338 VERBEXACE.E. Vcrhena. 



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, 

 Wri/j/d (no. 1504). 



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. LifPPIA, 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,. (L. citriodora, oi Uruguay, with. 

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



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

 spinescent, minutely puberulent : leaves (3 to 12 lines long) lanceolate-oblong, obtuse, 

 1-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- 

 panick'd, filiform : flowers white or tinged violet (fragrance of vanilla). — Schauer in Fl. 

 Bras. ix. t. 36 & DC. Prodr. xi. 57-4. Verbena lifjustrina, 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 cancscent-tomentose : leaves (4 to 8 lines long) orbicular-ovate, crenate, rugose, 

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

 corolla white, glabroiis 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, complicate-carinate. persistent: flowers very small. 



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

 ovate-oblong or oval, crenate-rcticulate-rugose, hirsute-pubescent above, cancscent beneath, 

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

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

 Spec. ii. 266 ; Schauer, 1. c. L. Derlandieri, Torr. 1. c, 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. — § Zrtpunia, Schauer. 



-f— More or less shrubby, erect : heads on short axillary peduncles. 

 L. geminata, HBK.. i.e. Pubescent leaves ovate or oblong, closely serrate, triplinerved, 

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

 tnmentose-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. (Foliage witli odor of citron.) — Verbena lanlanoides, L. — S. Texas on the Rio 

 Grande. (Mex. to Uruguay.) 



* * Herbaceous, procumbent or creeping: pubescence of fine and close hairs fixed by their middle 

 and botii ends acute: peduncles chiefly axillary and slender: bracts closely imbricated: calyx 

 strnuiily flattened fore and aft, with carinate margins, and cleft into 2 lateral more or 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. 



Li. CUneifolia, Steud. Diffusely branched from a lignescent perennial base, procumbent 

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



