96 
IOWA academy of sciences 
Nillson^ states that in Sweden the P. cornui has a wider distrihutioe. 
than the hcxst of Cronartiiim, the Cynanchum vincetoxicum, which ap- 
pears to show that on the branches and stem ofPinus sylvestris there are 
several species of Pc7'i(iermium, thus he mentions the common occurrence 
of Gronartiwn ribicola\ Brunchorsb' doubts the connection between 
Coleosporium senecionis and Periderniium pini. 
Underwood and Earle state that there must be some source of infec- 
tion, “some considerable areas in eastern Alabama showing nearly every 
tree of the species more or less affected”. 
Cronartium ribicolum Dietr. of Europe is connected with P. strobi 
Kleb., there is nothing like either of the species in the region under 
discussion. There are but two ether species of Cronartium known, C. 
flaccideum (A. & Schv/.) Wint. on paeonies and 0. balsaminae Niessl. 
Neither of these need be considered. Several acicolous species of Peri- 
dermium, one of which at one time was supposed to be related to P. pini, 
are connected with Coleosporium. Coleosporium senecionis and other 
species may occur in the region but they were not found. The species 
is certainly not connected with Calyptospora goeppc7'tiana as this Pen- 
dermium occurs at much lower altitudes than the Calyptospora. 
Geograpiiical Eisteibutiox and Host Plants. The species occurs 
from the Atlantic to the Pacific and was first discovered in New York 
by Lintner, on Pinus rigkla. Ellis^ distributed it from Newfield, New 
Jersey, on Pinus inops and Dr. Anderson found it on Pmus echinata 
near Clemson College, South Carolina. Underwood and Earle® report it 
from Massachusetts. (Underwood) on Pinus rigida, on Pinus taeda Ala- 
bama (Underwood and Earle) same species by Tracy from Mississippi 
and Pinus sp. from Webster county, the same state (Stark) H. H. Hume 
from Florida where it is said to be abundant. Dr. Galloway reports it 
as occurring near Washington®. The 'writer has found it on Pinus 
murrayana in the Big Horn mountains and in the Uintah mountains 
in northeastern Utah. It is mentioned as occurring on the Lodge Pole 
pine and Bull Pine in Idaho by Dr. Von Schrenk^. It has probably been 
found on this pine at other points in the Rocky mountains. Several 
other ccrtlcolous species are recorded from the west. P. ftlamentosuin on 
Pinus ponderosa, P. liarJznessi Moore on Pinus ponderosa, P. insignia, 
P. sabineaiia and P. contorta in California, '^he P. pirifoi'me Peck on 
Pinus sp. in Georgia. The writer found what he took to be P. pini cor- 
ticola on cultivated specimens of Pinus sylvestris in St. Louis and in 
Ames some years ago. But specimens are not now at hand to speak 
authoritatively on this matter. 
T. Nilson. Forstligt botaniska undersokningar i sydostra Nerike. 
1892.. (B''orstl. bot. Untersiichungeu in sudostliclien Nerike. 1892. Sep- 
arate Tidsk. f. skogsbas liallning. 1893. Abst. Zeitseb. fur I’flanzenk 4 : 187. 
2. See Klebahn. Kulturversncb mit beterociseben Uredineeu. Zeitseb. f. 
rflanzenk. 2: 258. Iledvvigia 29: 28-3.5. 1890. 
Her. d. deutsch'Bot. Gesellscb. 8: 03-66. 
Vorlaxiflge Bericbt viber in .Tabre 1894 angestellte Kulturversuche mit Rost- 
pilze Zeitseb. f. I’tianzenk. 4 : 194. 
3. Nogle norske skovskydomme. (Eine Norwegisebe Waldraukbeiten Ber- 
gen’s Museum VlII. 1891'. 3. Zeitseb. f. Pflanzenk. 4: 241. 
4. N. Am. Fung. 1022. 
5. 1. e. 403. 
6. Jour. Mye. 7 : 44. ! 
7. H. H. Hume. Contr. Bot. D’ept. I. S. C. A. & M. A. 15. 
8. Forestry and Irrigation. 7 : 60. f. 2. 
