94 STEVENS: NORTH DAKOTA PLANTS 
the ground. In a dooryard at Courtenay the species grew 
mixed with L. densiflorum. The latter had racemes about 3 cm. 
long with numerous well-developed pods, while the plants of L. 
ramosissimum had only a few half-developed pods. 
+Lepmrum Drapa L. Several years ago (Ann. Rept. 
North Dakota Exp. Sta. 22: 80. 1912) I called attention to the 
possibility of this being introduced in Turkestan alfalfa seed. 
On June 6, 1918, a flowering plant was sent me by Mr. H. A. 
Nelson of Ray. [A well established colony has since been found 
along the railroad track at Moorhead, Minnesota, May 22, 1921.| 
+ Sisymprium Lorsenit L. Determination verified by Paul 
C. Standley and specimens deposited in herbaria of the U. 5. 
Sy rocer Museum and the New York Botanical Garden. 
Annu dm. high, sparingly hirsute with simple flattened 
hairs, dene less abundant above but present on upper stems 
and pedicels; leaves runcinate, the terminal segment hastate 
and irregularly ceo lower stem leaves sometimes I dm. 
long; racemes becoming 3-4 dm. long, pedicels widely spreate 
one third to one half the length of the slender pods, which a 
ascending and about 3 cm. long with three-nerved valves 
Devil’s Lake, July 15, 1920 (common about the streets); 
Tappen, July 12, 1919 (a single plant in the street; several in 
an old field of Bromus inermis Leyss. several years before). 
The description was drawn from the growing plants and speci- 
mens collected at Devil’s Lake. The plant has somewhat the 
aspect of Sophia intermedia Rydb., but the leaves are quite 
different and the racemes are fewer but longer and coarser. 
The relative height of flowers and young pods mentioned by 
Koch and others seems scarcely distinctive. In this plant the 
pods do not surpass the flowers in normally developed racemes, 
but examples are frequent where they do so, apparently as a 
result of arrested development. 
ErucastrumM Po.iicait Schimp. & Spenn. Park. River, 
Aug. 8, 1913; Williston, Aug. 15, 1915; Oakes, July 18, 1919; 
Cooperstown, Aug. 25. 1919. This has now been found at 
many places, chiefly along the railroad tracks. The seeds have 
been identified in several samples of timothy and millet coming 
from near Grand Forks or a short distance north or south of 
this locality. The pods are not flattened, as stated in Bergman’s 
key, but rounded, the valves with a rather prominent mid- 
nerve; racemes leafy bracted. The plants grow vigorously in 
late fall as shown by a flowering specimen collected at Fargo, 
Oct. 26, 1914. 
