5^94 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 2. 



i!. 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. 1. 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 Caiion; 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 Cafion ; 

 Florence; Quimby. 



2. PHYLA Lour. 



1. 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 Caiion ; banks of Arkansas 

 at Pueblo; Rocky Ford; Boulder. 



Family n 8. 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. 



