492 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Range: Temperate North America. 



Specimens examined: Lakeview, Henderson, July 25, 1892; Ellensburg, Whited 566, 

 1450; North Yakima, Wait August, 1895; Henderson, June 18, 1892; Alma, Elmer 543; 

 Rock Lake, Lake <& Hull 602; Spokane, Piper, October 1, 1900; Usk, Kreager 354; Seattle, 

 Piper. 



Zonal distribution: Transition. 



MENTHA. Mint. 



Whorls of flowers all axillary 3. M. canadensis. 



Whorls of flowers in terminal spikes, or some in the upper axils. 



Leaves lanceolate, sessile or nearly so; spikes slender 1. M. spicata. 



Leaves ovate, petioled ; spikes thick 2. M. citrata. 



1. Mentha spicata L. Sp. PI. 2: 576. 1753. Spearmint. 

 Type ixkiality: "Habitat in Dania, Germania, Anglia, Gallia." 



Specimens examined: North Yakima, Wait August, 1895; White Salmon, Suksdorf. 



la. Mentha spicata viridis L. Sp. PI. 2: 576. 1753. 

 Type locality: European. 

 Specimens examined: Seattle, Piper; Vancouver, Piper; White Salmon, Suksdorf. 



2. Mentha citrata Ehrh. Beitr. 7: 150. 1792. 

 Type i/xjality: "Europa." 



Specimens examined: Tacoma, Fhtt 155. 



3. Mentha canadensis L. Sp. PI. 2: 577. 1753. 

 Type locality: " Habitat in Canada." 



Range: British Columbia to New Brunswick, south to California and Virginia. 



Specimens examined: Clallam County, Elmer 2545; Seattle, Piper in 1885; Tacoma, 

 Flell 874; Coulee City, Lake <& Hull, August 6, 1892; McKay 16; North Yakima, Watt 

 August, 1895; without locality, Vasey in 1889; Meyers Falls, Kreager 506; Spokane, 

 Dewart, July 15, 1901; Piper, September 1, 1900; Prosser, Cotton 654; Clealum Lake, 

 Cotton 842; Mabton, Cotton 748. 



Zonal distribution: Transition. 



3a. Mentha canadensis borealis (Michx.). 



Mentha borealis Michx. Fl. 2: 2. 1803. 



Mentha canadensis glabrata Bcnth. Lab. 181. 1833. 



Mentha arvensis perardi Briq. Bull. Herb. Boiss 3: 215. 1895. 



Type locality: "Hab. juxta amnes ad .sinum Hudsonis defluentes." 



Range: British Columbia to Saskatchewan, south to Colorado and California. 



Specimens examined: Chehalis River, Lamb 1235; Silverton, Bouck 146a; Skamania 

 County, Suksdorf 1000; Falcon Valley, Suksdorf 663, 664; Colville, Lyall in 1860; Lake 

 Chelan, Lake cfc Hull 601; Pullman, Lake <fc Hull 601; without locality, Vasey in 1889; 

 Kreager 481; 557, 446; Seattle, Piper, August, 1892. 



Zonal distribution: Transition. 



3b. Mentha canadensis lanata (Piper). 



Mentha arvensis lanata Piper, Bull. Torr. Club 29: 223. 1902. 



Type locality: Parrott, Lincoln County, Washington. Collected by Lake & Hull. 



Range: Washington and Idaho to California. 



Specimens examined: Wilson Creek, Lake & HuU, August 5, 1892; Parrott, Lake <& 

 Hull 603; Rock Lake, Lake & HvM 601; Newport, Kreager, August 11, 1902; Mount 

 Carlton, Kreager 295. 



