104 TWELFTH ANNUAL REPORT. 



M. piperita, L. Peppermint. 

 Occurring like the last. 



M. Canadensis, L. Wild Mint. 

 Common throughout the state. 



L.YCOPUS,Tourn. Water Horkhound. 



L. Virginiciis, L. Bugle-weed. 



Frequent, especially northward ; common north of lake Superior, Juni, Roberts. 



Li. rubellus, Moench. (L. Europaeus, L., var. integrifolius. Gray.) Water 

 Horehound. 

 Minneapolis, Twining, Herrick; upper Mississippi river, Garrison; Baptism river, 

 Juni. 



li. lucicliis, Turcz., var. American lis, Gray.* Water Horehound. 

 Blue Earth county, Leiberg; Bear lakes, Murray county, UpJtam. West. 



Li. sinuatllS, Ell. (L. Europseus, L., var. sinuatus, Gray.) Water Hore- 



hound. 

 Frequent, or common, throughout the state. 



PYCNANTHEMUM, Michx. Mountain Mint. Basil. 



P. lauceolatuni, Pursh. Mountain Mint. Basil. " Pennyroyal." 



Common, in many districts abundant, on moist land throughout the prairie portion 

 of the state. 



P. linifoliiim, Pursh. Mountain Mint. Basil. 

 Blue Earth county, Leihe/rg. South. 



CALAMINTHA, Tourn., Mcench. Calamint. 



C. Nuttallii, Benth. (C. glabella, Benth.,var, Nuttallii, Gray.) Calamint. 



Falls of St. Anthony, Tfood's Cioss-Boofc. Infrequent. East. 



C. Clinopodiiini, Benth. Basil. 

 Stearns county, Garrison. Infrequent. 



HEDEOMA , Pers. Mock Pennyroyal. 



H. piilegioides , Pers. American Pennyroyal. 



Upper Mississippi river. Garrison; lake Pepin, Miss Manning. Rare. South. 



H. liispida, Pursh. Mock Pennyroyal. 



Common, or frequent, through the south half of the state ; extending north to the 

 upper Mississippi river. Garrison. 



MONARDA, L. Horse-Mint. 



M. fistiilosa, L. Wild Bergamot 



Throughout the state : frequent northeastward ; common, often abundant, south- 

 ward and in the Red river valley. 



*Lycopus lucidus, Turcz. Stem stout (2 to 3 feet high), erect, acute-angled at top; 

 leaves lanceolate or oblong-lanceolate (2 to 4 inches long), acute or acuminate, with 

 large and very sharp serrations, the base obtuse, or occasionally acute, subsessile ; 

 calyx-teeth alternate, subulate.— Var. AMKRicAyus, Gray. Leaves barely shining on 

 both sides, often hairy-pubescent ; stem generally hairy ; calyx-teeth small and rigid. 

 Gray's Revision of Lycnpiis, Proc. Amer. Acad., 1870. 



