FTLeteropucctnia. ad 
Teleutospores—Sori blackish, large (2-4 mm. long by °5 mm, high), 
compact, pulvinate, elongate, with numerous smaller ones scat- 
tered between. Spores oval, fusiform, or subcylindrical, 
brown, granular, markedly constricted. Upper cell slightly 
thickened above, rounded above and below, lower cell similar 
in form, but more attenuated below, 50-60 X 20-23y. 
Pedicels brown, stout, persistent, 75-100 X 6-8p. 
Synonyms. 
Ecidium rumicis, Grev., in part. 
cidium rubellum, Pers., in part. 
Puccinia phragmitis (Schum.), in part. 
Ecidiospores on Rumex acetosa. 
Uredospores and teleutospores on Phragmites communis, 
Ecidiospores, May and June; uredospores, July and August ; 
teleutospores, August to June. 
BIoLOGy.—While studying the life-history of Puccinta phragmitis 
and magnustana, 1 became convinced that a third species occurred 
upon the common reed, which had its zecidiospores on Rumex acetosa. 
Professor Trail was fortunate enough to find near Aberdeen a Puccinia 
on reed, and in close proximity to it the AXcidium on A. acefosa, and, 
although other Rumices were growing equally near, none of them had 
the zecidiospores on them. From specimens he was kind enough to 
send me in July, 1888, the above descriptions have been drawn up. 
The teleutospores, while closely resembling those of P. phragmitzs, 
differ in having a granular spore-membrane, and in being borne on 
stouter pedicels. The last year’s teleutospores collected by him in 
June and July were found to germinate freely, and on July 29 were 
applied to R. acetosa and crispus (Exp. 950, 951), and on August 1 to 
R. acetosa, crispus, obtusifolia, and Rheum officinale. The zcidio- 
spores were produced in due course upon A. acetosa, but not upon the 
other plants. 
Puccinia magnusiana. Korn. 
cidiospores—Pseudoperidia in small circular groups on the 
leaves, mostly hypophyllous, with everted, toothed, whitish 
edges. Spores subglobose, 15-254 in diameter. 
Uredospores—Sori orange-brown, small, elliptical or linear. Spores 
globose, ovate or elliptical, finely echinulate, orange-yellow, 
N 
