77$ FLORA. 



Verbena urticif&lia ripiria (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 hastiita 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. l n g * n fruit; fruits 4-5 mm. high; bracts lanceolate- subulate, nearly as 

 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. long. 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. 



2. 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; 



