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IOWA ACADEMY OF SCIENCE Voi.. XXVIII, 1921 
on the branches. Late in the season the dissected leaves fre- 
quently disappear entirely, thus giving the plant a strikingly dif- 
ferent appearance from its early state. 
Dr. B. L. Robinson, Curator of the Gray Herbarium, to whom 
an Iowa specimen was sent, says that it has been reported on 
several occasions from other parts of the country. He cites 
references to this species as follows: Rhodora XIX, 225 (1917), 
where it was reported from an old cultivated field at Barkhamsted 
county, Massachusetts (A. B. Blewitt). Rhodora XVIII, 219 
(1916), where reported from ballast ground, Chelsea Bridge, 
Charlestown (C. B. Perkins). Torreya XHI, 258 (1913), where 
it is reported by A. O. Garrett as becoming abundant in Salt Lake 
county, Utah. 
Doctor Robinson reports specimens in the Gray Herbarium 
from the following localities : Kent, Portage county, Ohio, where 
it was collected “naturalized” in lawns by L. S. Hopkins; from 
Courtney, Missouri, “along railroads” B. F. Bush; vicinity of 
Salt Lake, Utah, from three collectors ; stony shores. Pyramid 
Lake, Washoe county, Nevada, P. B. Kennedy; Grand Canyon, 
Arizona, V. Rattan; Orange, California, Mrs. N. F. Bradshaw; 
and at a half-dozen different stations in Oregon where collected 
