know what to call them. One occurs on Artemisia and is evidently 
the same as that found bv Mr. Anderson, while the other is found on 
Berberis repens, and is that described by Messrs. Tracy and Galloway in 
Bot. Gaz., 18S8, pp. 126,127. When I first found them, I called them 
in my notes JEcidium artemisim and JEcidium repentis , respectively, and 
I knew what these names referred to. Now, they stand as JEcidium 
tanaceti and JEcidium mirabilissima , on the strength of their assumed 
connection with the Puccinias of the same specific names, but I do not 
feel quite easy about them. In the first place, the Artemisia JEcidium 
may not have anything to do with P. tanaceti after all j at any rate, it 
grew in great abundance just outside the door of my house, and I never 
saw any of the Puccinia. It is much brighter, more orange in color than 
Jcidium compositarum , which grew abundantly on Aster Iccvis at the 
same place (8,400 feet alt.). Secondly, the Berberis JEcidium may or 
may not be P. mirabilissima. It is exceedingly local, and if the Puccinia 
is as local, I may easily have overlooked it, for I never yet saw it, 
though I have examined any amount of Berberis. There is a Puccinia , 
very abundant, that was thought to be a form of graminis , and a possi¬ 
ble connection with the JEcidium was suggested, but it now proves to 
be P. caricis. Another JEcidium we have in great abundance is JEcidium 
euphorbias on Euphorbia Montana , and on the same plants occurs TJromy- 
ces scutellatus , so these may be connected. JEcidium monoicum is also 
abundant early in the year on Arabis , distorting the host plant so much 
that it becomes unrecognizable. 
As with Mr. Anderson, Pliragmidium subcorticium is very abundant on 
roses, especially Rosa blanda and its varieties. Melampsora salicina we 
get on the willows as high up as 10,000 feet. 
I am now preparing a list of fungi of this region for the Colorado Bio¬ 
logical Association, which becomes possible only through the kind help 
of Mr. J. B. Ellis, who examines and identifies the species, and assists 
in every way. Many interesting forms have been met with, all of which 
will be noticed in due time. 
NOTES UPON SPHJEKOTHECA PHYTOPTOPHILA, KELL. AND SWIN¬ 
GLE. 
By B. D. Halsted. 
Some hackberry ( Celtis occidentalis) trees upon the Agricultural Col¬ 
lege grounds at Ames / Iowa, are quite badly infested with a mite (Pliy- 
toptus) causing prominent distortions of the young branches which fre¬ 
quently form bushy tufts of dwarfed stems that may be seen several 
rods away, when the trees are not in leaf. While investigating the 
healthy twigs and those which had been distorted by the mite, to deter¬ 
mine the differences in the amount and disposition of the starch and 
