294 VERBENACEAE. 



Family 117. VERBENACEAE St. Hil. VERVAIN FAMILY. 



Flowers in terminal spikes; corolla-limb 5-lobed; nutlets 4. i. VERBENA. 



Flowers in axillary peduncled short spikes ; corolla-limb 4-lobed ; nutlets z. 



2. PHYLA. 



i. VERBENA L. VERVAIN. 



Anthers not appendaged ; flowers in elongated spikes, less than 8 mm long. 



Plant tall, erect, strict ; leaves not pinnatifid, only sometimes lobed at the base 



in the first species. 



Bracts shorter than the calyx. i. V. hastata. 



Bracts one-third longer than the calyx ; pubescence dense, soft. 



2. V. MacDougalii. 

 Plant low, diffuse ; leaves more or less pinnatifid ; bracts much longer than 



the calyx. 3. V. bracteosa. 



Anthers of the longer stamens appendaged by a gland on the connective ; corolla 



8 mm. long or more. 3. V. ciliata. 



Calyx-lobes subulate. 5. V. ambrosifolia. 



Calyx-lobes setaceous. 



1. Verbena hastata L. In river valleys and moist meadows from N. S. 

 and B. C. to Fla. and Calif. Alt. 4000-7000 ft. Timnath, Larimer Co. ; 

 foot-hills near Golden ; Ft. Collins ; Mason's river- front farm, Larimer Co. ; 

 Boulder. 



2. Verbena MacDougalii Heller. In river valleys from Colo, to N. M. and 

 Ariz. Alt about 7000 ft. La Veta; Cucharas Valley, near La Veta; Ar- 

 boles; Palmer Lake. 



3. Verbena bracteosa Michx. (V. rudis Greene) On prairies and plains 

 and in waste places from 111., Alb. and B. C. to Fla. and Calif. Alt. 4000- 

 7500 ft. Colorado Springs; Manitou; Arboles; Walsenburg; Platte River; 

 Ft. Collins; Deer River; Cimarron; Rist Canon; Dixon Canon; Boulder. 



4. Verbena ciliata Benth. On plains from Colo, to Tex. and Ariz.; also 

 Mex. Alt. 4000-5500 ft. Mesas near Pueblo; Durango; Trinidad. 



5. Verbena ambrosifolia Rydb. On plains from S. D. and Colo, to Tex. 

 and Ariz. ; also Mex. Alt. 4000-6000 ft. Boulder ; Walsenburg ; Rocky Ford, 

 Otero Co.; foot-hills, Larimer Co.; Boulder Co.; La Porte; Soldier Canon; 

 Florence; Quimby. 



2. PHYLA Lour. 



i. Phyla cuneifolia (Torr.) Greene. (Lippia cuneifolia Torr.) On plains 

 from S. D. and Wyo., to Tex and Ariz. Alt. 4000-6000 ft. Greeley, Weld 

 Co. ; Ft. Collins ; foot-hills, Larimer Co. ; Boulder Canon ; banks of Arkansas 

 at Pueblo; Rocky Ford; Boulder. 



Family 1 18. LAMIACEAE Lindl. MINT FAMILY. 



Ovary of 4 united carpels ; style not basal ; nutlets laterally attached. 



Flowers in small congested cymes, axillary to small bracts, and forming a 

 raceme-like panicle ; calyx-lobes shorter than the tube ; leaves toothed. 



i. TEUCHRIUM. 

 Flowers solitary in the axils of bracts similar to the leaves ; calyx-lobes longer 



than the tube ; leaves laciniate. 2. MELOSMON. 



Ovary of 4 distinct or nearly distinct carpels ; styles basal ; nutlets basally attached. 

 Corolla bilabiate. 



