66 General Notes. 
II. Phragmidiei, including Trachyspora Fkl., Triphragmidium 
Lk., and Phragmidium Lk. 
II. Endophyllei, including the single genus Endophyllum Ley. 
IV. Gymnosporangiei, with the genus Gymnosporangium Hedw. 
V. Melampsorei, including Melampsora Cast., Melampsorella 
Schrot., Calyptospora J. Kuhn, Coleosporium Lev., Chrysomyxa 
Unger., and Cronartium Fr. 
TUMBLE-WEEDS AGAIN.—The latest addition to the lengthening 
list of tumble-weeds is Corispermum hyssopifolium L., which in 
northern Nebraska assumes the globular form now so well known 
as characteristic of the tumble-weeds, and late in the season gives 
itself to the winds. Fine specimens were brought to me in Sep- 
tember, 1887, by a correspondent from Long Pine, near the 
iobrara River. 
In this connection, it may be well to direct attention to the 
account given by R. M. Christy, in his “ Notes on the Botany of 
Manitoba,” which appeared in the October number of the Journal - 
of Botany, of the tumbling habit of Psoralea esculenta, the “ Indian 
of the prairies: “ After flowering, instead of withering 
away, the plant remains standing, and by the time its seeds are ripe 
it has become—flowers, stalks and all—perfectly dry, brown and 
rigid. In this condition it is very light. The stem then sepa- 
rates just below the ground, leaving the entire plant free, to be 
blown about by the wind over the surface of the prairie, dropping 
its hard, oval seeds as it goes.” Mr. Christy weighed a number of 
plants and found that, while they averaged six and a half inches in 
height and bore three flower-clusters each, they had an average 
weight of but a trifle over thirty grains.—Charles E. Bessey. 
BorantcaL WORK IN Mrynesora.—The Report on the Botan- _ 
ical work in Minnesota for the year 1886, which was distributed 
the Ist of October, 1887, gives one a very good idea of the kind of 
work which is being done by those constituting the working force 
of the Geological and Natural History Survey of the State. Pro- 
fessors Arthur and Bailey, with Mr. E. W. D. Holway, made an 
expedition to Vermilion Lake, where they remained for some time 
engaged in the critical study of the flora of the region, Other 
points were visited, and collections were made. The party was 
composed of experienced collectors, and the results were unusually 
good. Two of the party were acute students of the fungi and other — 
lower plants, while the third was equally well prepared for s 
work on Glumaces and Amentace, as well as the Phanerogams : 
in general. 
The list of specimens collected is a remarkably good one, num- 1 
bering seven hundred and sixty-two in all. These are distributed 
as follows :— 
