.3 mm. in diameter; peridium colorless; peridial cells rhombic, 20-25 by 29-35 fx, the outer wall 3-5 /x thick, inconspicuously striate, the inner wall 4-6/1 thick, coarsely verrucose; aeciospores globoid, 21-26 by 24-29 m; wall colorless, 1-1.5 ix thick, distinctly verrucose.
Telia epiphyllous, loosely grouped about the aecia, or arising from the aecia, rarely confluent, circular in outline, 0.1-0.3 mm. across, opening by an apical ostiole, pulvinate, compact, blackish-brown, ruptured epidermis conspicuous; teliospores ellipsoid or terete, 25-31 by 52-70 /i, abruptly narrowed above, rounded below; wall dark chestnut-brown, Z-Z.S ^ thick, prolonged into a beak above, 12-23 ju thick, golden-brown, indistinctly striateverrucose; pedicel slightly tinted next to the spore, stout, up to 85 m long.
On ConvolvuIvACEae :
Ipomoea Wolcottiana Rose, Morelos.
Type locality: Cuernavaca, Mexico, on Ipomoea sp., now determined as /. Wolcottiana. Distribution: Southern Mexico.