778 FLORA. 



Verbena urticifolia rip&ria (Raf.) Britton. Leaves incised, sometimes 3-cleft near 

 the base; flowers blue. River-banks, N. J. to N. Car. 



3. Verbena hastata L. BLUE VERVAIN. WILD HYSSOP. (I. F. f. 3059.) 

 Perennial, roughish-puberulent; stem strict, 4-sided, 9-22 dm. high. Leaves oblong- 

 lanceolate or lanceolate, petioled, acute or acuminate, serrate or incised-dentate 

 with acute teeth, 0.7-1.5 cm. long, the lower sometimes hastately 3-lobed at the 

 base; spikes panicled, slender, usually peduncled, 5-15 cm. long; fruits 2-3 mm. 

 high; bracts ovate, acuminate; corolla blue, its limb about 3 mm. broad. In moist 

 fields, meadows and in waste places, N. S. to Br. Col., Fla.. Neb. and N. Mex. 

 Hybridizes with V. stricta and V. bracteosa. June-Sept. 



Verbena hastkta pinnatffida (Lam.) Britton. Leaves deeply incised or pinnatifid. 

 Occasional in the range of the type. 



4 Verbena angustifolia Michx. NARROW-LEAVED VERVAIN. (I. F. f. 

 3060.) Perennial, roughish-puberulent or pubescent; stem slender, 4- sided above, 

 3-6 dm. high. Leaves linear, spatulate or lanceolate, cuneate at the base, serrate 

 or serrulate, veiny, 3-8 cm. long, 4-10 mm. wide; spikes mostly solitary, slender, 

 dense, 5-13 cm. long; fruits 3 mm. high; bracts lanceolate, acuminate, equalling 

 or shorter than the calyx; corolla purple or blue, about 6 mm. long. In dry fields, 

 Mass, to Fla. to Minn., Kans. and Ark. Hybridizes with V. stricta and V. brac- 

 teosa. June-Aug. 



5. Verbena stricta Vent. HOARY OR MULLEN-LEAVED VERVAIN. (I. F. f. 

 3061.) Perennial, soft-pubescent; stem obtusely 4-angled, strict, very leafy, 

 3-8 dm. high. Leaves ovate, oval, or oblong, short-petioled, prominently veined, 

 incised-serrate or laciniate, 2- 10 cm. long; spikes mostly sessile, dense, becoming 

 1.5-3 dm. long in fruit; fruits 4-5 mm. high; bracts lanceolate-subulate, nearly a*s 

 long as the calyx; corolla purplish blue. In dry soil, Ohio to Minn., S. Dak., 

 Wyo., Tenn., Tex. and N. Mex. Nat. as a weed further east. Hybridizes with 

 V. bracteosa. June-Sept. 



6. Verbena bracteosa Michx. LARGE-BRACTED VERVAIN. (I. F. f. 3062.) 

 Perennial, hirsute-pubescent; stem 4-sided, the branches decumbent or ascending, 

 slender, 1.5-4 dm. l n g' Leaves ovate, oval, or obovate in outline, pinnately in- 

 cised or pinnatifid, 2-8 cm. long, the lobes mostly dentate; spikes sessile, stout, 

 becoming 1-1.5 dm. long in fruit; bracts conspicuous, linear-lanceolate, rather 

 rigid, the lower ones often incised; corolla purplish blue, about 4 mm. long. On 

 prairies and in waste places, Minn, and 111. to Ala. and Fla., Br. Col., Ariz, and 

 Cal. Hybridizes with V. Canadensis. May-Aug. 



7. Verbena Canadensis (L.) Britton. LARGE-FLOWERED VERBENA. (I. F. f. 

 3063.) Perennial; stem slender, 2-4 dm. high, the branches ascending. Leaves 

 ovate in outline, petioled, 2-8 cm. long, truncate or broadly cuneate at the base, 

 irregularly pinnately incised, often 3-cleft, the lobes dentate; spikes peduncled, 

 solitary at the ends of the branches, becoming 5-10 cm. long in fruit; bracts linear- 

 subulate; calyx-teeth filiform-subulate; corolla 2-2.5 cm ' l n g> blue, purple, white 

 or in cultivation variegated; fruit 5-6 mm. high. In dry soil, 111. to Tenn., Fla., 

 Kans., Mex. and N. Mex. This and the next the source of many garden and 

 other hybrids. May-Aug. 



8. Verbena bipinnatifida Nutt. SMALL-FLOWERED VERBENA. (I. F. f. 

 3064.) Perennial, producing suckers, hirsute or hispid; stems' erect, 1.5-4.5 dm. 

 high. Leaves petioled or the uppermost sessile, broadly ovate in outline, deeply 

 i-2-pinnatifid into linear or linear-oblong lobes and segments; spikes solitary at 

 the ends of the branches, thick, dense, becoming 5-10 cm. long in fruit; calyx- 

 teeth filiform-subulate; corolla 12-18 mm. long, purple or lilac; fruit 3-4 mm. 

 high. On dry plains and prairies, S. Dak. to Tex., Chihuahua, Colo, and Ariz. 

 May-Sept. 



a. LIPPIA L. 



Perennial herbs, or shrubs, with opposite, or rarely alternate leaves, and small 

 bracted flowers, in spikes or heads. Calyx small, ovoid, campanulate or com- 

 pressed and 2-winged, 2-4-toothed or 2-4-cleft. Corolla tube cylindric, the limb 

 oblique, somewhat 2-lipped, 4-cleft. Stamens 4, didynamous; anthers ovate, not 

 appendaged, the sacs nearly parallel. Ovary 2-celled; ovules I in each cavity; 



