72 



VERBENACEAE. 



[Vol. III. 



7. Verbena Canadensis (X.) Britton. Large-flowered Verbena. (Fig. 3063.) 



Buchnera Canadensis L- Mant 88. 1767. 

 Verbena Aublelta Jacq. Hort. Vind. 2: 82. pi. 



176. 1772. 

 Glandularia Carolmensis J. G. Gmel. Syst. 



2: 920. 1796. 

 Verbena Canadensis Britton, Mem. Torr. 



Club, 5: 276. 1894. 



Perennial, pubescent or glabrate; stem 

 slender, usually branched, 8 / -i5 / high, the 

 branches ascending. Leaves membranous, 

 ovate in outline, petioled, i / -3 / long, trun- 

 cate or broadly cuueate at the base, irre- 

 gularly pinnately incised, often 3-cleft, the 

 lobes dentate; spikes peduncled, solitary 

 at the ends of the branches, dense, short 

 and capitate when in early flower, becom- 

 ing 2 / -4 / long in fruit; bracts linear-subu- 

 late, mostly shorter than the calyx; calyx- 

 teeth filiform-subulate; corolla io // -i2 // 

 long, blue, purple, white or in cultivation 

 variegated, its limb 6 // -io // broad, the 

 lobes oblong or obovate, emarginate or ob- 

 cordate; fruit 2' i ^ // -^ ) /, high. 



In dry soil, Illinois to Tennessee and Flor- 

 ida, west to Kansas, Mexico and New Mexico. 

 This and the next the source of many garden 

 and other hybrids. May-Aug. 



8. Verbena bipinnatifida Nutt. 

 Small-flowered Verbena. (Fig. 3064.) 



Verbena bipinnatifida Nutt. Journ. Acad. 



Phila. 2: 123. 1821. 

 Glandularia bipinnatifida Nutt. Trans. Am. 



Phil. Soc. (II.) 5: 184. 1833-37. 



Perennial, producing suckers, hirsute or 

 hispid; stems rather stout, mostly branched, 

 erect, 6 / -iS / high. Leaves firm, petioled 

 or the uppermost sessile, broadly ovate in 

 outline, deeply 1-2-pinnatifid into linear or 

 linear-oblong, obtuse or subacute lobes and 

 segments; spikes peduncled or sessile, 

 solitary at the ends of the branches, thick, 

 dense, at first short and capitate, becoming 

 2 / ~4 / long in fruit; bracts linear-subulate, 

 mostly shorter than the calyx; calyx-teeth 

 filiform-subulate; corolla 6 // -o/ / long, pur- 

 ple or lilac, the limb 4 // ~5 // broad, the lobes 

 emarginate or obcordate; fruit l% ,f -2." 

 high. 



On dry plains and prairies, Nebraska to 

 Texas and Chihuahua, west to Colorado and 

 Arizona. May-Sept. 



2. LIPPIA L, Sp. PI. 633. 1753. 

 Perennial herbs, or shrubs, with opposite, sometimes verticillate, or rarely alternate 

 leaves, and small bracted flowers, in axillary or terminal, mostly peduncled spikes or heads. 

 Calyx small, membranous, ovoid, campanulate or compressed and 2-winged, 2-4-toothed or 

 2-4-cleft. Corolla-tube straight or incurved, cylindric, the limb oblique, spreading, some- 

 what 2-lipped, 4-cleft, the lobes broad, often refuse or eroded. Stamens 4, didynamous, in- 

 cluded or exserted; anthers ovate, not appeudaged, the sacs nearly parallel. Ovary 2-celled; 

 ovules 1 in each cavity; style short; stigma oblique or recurved. Fruit dry, with a mem- 

 branous exocarp, at length separating into 4 nutlets. [Named in honor of Auguste Lippi, 

 1678-1703, a French naturalist.] 



About 100 species, most abundant in tropical and subtropical America, a few African. Besides 

 the following, about 6 others occur in the southern and southwestern United States. 

 Leaves spatulate, 2-8-toothed above; peduncles little exceeding the leaves. 1. L. cuneifolia. 



Leaves sharply serrate; peduncles much longer than the leaves. 



Leaves oblong or lanceolate, mostly acute. 2. L. lanceolata. 



Leaves spatulate or obovate, mostly obtuse. 3. L. nodiflora. 



