338 VERBENACEJC. 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. AuUelia. 

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

 Wri(jht (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. LilPPIA, 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. — Aloi/sia, Ortega. (L. citriodora, of Uruguay, with 

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



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

 spinescent, minutely puberulent: leaves (0 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, raccmose- 

 panicled, filiform : flowers wliite or tinged violet (fragrance of vanilla). — ScJiauer in Fl. 

 Bras. ix. t. o6 & DC. Prodr. xi. 574. Verbena lii/tistrina, Lag. Nov. Gen. & Spec. 18. — Texas 

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



L. W^riglltii, Gray. Siirub 2 to 4 feet higli, with many spreading slender branches, 

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

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

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

 Bot. Mex. Bound. 12G. — S. W. Texas to Arizona, Thurbcr, Wr'ujlit, Palmer, &c. (Adjacent 

 Mex., where var. macroslar/tya, 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, coniplieate-carinate. persistent: flowers very small. 



L. graveolens, HBK. Sltmbby, 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 G in each axil, shorter than the leaves: bracts thin, 

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

 Spec. ii. 260 ; Schauqj', I.e. L. Berlandieri, Tovr. 1. c, not Schauer. — Texas, along and 

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



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

 and the sides caviiiate. — § Zrqxniid, Schauer. 



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

 L. geminata, HBK. l-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 cjdindraceons : bracts broadly ovate, 

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

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

 Grande. (Mex. to Uruguay.) 



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

 and both ends acute: pedimcles chiefly axillary and slender: bracts closely imbricated: calyx 

 strongly flattened fore and aft, with caiiniite iiiargins, and cleft into 2 lateral more or less con- 



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

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



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

 (not creeping), nnnutely canescent throughout : leaves rigid, cuneate-Iinear, sessile, incisely 



