IOWA ACADEMY OP SCIENCE 
69 
180. PoLYTHELis FuscA (Pers.) Arth. IPuccinia fuscum (Pers.) Winter.] 
On Anemone quinquefolia L. 
This is one of the most abundant of our early rusts, the sori appearing some- 
times before the leaves are full grown. Only O and III. 
181. Ueopyxis Amoephae (M. A. Curt.) Schroter. iPuccinia AmorpTiae 
M. A, Curtiss.] 
Ill on Amorpha fruticosa L. 
Common in late autumn, and usually abundant where found. 
182. Pheagmidium Rosae-aekansanae Dietel. 
I, II, III on Rosa pratincola Greene. 
% 
Rather uncommon and not abundant. 
183. Gymxoconia inteestitialis (Schl.) Lagerh. iUredo caeoma-nitens 
Schw., Caeoma nitens Schw.] 
On Ru'bus sp. indet. 
Common on the wild blackberry. 
184. Kuehneola Potentillae (Schw.) Arthur. IPhragmidium ohtusum 
(Straus) AVinter.] 
II, III on Potentilla canadensis L. 
Rather common. The primary uredo of this species is the first rust to ap- 
pear in the spring. 
185. Gymxospoeanqium coeniculans Kern. 
On Amelancliier canadensis (L.) Medic. 
Pycnia and immature aecia were collected just as the leaves were falling from 
a tree badly infested with Dimerosporium CoUsonii. “The telia of this species 
are to be found on the branches of the red cedar and produce galls which are 
woody and irregularly globular, ranging from a few millimeters to two or three 
centimeters in diameter. They are readily told from the galls of Gym. Juni- 
peri-virginianae, but are not unlike those of Gym. nidus-avis. . . . Only one 
collection of the telia has yet been made. . . . (This) was obtained in 
northern Michigan.” Arthur in Litt. 
186. Gymnospoeaxgium globosum Farlow. {_Roesielia lacerata Pries.] 
I on Crataegus punctata Jacq., and G. rotundifolia Moench. 
Ill on Juniperus virginiana L. 
Common and abundant both on the cedar and the thorn. Of the last scarcely 
a healthy leaf remains on many trees. 
187. Gymnospoeaxgium Junipeei-vieginianae Schw. [G. macropus Link, 
Roestelia pyrata Thax.] 
I on Pyrus ioensis (Wood) Bailey (Malus Britton), and P. Malus L. (M. 
Malus Britton.) 
Ill on Juniperus virginiana L. 
Very common and abundant. The cedar apples are more conspicuous than 
in the preceding species, but locally no more abundant. The wild crab is most 
