LAMIACEAE. 299 



1 6. HEDEOMA Pers. PENNYROYAL. 



Calyx-teeth about equal in length ; floral leaves spreading or reflexed, hispid-ciliate. 



1. H. hispid a. 

 Calyx-teeth of the lower lip much longer than those of the upper ; floral leaves 



mostly erect, cinereous-hispidulous. 

 Floral leaves longer than the subtended calyces; plant 1.5-4 dm. high. 



2. H. sancta. 

 Floral leaves scarcely exceeding the subtended calyces; plant 1-1.5 dm. high. 



3. H. nana. 



1. Hedeoma hispida Pursh. In sandy soil from Ills, and Ass. to Ky and 

 Colo. Golden. 



2. Hedeoma sancta Small. (H. Drummondii A. Gray, in part; not Benth.) 

 On dry plains from Colo, to Tex. and N. Mex. Alt. 4000-8000 ft. Durango ; 

 Manitou ; Glen Eyrie ; Dolores. 



3. Hedeoma nana (Torr.) Greene. (H. dentata nana Torn; H. Drum- 

 mondii A. Gray, in part) On dry plains and hills from Colo, and Utah to 

 Tex. and Ariz. Alt. 5000-7000 ft. Manitou ; Fossil Creek ; between Hotch- 

 kiss and Smith's Fork; Durango. 



17. CLINOPODIUM L. BASIL- WEED. 



i. Clinopodium vulgare L. In thickets from N. S. and Colo, to N. C. and 

 N. M. Alt. up to 10,000 ft. Sierra Madre ; Steamboat Springs. 



18. MADRONELLA Greene. 



Bracts thin and pale, oval to orbicular. i. M. parvifolia. 



Bracts thick, resembling the leaves, lanceolate or ovate-lanceolate, obtuse. 



2. M. dentata. 



1. Madronella parvifolia (Greene) Rydb. (Monardella parvifolia Greene) 

 In canons of Colo. Alt. about 7000 ft. Black Canon. 



2. Madronella dentata Rydb. (Monardella dentata Rydb.) On mountains 

 of Colo. Gray's Peak. 



19. LYCOPUS L. WATER HOAR-HOUND. 



Stem and lower surface of the leaves densely and finely pubescent, the former 

 often velvety. 'i. L. velutinus. 



Stem sparingly and coarsely pubescent or glabrous ; leaves glabrous or nearly so. 

 Leaves merely coarsely serrate. 2. L. lucidus. 



Leaves sinuately pinnatind. 3. L. americanus. 



1. Lycopus velutinus Rydb. In wet places among bushes from Ark. and 

 Colo, to Tex. Base of the Rocky Mountains. 



2. Lycopus lucidus Turcz. In wet soil, especially in woods and thickets 

 from Neb. and B. C. to Colo, and Calif. Alt. 4000-5000 ft. Ft. Collins; 

 Mason's river- front farm; Poudre flats. 



3. Lycopus americanus Muhl. (L. sinuatus Ell.) In swamps and wet 

 meadows from Newf. and B. C. to Fla. and Calif. Alt. 4000-7000 ft. Tim- 

 nath, Larimer Co. ; Cheyenne Mountain ; New Windsor, Weld Co. ; Table 

 Rocks; Redstone; Ft. Collins; Poudre flats; Boulder. 



