VERBENACEAE. 



VOL. III. 



4. Verbena angustifolia Michx. Narrow- 

 leaved Vervain. Fig. 3555. 



V. angustifolia Michx. Fl. Bor. Am. 2 : 14. 1803. 



Perennial, roughish-puberulent or pubescent; 

 stem slender, simple or branched, 4-sided above, 

 i-2 high. Leaves linear, spatulate or lanceo- 

 late, obtuse or subacute at the apex, cuneate at 

 the base and tapering into short petioles, serrate 

 or serrulate, veiny, i-3' long, 2" -5" wide; 

 spikes mostly solitary at the ends of the branches, 

 usually peduncled, slender, dense, 2'-5' long ; 

 fruits overlapping or the lower somewhat dis- 

 tant, ii" high; bracts lanceolate, acuminate, 

 equalling or shorter than the calyx; corolla pur- 

 ple or blue, about 3" long, its limb about as 

 broad, the lobes obovate or oblong. 



In dry fields, Massachusetts to Florida, west to 

 Minnesota, Kansas and Arkansas. Hybridizes with 

 V. stricta and V. bracteosa. June-Aug. 



5. Verbena stricta Vent. Hoary or 

 Mullen-leaved Vervain. Fig. 3556. 



V. stricta Vent. Descr. PI. Jard. Cels. pi. 53. 1 800. 

 Verbena rigens Michx. Fl. Bor. Am. 2: 14. 1803. 



Perennial, densely soft-pubescent all over 

 with whitish hairs ; stem stout, obtusely 4-an- 

 gled, simple, or branched above, strict, very 

 leafy, i-2| high. Leaves ovate, oval, or 

 oblong, very short-petioled, acute or obtuse 

 at the apex, narrowed at the base, promi- 

 nently veined, incised-serrate or laciniate, i'~4' 

 long; spikes solitary, or several, mostly sessile, 

 dense, stout, becoming 6'-i2' long in fruit; 

 fruits much imbricated, 2"-2i" high; bracts 

 lanceolate-subulate, nearly as long as the ca- 

 lyx; corolla purplish blue, 4"-5" long, its limb 

 nearly as broad. 



In dry soil, Ontario and Ohio to Minnesota, 

 South Dakota and Wyoming, south to Tennessee, 

 Texas and New Mexico. Naturalized as a weed 

 further east. Hybridizes with V. bracteosa. June- 

 Sept. 



6. Verbena bracteosa Michx. Large- 

 bracted Vervain. Fig. 3557. 



V. bracteosa, Michx. Fl. Bor. Am. 2: 13. 1803. 



Perennial, hirsute-pubescent; stem 4-sided, 

 much branched from the base, the branches 

 decumbent or ascending, slender, 6'-is' long. 

 Leaves ovate, oval, or obovate in outline, pin- 

 nately incised or pinnatifid, i'-3' long, more 

 or less cuneate at the base and narrowed into 

 short petioles, the lobes mostly dentate ; spikes 

 sessile, stout, dense, becoming 4'-6' long in 

 fruit ; bracts conspicuous, linear-lanceolate, 

 rather rigid, longer than the flowers and fruits, 

 the lower ones often incised; corolla purplish 

 blue, about 2" long. 



On prairies and in waste places, Minnesota and 

 Illinois to Virginia, Alabama and Florida, west to 

 British Columbia, Arizona and California. In 

 ballast grounds at Atlantic seaports. Hybridizes 

 with V. canadensis. Prostrate vervain. May-Aug. 



