338 VERBENACE^. Verbena. 



ceolate, acute : fructiferous pedunculate spikes dense, oblong : fructiferous calyx with teeth 

 very much shorter than the oblong tube : corolla light purple : nutlets, &c., of V. AuUetia. 

 — Near Frontera, on the borders of Texas, and adjacent New Mexico, and Chihuahua, 

 Wright (no. IWi). 

 ^^V. vENOSA, Gillies & Hook., of S- America, one of the species cultivated for ornament, has 

 escaped into prairies in the vicinity of Houston, Texas. 



6. LIPPIA, L. {Dr. A. Lippi, killed in Abyssinia early in the 18th cen- 

 tury.) — Herbs or shrubs (American, mainly southern, a few African, &c., and one 

 or two widely dispersed species) ; with spikes or heads of small flowers, in summer. 

 Leaves often verticillate. 



§ 1. Aloysia, Schauer, Benth. & Hook. Flowers in slender and naked spikes, 

 with small and narrow bracts : calyx about equally 4-cleft, herbaceous, often 

 densely hirsute, the tube not compressed : nutlets thin-walled : shrubs, with foliage 

 commonly sweet-aromatic. — Aloysia, Ortega. (Z. citriodora, of Uruguay, with 

 smooth calyx, &c., is the Lemon Verbena shrub, of cultivation.) 



-L. lycioldes, Steud. Shrub 4 to 10 feet high, with long and slender branches, sometimes 

 spinescent, minutely puberulent ; leaves (3 to 12 Imes long) lanceolate-ohlong, obtuse, 

 l-nerved, scabrous above, pale beneath, veinless, small and entire on flowering branches, 

 larger and incised or few-toothed on strong sterile shoots : spikes axillary, racemose- 

 panicled, filiform : flowers white or tisiged violet (fragrance of vanilla). — Schauer in Fl. 

 Bras. ix. t. .36 & DC. Prodr. xi. 574. Verbena liffustrina, Lag. Nov. Gen. & Spec. 18. — Texas 

 to Arizona and " California," Coulter. (Mex., Uruguay, &c. ) 



-L. "Wrightii, Gray. Shrub 2 to 4 feet high, with many spreading slender branches, 

 minutely canescent-tomentose : leaves (4 to 8 lines long) orbicular-ovate, crenate, rugose, 

 abruptly short-petioled : spikes short-peduncled, densely flowered : calyx-teeth triangular : 

 corolla wliite, glabrous within : " odor of Sage." — Am. Jour. Sci. ser. 2, xvi. 98 ; Torr. in 

 Bot. Mex. Bound. 126. — S. W. Texas to Arizona, Thurher, Wright, Palmer, &c. (Adjacent 

 Mex., where var. macrostachya, Torr. 1. c, approaches L. scorodonioides, HBK., of S. Am.) 



§ 2. ZapXnia, Schauer, Benth. & Hook. Flowers capitate or in short and 



dense spikes, subtended and imbricated by broad bracts. 



* Bracts decussately 4-ranked, coinplicate-carinate, persistent: flowers very small. 



L. graveolens, HBK. Shrubby, 2 to 4 feet high, cinereous with close pubescence : leaves 

 ovate-oblong or oval, crenate-reticulate-rugose, hirsute-pubescent above, canescent beneath, 

 petioled : umbellate peduncles 3 to 6 in each axil, shorter than the leaves : bracts thin, 

 ovate, acute, silky, shorter than the yellowish-white salverforin corolla. — Nov. Gen. & 

 Spec. ii. 266 ; Schauer, 1. o. L. Berlandieri, Torr. 1. u., not Schauer. — Texas, along and 

 near the Rio Grande. (Mex., &c.) 



* * Bracts several-ranked, concave or flatfish : calyx thin, more or less compressed fore and aft 

 and the sides carinate. — § Znpanla, Schauer. 



•t— More or less shrubby, erect : heads on short axillary peduncles. 

 L. geminata, HBK. 1. c. Pubescent leaves ovate or oblong, closely serrate, triplinerved, 

 pinnately veined, and with rugose-reticulated veinlets, minutely strigose above, canescently 

 tomentose-pubescent beneath, petioled : peduncles mostly solitary in the axils, hardly 

 longer than the petiole : head globular, at length cylindraceous : bracts broadly ovate, 

 abruptly cuspidate-acuminate, villous-canescent, a little shorter than the purple or violet 

 corolla. (Fohage with odor of citron.) — Verbena tantanoldes, L. — S. Texas on the Rio 

 Grande. (Mex. to Uruguay.) 



* * Herbaceous, procumbent or creeping: pubescence of fine and close Ii.iirs fixed bv their middle 

 and both ends acute: peduncles chiefly axillary and slender: bracts closelv imbricated: calvx 

 stronicly flattened^ fore and aft, with cnrinale margins, and cleft into 2 lateral more ov less con- 

 duplicate lobes : limb of corolla manifestly bilabiate ; the smaller upper one retuse or emarginate: 

 pericarp crustaceous or corky, not readily separating into the two nutlets. 



, L. ouneifolia, Steud. Diffusely branched from a lignescent perennial base, procumbent 

 (not creeping), minutely canescent throughout : leaves rigid, cuneate-linear, sessile, incisely 



