NOTE ON THE VARIATIONS IN THE TELEUTO- 
SPORES OF PUCCINIA WINDSORI~. 
JOSEPH ALLEN WARREN. 
Every one who has studied the rusts has observed that the 
teleutospores are often very irregular in their general shape, 
number of cells, and the relation of the cells to one another. 
This fact has frequently been recorded, and is often referred 
to in books and papers on the Uredinez. In studying the 
teleutospores of Puccinia windsorie Schw., collected in a scat- 
tered maple grove on the “bottom land” bordering a small 
creek near Lincoln, Neb., March 31, 1898, on Muhlenbergia 
racemosa B. S. P., I found some more than usually interesting 
forms, which are shown in the accompanying plate. 
In the genus to which this species is referred there are two 
cells in the teleutospore, as shown in Figs. 21-26, but a 
reference to the plate shows one-celled, two-celled, three-celled, 
four-celled, and five-celled forms. Normally also the two cells 
lie in the extension of the axis of the pedicel, as in Figs. 21-23 
and 25, but all kinds of departures from the normal may be 
observed on the plate. Out of 572 spores counted in several 
mounts from different leaves, the microscope fields being taken 
at random, I found 27 abnormal spores, or about 434 per cent. 
On some leaves the proportion of abnormal spores was much 
higher, and in one cluster of 11 spores still holding together 
in the mount, five had more than two cells. 
Of the 572 spores referred to above — 
I (or 1.93 per cent) were three-celled, with septa parallel. 
12 (or 2.10 per cent) were three-celled, with septa in two planes. 
I (or .17 per cent) was four-celled, with septa in one plane. 
I (or .17 per cent) was one-celled. 
2 (or .35 per cent) were turned upon their pedicels. 
In other mounts I found several four-celled spores, with the 
septa in two planes, as in Figs. 16, 18, and 20. 
