220 BOTANY. 



ing the special peduncle; bracts ovate-cordate, 2-5-flowered (some of 

 them aborting); flowers 8-10" long, light purple, lower lip 3-toothed, upper 

 lip ovate. Very variable in foliage and inflorescence. — Cienega, Southern 

 Arizona. Besides this form, I have another resembling it in all respects, 

 save that the inflorescence is more simple ; two or three peduncles, 1-1£' 

 long, rising from the axils at a node, and each terminated by a single pair of 

 the usual ovate-cordate bracts. This difference is constant in my specimen 

 (571), and might entitle it to a specific rank were it not for the variability 

 in just this respect in B. resupinata. Also from Cienega, Arizona. 



Tetramebium* hispidum, Nees (T. nervosum, Nees, "v&r. hispidum foliis 

 ovato-oblongis obtusiusculis vel acutis {non acuminatis)", Torr. Bot. Mex. Bound, 

 p. 125). — Bracts conspicuously ciliate, oblong; flower yellowish- white (with 

 the anthers visible through a lobe of the lower lip as a brown spot), 5-7" 

 long. — In the Sanoita Valley, Arizona (686), near (probably) where the 

 specimens described in Bot. Mex. Bound. I. c. were obtained. 



VERBENACE^. 



Lipfia Wkightii, Gray (Torr. in Bot. Mex. Bound, p. 126). (Aloysia 

 scorodonoides, H. B. K. Nov. Gren. et Sp. 2, p. 260, is a different plant.) — Shrub, 

 2-4 feet high, much branched ; leaves oval, 3-8" long, thickish, deeply crenate, 

 rugose above and white tomentose-pubescent below, abruptly tapering to a 

 short petiole ; hairy spikes 1-1 J' long, paniculate ; flowers white, 1-2" long, 

 tubular, with a spreading, subregular border ; stamens subequal, short. 

 Calyx with long, spreading, white hairs. The mature fruit readily separates 

 into two nutlets. — Mount Turnbull (170 a, Loew), and elsewhere in Arizona. 



Lippia nodifloea, Michx. — Herbaceous or somewhat woody ; stem 

 creeping, rooting at the joints ; peduncles long, slender ; entire plant finely 

 pubescent ; leaves oblanceolate or cuneate, serrate toward the apex ; white 



* Teteamerium, Nees. — Herbaceous bracts narrow, more or Ibbs connate in pairs, including single 

 flowers with or without rudiments of others. Calyx short, 5-cleft ; lobes linear, delicate. Tube of co- 

 rolla slender, cylindrical ; limb 2-lipped, the hinder lip interior, obovate or oblong, erect, entire, con- 

 cave, the lower lip 3-parted, with the oblong lobes flat, spreading, the middle one outside. Stamens 2, 

 inserted in the throat and sub-equalling the corolla ; anthers 2-celled, the equal, pointless, parallel cells 

 separated by a broadish connective ; staminodia 0. Disk rather thick. Style filiform, the stigmatose 

 subclavate apex with 2 very short lobes ; 2 ovules in either cell. Capsule ovate-oblong, tapering intd a 

 solid stipe at base ; placenta during dehiscence torn loose from the valves. Seeds 4, or fewer by abortion, 

 piano-compressed, sub-orbicular. — Pubescent herbs, often shrubby at base. Leaves entire. Flowers 

 rather small, pallid.— Benth. & Hook. 



