IOWA ACADEMY OF SCIENCE 
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220. PucciNiA Majanthae (Scliw.) Arth. & Holw. 
^ I on Polygonatu-m Uflorum (Walt.) Ell. (Salomonia Britton.) 
A single plant was found with ascia. 
221. PucciNiA Menthae Pers. 
II, III on Pycnanthemum yilosum Nutt. (Koellia Britton), Mentha cana- 
densis L., and Monarda fistulosa L. 
Ahundant and common. 
222. PUCCINIA Muhlenbekgiae Arth. & Holw.' 
II on MuMenTjergia Bchreheri J. F. Gmel. (M. diffusa Willd.) 
A single clump of the host was found abundantly infected, in midsummer. 
223. PUCCINIA Opizii Buhak. 
I on Lactuca canadensis L., and L. pulchella. 
The secia of this species is not ahundant and the telia have been collected 
in America only once or twice. The alternate host is an undetermined species 
of Garex. 
224. PUCCINIA Peckii (De T.) Kellerm. [Aecidiiim Oenotherae Peck.] 
I on Oenothera hiennis L, (Onagra Scop.) 
III on Garex longirostris. 
The aecia of this species are produced very abundantly in spring and early 
summer. 
225. PucciNiA Phrymae (Hals.) Arth. lAecidium Phrymae Hals.] 
I on Phryma leptostachya L. 
In one woods the aecia are produced abundantly from early spring to mid- 
summer. 
226. PucciNiA PiMPiNELLAE (Str.) Link. 
On Osmorhiza Glaytoni (Michx.) Clarke, and 0. longistylis (Torr.) DC. 
(Washingtonia sps. Britton.) 
Autecious. Common and abundant in spring and early summer. 
227. PucciNiA PLUMBEEiA Peck. 
I pn Phlox paniculata L. (Herb. Arthur.) 
A single sorus was collected. Dr. Arthur says that the form may be hete- 
roecious, but for the present refers it here. The only other collection of secia 
on this host is recorded by Tracy who reports it from Starkville, Miss.* 
228. PUCCINIA POCULiFOEMis (Jacq.) Wettst. [P. graminis Pers.] 
II, HI on Agropyron repens (L.) Beauv., Agrostis alha L., and A. alha vul- 
garis (With.) Thurb. 
A common rust. 
229. PUCCINIA PODOPHYLLI (Schw.) Link. 
I, III on Podophyllum peltatum L. 
*Bull. Miss. Agr. Exp. Sta., 34:90. 1895. 
