/'(/rasif/c FiiiKii of I/h'nois. -ill 



CRONARTIUM, Fin» 



'IV'l«Mit()S[)()res oiie-eelled, without ptnlicels. conipHfted in ;m 

 erect (often curved or bent) cylindrical, solid column; nredo- 

 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 luodiiced 

 on the same host, sometimes in the sauie sorus. 



C. asclepiadeum, K/,e. 

 \'ar. thesii, Berk. 



II.. III. Uredosori small, scattered, or collected in irregu- 

 lar groups, furnished with aperidium; uredospores subglobose 

 to elliptical, echinulate, 15 by 18-27 n: teleutosori scattered, 

 often numerous, column long, cylindrical, usually curved: 

 teleutospores oblong or cylindrical, yellowish-brown, smooth, 

 about 11 fi in diameter. 



On Comandra NinbeUafa: McHenry, Aug. 20, 1157. Aug. 

 23, 1245; Boone, Sept. 2. 1428; LaSalle. Sei)t. 18. 1498. Sept. 

 16. 1552; Ogle. Sept. 26. 6im>. 



The determination of the variety was made by comparison 

 with the specimens in Ellis' North American f^ungi. No. 1082. 



This is Cronarthim ro)iiandr<t>. Peck (Bot. Gaz. TV. p. 128). 



MELAMPSORA, T'ast. 



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 ru})tured. 



This genus, as here defined, includes not only what has 

 been uniformly assigned to it, but the species which have been 



