Parr 6, 1921] AECIDIACEAE 467 
On CONVOLVULACEAE: 
Ipomoea arborescens (Humb. & Bonpl.) G. Don, Guerrero. 
Ipomoea carolina 1,. not Pursh (I. heptaphylla Griseb.), Cuba. 
Ipomoea intrapilosa Rose, Jalisco, Morelos, Oaxaca. 
Ipomoea murucoides R. & S., Morelos, Oaxaca. 
TYPE LOCALITY: Oaxaca, Mexico, on Ipomoea murucoides. 
DistriBuTiIon: Southern Mexico and the West Indies; also in South America. . 
Exstccat1: Barth. Fungi Columb. 5067; Barth. N. Am. Ured. 429, 1907; Sydow, Ured. 2036. 
26. Allodus insignis (Holway) Orton, Mem. 
N. Y. Bot. Gard. 6: 197. 1916. 
Puccinia insignis Holway, Ann. Myc. 2: 392. 1904. 
O. Pycnia not seen. 
I. 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 yu, the outer wall 3-5 u thick, incon- 
spicuously striate, the inner wall 4-6 thick, coarsely verrucose; aeciospores globoid, 21-26 
by 24-29 yu; wall colorless, 1-1.5 » thick, distinctly verrucose. 
III. 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 52-704, abruptly narrowed above, rounded below; wall dark chestnut-brown, 
3-3.5 » thick, prolonged into a beak above, 12-23 » thick, golden-brown, indistinctly striate- 
verrucose; pedicel slightly tinted next to the spore, stout, up to 85 u long. 
On CONVOLVULACEAE: 
Ipomoea Wolcottiana Rose, Morelos. 
TYPE LOCALITY: Cuernavaca, Mexico, on I. pomoea sp., now determined as J. Wolcottiana. 
DISTRIBUTION: Southern Mexico. 
27. Allodus nocticolor (Holway) Orton, Mem. N. Y. 
Bot. Gard. 6:197. 1916. 
Puccinia nocticoloy Holway, Ann. Myc. 2:391. 1904. 
O..Pycnia not seen. 
I. Aecia chiefly hypophyllous, gregarious, on yellow spots, circular in outline or elongate 
on the veins, cylindric, 0.3-0.5 mm. in diameter; peridium colorless, up to 2mm. long, becoming 
lacerate and falling away at maturity; peridial cells crescent-shaped, 16-24 by 32-55», the 
outer wall 3-5 » thick, appearing nearly smooth, the inner wall 7-10 u thick, deeply fimbriate- 
verrucose; aeciospores globoid, 19-24 by 24-31 yu; wall colorless, 2~3 » thick, 5-8 yw thick above, 
very finely verrucose. , 
III. Telia chiefly epiphyllous, gregarious, arising opposite or from around and among the 
aecia, circular in outline, 0.2-0.5 mm. in diameter, early naked, soon becoming confluent and 
forming large sori up to 3 mm. across, pulvinate, conspicuously pulverulent, blackish, ruptured 
epidermis not conspicuous; teliospores terete or fusiform, 26-35 by 50-75 uw, narrowed or con- 
stricted above, usually rounded below; wall dark chocolate-brown, 4-5 » thick, prolonged into 
a beak above, 12-19 « thick, slightly paler at the tip, coarsely and sparsely tuberculate; pedicel 
slightly tinted close to spore, swelling below to twice its normal diameter, about twice length 
of spore. 
On CONVOLVULACEAE: 
Ipomoea fistulosa Mart., Guatemala. 
Ipomoea intrapilosa Rose, Morelos, Puebla. ; . 
Type LOCALITY: Cuernavaca, Mexico, on Ipomoea intrapilosa. 
DISTRIBUTION: Central Mexico to Guatemala. 
Exsiccati: Barth. N. Am. Ured. 1461. 
28. Allodus superflua (Holway) Orton, Mem. 
N. Y. Bot. Gard. 6:198. 1916. 
Puccinia super fiua Holway, Ann. Myc. 2: 392. 1904. 
O. Pycnia not seen. ; a 
I. Aecia hypophyllous, occurring singly or gregarious on discolored spots, short-cylindric, 
