SS 
XXIX. A PRELIMINARY LIST OF MINNESOTA 
UREDINE/L. 
E. M. FREEMAN. 
The following list comprises the Uredinez collected in Min- 
nesota up to the present time, by the Botanical Survey Staff. 
The materials are taken from the collections cited in my pre- 
liminary list of Minnesota Erysiphee.* In addition to these 
Dr. L. H. Pammel has made numerous collections at Hokah 
and other points in southeastern Minnesota. These have not 
been included in the present report but may be found in Tre- 
lease’s Parasitic Fungi of Wisconsin.t Puccinta anemones- 
virginiane is the only species collected by Dr. Pammel in Min- 
nesota which has not been collected elsewhere in the State. 
No representatives of the Endophyllacee or of the Schizo- 
sporacee have yet been found in Minnesota. Of the Melamp- 
soracez five genera with seven species are reported, viz: 
Chrysomyxa 1 species, Cronartium 1, Coleosporium 1, Me- 
lampsora 3, Calyptospora 1; of the Pucciniaceee seven genera 
with 62 species: Uromyces 14, Puccinia 39, Gymnoconia 1, 
Uropyxts 1, Gymnosporangium 4, Phragmidium 4, Triphrag- 
mium 1; of isolated Zcrdza (including Perzdermza) 30; of 
isolated Uredo 2. 
On May 11, 1900, there’ was collected in Mille Lacs 
county a very large witches’ broom on a white pine. The 
broom measures fully g feet across. The distortion of the 
branches is very pronounced and the leaves of the broom are 
considerably smaller than the normal. The cause of the for- 
mation cannot at present be positively ascertained. There are 
no indications that the branches contain an abundant mycelium 
and the material was collected early in.the spring before ecidia 
had time to form. So far as I am aware no authentic record of 
a witches’ broom upon pines caused by a fungus parasite exists. 
* Minn. Bot. Stud. 24: 417. 1900. 
{ Trans. Wisc. Acad. Sci. A. and L. 6: 1884. 
537 
