Freeman: MINNESOTA UREDINE#. 547 
On Carex castanea WAHL.: Lake, (III) Je. 1893, Shel- 
don 4822. 
Carex utriculata Bootr: Houston, (III) My. tgoo, 
Lyon 537. 
Canes apa imdet. : , (III) 1893, Sheldon 7135, 7368 
and 7122; Hennepin, (III) O. 1898, Freeman; Henne- 
pin, (III) S. 1900, Freeman 786%. 
Urtica gracilis A1r.: Ramsey, (1) My. 1899, Freeman 
322; Waseca, (I) Je. 1891, Sheldon 206 and Taylor 
202. 
Urtica sp. indet.: Hennepin, (I) 1893, Sheldon 5968 and 
5967. 
13. P. phragmitis (ScuuM.) Korn. Hedw. 15: 179. 1876. 
In Europe it has been demonstrated by several investigators 
that the ecidium on various species of /Atumex belongs to P. 
phragmitis. According to the recent culture experiments of 
Arthur (1. c.) eecidia were easily obtained upon Rumex crispus 
and /tumex obtusifolius. According to the same author no au- 
thentic and undoubted record of the collection of Mczdzum 
rubellum GMEL. has been reported upon American species of 
Fumex. A Minnesota specimen of Aumex britannica L. was 
collected in 1899 (Freeman 471) upon which several groups of 
gecidia were found. Upon comparison with czdzuwm rubellum 
on Le. hydrolapathum * the two specimens were found to agree 
perfectly in all morphological characters. 
The spots are circular and usually of a reddish color, not 
swollen. Pseudoperidia on lower surface of the leaf somewhat 
crowded, leaving usually a free central area, flat, cup-shaped with 
revolute lacerate margin. Spores 17-23 x 11-174. Itseems 
very probable therefore that this ecidium on Rumex britannica 
belongs to P. phragmit’s. Arthur’s explanation that the ecid- 
ium on /ewmex has up to this time been overlooked is therefore 
probably correct. 
On Rumex britannica L.: Ramsey, (1) Je. 1899, Freeman 
471. 
Phragmites phragmites (L.) Karst : ——,(III) 1893, Shel- 
don 7119. 
14. P. rhamni (P.) Wetrtst. Verh. Zool.-Bot. Ges. Wien. 35: 
545. 1885. (P. coronata Cpa.) 
* Krieger Fung. Sax. no. 853. 
