VEKBENACEJE. (^VERVAIN FAMILY.) 291 



1. VERBENA, luurn. Vkuvain. 

 Some mere weeds, otliers ornaniout:il, ami many spontaneous hybrids. 

 * Flowers small or comjiarativel// su, in narrow sjilkes: anthers nuai>inmlaged. 

 ■*- Bj-acts inconftpicuoiis, not exaftlitifj the Jhicers. 



1. V. hastata, L. TaW, 3 to e feet hit/h: puhcsrence short, sjKtrse and hir- 

 sute or scabrous: leaves oblonj^-lauceolate gradually acuniinalo, cuarsely or 

 inciselif sen-ate, petioled, some of the lower commonly Inustate 3-l<jl.fMl :it lm»c ; 

 spikes numerous in a panicle, dense, naked at base or more or less jtedunrled : 

 corolla blue. — In waste grounds and along roadsides, across the continent. 



2. v. Stricta, Vent. Erect, rather stout, a foot or tuo hlffh: puUscenrr 

 gofer and denser: leares cinereous with dense sof hirsute-villous pultesrfnre, thick- 

 ish, rugose-veiny, ovate or oblong, nearli/ sessile, ren/ sliar/il'/ and denseh/ 

 viostlij doubl'i serrate, rarely incised : spikes comparatively thick, dense kith 

 in flower and fruit, canesceut, mostli/ sessile or leaf],/-br(i<t(<l at busr : corolla 

 blue, 4 or 5 lines long. — From New Mexico to the Dakotas and eastward to 

 Texas and Ohio. 



-I- H- Bracts rigid and someirhat foliaceous, exceed inr/ the fowers. 



3. V. bracteosa, Michx. Mudi branched from the base, diffuse or de- 

 cumbent, hirsute : leaves cuneate-oblong or cuneate-obovate, narrowed mostly 

 into a short margined petiole, pinnately incised or 3-cleft, and coarsely dentate: 

 spikes terminating the brandies: lowest bracts often jiinnatifid or incised: 

 the others lanceolate, acuminate, entire, rigid : corolla purjilish or blue, very 

 small. — Across the continent. 



* * Flowers more showi/, at first depressed-capitate, becoming spicate in fruit : 

 anthers of the larger stamens appendaged hi/ a gland on the connective : tuU 

 of corolla at the u})per part lined with reflexed bristlg hairs. 



4. V. bipinnatifida, Nutt. A span to a foot high, hispid-hirsute, root- 

 ing from subterranean branches : leaves H 'o 4 inches long, biinnnatilif jntrted^ 

 or 3-parted into more or less bipinnatijid divisions : bracts setaceous-attenuate, 

 mostl'j surpassing the calgx : hmb of the bluis!i-purple or lilac corolla 4 or 5 lines 

 broad ; lobes obcordate : commissure of the nutlets usuallg retrorsel'/ scabrous or 

 hispididous. — ridius and prairies, from Arkansas and Texas to the mountains 

 of Colorado. 



5. V. Aubletia, L. A foot or less high, branching and ascending from 

 a creeping or rooting base, soft-pubescent, hirsute, or glabrate : leaves I ur 2 

 inches long, ovate or ovate-oblong in outline, with truncate or broadlif runrnte 

 base tapering into a margined petiole, inciselg lobed and toothed, often nu»re 

 deeply 3-cleft : bracts subulate or linear-attenuate, shorter than or equalling tit* 

 calijx: limb of the reddish-purple or lilac (or white) corollt h or % inch broad: 

 commissure of the nutlets minutelg white-dotted or nearli/ smooth. — Vrom the 

 Rocky Mountains eastward across the continent. 



2. LIPPIA, L. 



In ours the flowers are capitate or in short dense spikes, subtended and 

 imbricated by broad bracts; the peduncles chiefly axilbiry. 



