Entyloma polysporum (Peck) Farl. 1883

Entyloma polysporum (Peck) Farl. Bot. Gaz. 8 : 275. 1883
Pro tom.yces poly sporusTe.Q)s. Thtim. Myc. Univ. 1813. 1881.
Sori in leaves, forming subcircular to more irregular and often indefinite areas, generally dark-brown, 2-5 mm., usually limited in number and killing more or less of the surrounding tissue; spores hyaline to yellowish or even light chestnut-brown, ovoid to spherical or somewhat polyhedral, smooth, usually with remains of the gelatinous hypha forming outer coat of the thick wall, 12-17 /^ or in some cases even 20 ^ in length ; evidence of conidia usually lacking.
On Ambrosiaceae :
Ambrosia ariemisiaefolia , Connecticut, Illinois, Indiana, Iowa, Michigan, New York,
Wisconsin. Ambrosia bidentata, Illinois. Ambrosia trifida, Illinois, Iowa, New York.
On Carduaceae :
Gaillardia pulchella, Kansas. Helianthus annuus, Montana. >Type locality : Albany, New York, on Ambrosia trifida. Distribution : Connecticut to Montana and Kansas.