Parasitic Fungi of Illinois. 211 
CRONARTIUM, Fariszs. 
Teleutospores one-celled, without pedicels, compacted in an 
erect (often curved or bent) cylindrical, solid column; uredo- 
spores produced on pedicels, the uredosorus covered by a pseudo- 
parenchymatous membrane. 
The peculiar column, composed of the elongated teleuto- 
spores adhering closely to each other, and rising conspicuously 
from the substratum, clearly designates this genus. The 
uredospores and teleutospores, so far as known, are produced 
on the same host, sometimes in the same sorus. 
C. asclepiadeum, Kze. 
Var. thesii, Berk. 
IL, III. Uredosori small, scattered, or collected in irregu- 
lar groups, furnished with a peridium; uredospores subglobose 
to elliptical, echinulate, 15 by 18-27 1»; teleutosori scattered, 
often numerous. column long, cylindrical, usually curved; 
teleutospores oblong or cylindrical, yellowish-brown, smooth, 
about 11 » in diameter. 
On Comandra umbellata: McHenry, Aug. 20, 1157, Aug. 
23, 1245; Boone, Sept. 2, 1428; LaSalle, Sept. 13, 1498, Sept. 
16, 1552; Ogle, Sept. 26, 6199. 
The determination of the variety was made by comparison 
with the specimens in Ellis’ North American Fungi, No. 1082. 
This is Cronartinm comandr, Peck (Bot. Gaz. IV. p. 128). 
MELAMPSORA, Cast. 
Teleutospores one or more celled, when divided the septa 
mostly vertical (sometimes horizontal or oblique ), sessile, densely 
compacted in a firm, flat or slightly convex layer; uredospores 
single celled, sessile upon the hymenium, the sori usually cov- 
ered by a membrane, which is finally irregularly ruptured. 
This genus, as here defined, includes not only what has 
been uniformly assigned to it, but the species which have been 
