TWO NEW CRUCIFERAE 
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Fig. 32. Left hand specimen: Brassica arvensis (L.) Kuntze. Right hand specimen: 
Brassica juncea (I^.) Cisson. Photo by Mr. Richardson. 
similar, but the latter species has some bristles on the lower por- 
tion of the stem and along the midrib of the lower leaves. 
The following specimens of B. juncea are in the Iowa State 
College herbarium ; Kossuth County, 1897 ; Emmet county, 1897 , 
1898, 1901 and 1902; Ames, 1907, 1908 and 1913; Frazer, 1911; 
Kelley, 1911; Marathon, 1908; Spirit Lake, 1920, and Alden, 
without date. 
The second plant, Lepidium perfoliatum L., is probably a very 
