428 NORTH AMERICAN FLORA [Vovume 7 
I. Aecia hypophylious, crowded or loosely associated in small groups 1-3 mm. in diameter, 
cupulate, small, 0.1-0.3 mm. in diameter; peridium white, the margin erect or somewhat re- 
curved, erose; peridial cells rhombic or rhomboidal, 15-25 by 26-48 yu, overlapping, the outer 
wall 4-8 » thick, transversely striate, the inner wall 5-7 p thick, closely verrucose; aeciospores 
ellipsoid or globoid, 16-23 by 20-28 y; wall colorless, 1-1.5 « thick, closely and inconspicuously 
verrucose. 
I. Uredinia chiefly hypophyllous, scattered, round, 0.1-0.4 mm. in diameter, early naked, 
pulverulent, dark cinnamon-brown, ruptured epidermis evident; urediniospores flattened- 
ellipsoid or globoid, appearing elliptic, obovate or round with pores in surface view, 19-26 by 
23-34 », oblong or oblong-obovate with pores in optical section, 16-23 » wide; wall dark 
cinnamon-brown, 1-2 » thick, moderately echinulate, the pores 2, equatorial. 
IH, Telia chiefly hypophyllous, scattered or occasionally crowded in irregular groups 
2-6 mm. across, round, 0.4-1 mm. in diameter, early naked, compact, pulvinate, chocolate- 
brown, ruptured epidermis inconspicuous; teliospores ellipsoid or oblong, 20-30 by 36-58 x, 
obtuse or rounded above, rounded or somewhat narrowed below, slightly constricted at septum; 
wall chestnut- or dark cinnamon-brown, 1.5-3 » thick, thickened and lighter-colored at apex, 
7-12 w, smooth, the pore of upper cell at apex, of lower cell at septum; pedicel colorless, two 
to three times length of spore. , 
On CARDUACEAE: 
Helianthus ambiguus (A. Gray) Britton, Ohio. 
Helianthus angustifolius L., Alabama, Delaware. 
Helianthus annuus L,., Alabama, California, Colorado, Delaware, Idaho, Illinois, Indiana, 
Iowa, Kansas, Kentucky, Maryland, Massachusetts, Michigan, Minnesota, Missouri, 
Montana, Nebraska, New Jersey, New Mexico, New York, North Dakota, Oklahoma, 
Oregon, Pennsylvania, South Dakota, Texas, Utah, Vermont, Washington, West 
Virginia, Wisconsin, Wyoming; Alberta, Quebec; Cuba. 
Helianthus atrorubens L., Mississippi. 
Helianthus californicus DC., California. 
Helianthus debilis Nutt., California. 
Helianthus decapetalus L,., Connecticut, Delaware, Illinois, Indiana, Iowa, Michigan, 
Nebraska, New York, North Carolina, Ohio, Pennsylvania, Vermont, West Virginia. 
Helianthus divaricatus L,., Indiana, Massachusetts, Michigan, Minnesota, New Jersey, 
New York, North Carolina, Ohio, South Carolina. 
sees doronicoides Lam., Iowa, Kansas, Nebraska, New Jersey, New York, North 
akota. 
Helianthus fascicularis Greene, Colorado, Manitoba. 
Helianthus giganteus 1,., Indiana, Michigan, Minnesota, Nebraska, New York; Ontario. 
Helianthus grosse-serratus Martens, Colorado, Indiana, Iowa, Kansas, Minnesota, Mis- 
souri, Montana, Nebraska, South Dakota, Wisconsin. 
Helianthus heterophyllus Nutt., South Carolina. 
Helianthus hirsutus Raf., Arkansas, Indiana, Kansas, Mississippi, Missouri, Ohio, Oklahoma. 
Helianthus Kellermani Britton, Wisconsin. 
Helianthus laciniatus A. Gray, Coahuila. 
Helianthus laetiflorus Pers., lowa, Nebraska. 
Helianthus lenticularis Dougl., California, Colorado, Kansas, Utah. 
Helianthus Maximiliani Schrad., Iowa, Kansas, Minnesota, Montana, Nebraska, North 
Dakota, South Dakota. 
Helianthus microcephalus T. & G., Kentucky, Tennessee.. 
Helianthus mollis Lam., Arkansas, Illinois, Indiana, Iowa, Mississippi, North Carolina, Ohio, 
Oklahoma, Pennsylvania. 
Helianthus nitidus Lunell, North Dakota. 
Helianthus Nuttallit T. & G., Montana. 
Helianthus occidentalis Riddell, Iowa. 
Helianthus orgyalis DC., Kansas, Wisconsin. 
Hetianthus Parishiit A. Gray, California. 
Helianthus petiolaris Nutt., Colorado, Kansas, Montana, Nebraska, Wyoming. 
Helianthus Rydbergi Britton, Nebraska. 
Helianthus scaberrimus Ell. (H. rigidus Desf.), Arkansas, Illinois, Iowa, Kansas, Minnesota, 
Nebraska, South Dakota, Wyoming; Ontario. 
Helianthus strumosus L., Illinois, Indiana, Iowa, Missouri, Nebraska, New York, Pennsyl- 
vania, Vermont, Virginia, Wisconsin; Ontario. 
Helianthus subrhomboideus Rydb., North Dakota. 
Helianthus tomeniosus Michx., South Carolina. 
Helianthus tracheliifolius Mill., lowa, Kansas, Pennsylvania. 
Helianthus tuberosus 1,., Alabama, Arkansas, Connecticut, Indiana, Iowa, Kansas, Ken- 
tucky, Maine, Michigan, Minnesota, Mississippi, Missouri, Nebraska, New York, 
North Carolina, North Dakota, Ohio, Pennsylvania, South Carolina, South Dakota, 
Tennessee, Virginia, West Virginia; Ontario. ; 
Heliopsis helianthoides (L.) Sweet (H. laevis Pers.), Indiana, Minnesota, North Carolina, 
Pennsylvania. 
