104 TWELFTH ANNUAL REPORT. 



M. piperita, L. Peppermint. 

 Occurring like the last. 



M. Canadensis, L. Wild Mint. 

 Commou throughout the state. 



IiYCOPUS,Touni. Water Horkhound. 



L. Virg'inicus, L. Bugle-weed. 



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



Li. rubelliis, Moencb. (L. Europseus, L., var, integrifolius, Gray.) Water 

 Horehound. 

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

 Juni. 



L. lucidus, Turcz., var. Aniericanus, Gray.* Water Horehound. 

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



Ij. siuuatii.s, Ell. (L. Earop8eus,L., var. sinuatus, Gray.) Water Hore- 



hound. 

 Frequent, or common, throughout the state. 



PYCNANTHEMUM, Michx. Mountain Mint. Basil. 



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



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

 of the state. 



P. liuifoliuni, Pursh. Mountain Mint. Basil. 



Blue Earth county, X/eibergr. South. 



CALAMIXTHA, Tourn., Moench. Calamint. 



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

 Falls of St. Anthony, Wood's Class-Booli. Infrequent. East. 



C Clinopodiuni, Benth. Basil. 

 Stearns county, Garrison. Infrequent. 



HEDEOMA, Pars. Mock PeNxN'yroyal. 



H. puleg'ioide.S , Pers. American Pennyroyal. 



Upper Mississippi river, Garrison; lake Pepin, Sliss 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. flstulcsa, L. Wild Bergamot. 



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

 ward and in the Red river valley. 



*Lycopcs 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. Amebicanus, Gray. Leaves barely shining on 

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

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



