114 
IOWA ACADEMY OF SCIENCES. 
Dane County, Wisconsin. Transactions of the Wisconsin 
Academy of Science, Arts and Letters, Vol. IX, part 1, p. 82.) 
Mukwonago, Forty miles west of Milwaukee, (David F. Day, 
Bot. Gaz., Vol., VIII, p. 159). 
Vernon county, near La Crosse, 1886. (Pammel, Prairie 
Farmer, January 29, 1887.) 
Madison, 1883. “Quite common.” (Pammel. Goff, Bull. 
No. 39, Wis. Agrl. Experiment Station, p. 18, fig. 6.) 
Neenah, Elkhart lake, August, 1892. (J. H. Schuette.) S. 
E. Wisconsin, 1886, (Parry.) 
BUFFALO BUR, SPINY NIGHT SHADE, SAND BUR. 
Solamim rostratum, Dunal. 
Description. An annual, somewhat hoary or yellowish, 
with a copius wholly stellate pubescence, one to two feet high, 
spreading specimens occasionally five feet across, globular, 
leaves interruptedly bipinnatifid or only once pinnatifid, lobes 
roundish, obtuse and repand, armed with straight bristles, 
corolla yellow, about an inch in diameter, slightly irregular, 
short lobes broadly ovate, calyx prickly, adhering to the fruit, 
at least fitting very closely. Stamens, as well as style, declined, 
anthers taper upward, linear — lanceolate, dissimilar the lowest 
one much longer and larger with an incurved beak. 
*In Gray’s “Synoptical Flora” the distribution is given as 
“Plains of Nebraska to Texas (Mexico).” In Gray’s Manual, 
sixth edition, the statement is made “spreading eastward to 
Illinois and Tennessee.” Plains (Nuttall Gen. I, p. 129). 
(Pursh, FI. I, 156, T. 7). 
The writer has been familiar with this weed in the northwest 
for a number of years. It was first observed in a lot in Water- 
town, Wisconsin, in 1887. I saw occasional specimens in St. 
Louis in the fall of 1886. It was apparently well established 
in Nevada, southwest Missouri in 1888, as large specimens were 
found growing in many vacant lots. The same summer I saw 
a great deal of it growing in Ft. Scott, Kansas, and various 
towns along the M. K. & T. R. R. in Indian territory. How 
long it had been established here I was, of course, unable to 
say. It had the appearance everywhere of being thoroughly 
at home. In Texas, from Denison south to Hempstead in 
Waller county, and west to San Marcos in Hays county, the 
weed was met everywhere, growing in many places to the 
* Vol. II, Part I, p, 231. 
