LABIATAE 273 



Calyx-lobes triangular : leaf-blades creaate-dentate. 8. M. arvensis. 

 Calyx-lobes subulate : leaf-blades serrate. 



Calyx-lobes ciliate ; tube glabrous. 9. M, gentilis. 



Calyx-lobes and tube more or less pubescent. 

 Stem pubescent with reflexed hairs : leaves closely pubescent. 



10. M. sativa. 

 Stem pubescent with spreading hairs : leaves glabrous or nearly so. 



11. M. Canadensis. 



1. Mentha spicata L. Spearmint. (Man. p. 805; I. F. /. 3174.) 

 In moist fields or waste places, N. S. to Ont., Minn., Utah, Fla. and Kans. 

 Nat. from Eu. — Pennsylvania : Pike ; Northampton ; Bucks ; Dela- 

 ware ; Chester ; Lancaster ; Schuylkill ; Columbia ; Franklin ; 

 Huntington ; Erie ; Allegheny. 



2. Mentha piperita L. Pepperjiint. (Man. p. S05 ; I. F./. j/75.) 

 In wet soil, N. S. to Minn., Fla. and Tenn. — Pettnsylvania : Northamp- 

 ton ; Bucks ; Delaware ; Chester ; Lancaster; Dauphin ; Colum- 

 bia ; Franklin ; Huntingdon ; Erie ; Allegheny. 



3. Mentha longifolia (L.) Huds. Horse Mint. (Man. p. 805 ; I. 

 F- /• 3^77-) lo waste places, Conn, to Pa. and N. J. Nat. from Eu. 

 — Pennsylvania : Northampton ; Bucks ; Philadelphia. 



4. Mentha rotundifolla (L. ) Huds. Round-leaved Mint. (Man. 

 p. 805 ; I. F. /. 3178.) In waste places, Me. to N. C, Tex. and Mex. — 

 Pennsylvania : Northampton ; Allegheny. 



5. Mentha alopecuroides Hull. Woolly Mint. (Man. p. 806; I. 

 T?./. 3179.) Along roadsides, N. Y., N. J. and Pa. to Mo. Nat. from 

 Eu. — Pennsylvania : Monroe ; Bucks ; Lancaster ; Lebanon ; Perry ; 

 Franklin. 



6. Mentha aquatica L. Water Mint. (Man. p. S06 ; I. F./. 31S0.) 

 In wet places, N. S. to Pa. and Ga. Nat. from Eu. — Pennsylvania : 

 Lancaster. 



7. Mentha crispa L. Crisp-leaved or Curled Mint. (Man. p. 

 806; I. F. f. 31S1.) In swamps and roadside ditches, N. Y., N.J. and 

 Pa. — Pennsylvania : Northampton ; Philadelphia. 



8. Mentha arvensis L. Corn or Field Mint. (Man. p. 806 ; I. 

 F./ J/&. ) In dry waste places, N. B. to N. Y., N. J., Pa. and Fla. 

 Also in Calif, and Mex. — Pennsylvania: Northampton; Chester; 

 Lancaster ; Dauphin ; Franklin ; Huntingdon ; Bedford ; Erie. 



9. Mentha gentilis L. Creeping or Down\ Whorled Mint. 

 (Man. p. 806; I. F.y. 3183.) In waste places and along streams, Me. to 

 northern N. Y., N.J. and Pa. Nat. from Eu. — Pennsylvania : Monroe ; 

 Northampton ; Dauphin ; Lancaster. 



10. Mentha sativa L- Marsh WhorlEd Mint. (Man. p. 806; I. 

 F.y. 3184. ) In waste places, N. S. to Pa. Nat. from Eu. — Pennsylvania : 

 Northampton ; Bucks ; Lancaster. 



11. Mentha Canadensis L- American Wild Mint. (Man. p. 806 ; 

 I. F./. 3183.) In moist soil, N. B. to the N. W. Terr., B. C, Va., Kans., 

 N. Mex. and Nev. — Pennsylvania : Northampton; Bucks ; Delaware. 



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