Ord 55. LABIATA 



1. MENTHA, Linn. 



1. Mentha Canadensis, Linn. 



Hab. Gray's Harbor, Washington Territory, southward to San 

 Francisco. — Smooth and very downy varieties occur in the collection. 

 Some of the forms approximate very closely to M. arvensis. 



2. LYCOPUS, Tourn. 

 1. Lycopus Virginicus, Linn. 



Hab. Near Gray's Harbor, Washington Territory ; never found 

 before so far west. 



2. Lycopus sinuatus, Ell. 



Hab. Nisqually, Washington Territory, and on the Lower Sacra- 

 mento, California; in marshes. 



3. PYCNANTHEMUM, Michx. 

 1. Pycnanthemum Californicum, Torr. 



Pycnanthemum Californicum, Torr. in Durand, PL Pratt, in Jour. Acad. Philad. 

 n. ser. 2, p. 99, & PI. Whippl. in Pacif. K. Koad. Expl. 4, p. 122. 



Hab. Uinpqua River, Oregon, and on the Upper Sacramento, Cali- 

 fornia. This solitary representative of the genus Pycnanthemum on 

 the Pacific side of the Continent grows further north than we had 

 supposed, and seems to be a pretty common species. It is most nearly 

 related to P. muticum, but very distinct. The flowers are pale purple. 



