MINT FAMILY. Labiates. 



places from N. Eng. to Pa., Del., and Ga. Not com- 

 mon. 18-28 inches high or more. In the var. crispa the 

 plant is smooth, but the green flower-cup is hairy; it has 

 also torn-toothed leaves somewhat curled. Swamps and 

 roadside ditches. Southern N. Y., N. J., and Pa. 



... The tiny bell-shaped flowers clustered in 



Mentha circles about the plant-stem at the junc- 



arvensis tion with leaf-stems. Leaves ovate, blunt- 



Light purple toothed, and distinctly stemmed. Not a 

 July-August common S pecies. 6-20 inches long. Found 

 in moist fields. N. Eng., N. Y., and Pa., south. 



The only native mint. The lilac-white 

 no r White flowers oblon S bell-shaped, with 



arvensis var a short-toothed edge ; the clusters ar- 

 Canadensis ranged as in the preceding species. 

 White or Leaves conspicuously tapering from the 



lilac-white centre toward both ends, coarsely toothed, 

 u y ~ ^ p " ovate-oblong or lance-shaped, and rough- 



ish, or nearly smooth. The plant is more 

 or less hairy throughout, and has the odor of Penny- 

 royal. In wet places south to Va., and through the 

 northern United States across the continent. 10-28 in- 

 ches high. This mint, according to Prof. Charles Robert- 

 son, is visited in Illinois by the fly Jurinia smaragdina. 

 A mintlike weed with small white 

 Lycopu** flowers remotely suggesting a bugle 



Virginicus shape. Stem slender, four-angled, and 

 White generally smooth. The light green leaves 



July-Sep- ovate lance-shaped and very coarsely 



toothed. The tiny flowers clustered at 

 the bases of the leaves have but two perfect stamens ; 

 the other two, if present, are quite abortive. Fertilized 

 mostly by the beelike flies, and the small bees of the 

 genus Halictus. 6-24 inches high. Common. 



A similar species, with some leaves so 

 Cut*-leaved 



Water Hore- deeply toothed that they appear incised, 

 hound and others incised to an appearance of 



Loecpus lobes. The stiff stem generally smooth, 



White" simple or branched. The flower-cup tiny 



June-Sep- an< ^ but little larger than its green calyx, 

 tember 1-2 feet high. Common. 



394 



