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, 1-14’ 
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 D. resupinata. Also from Cienega, Arizona. 
TETRAMERIUM* HispripuM, Nees (7. nervosum, Nees, “var. hispidum folits 
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. /. c. were obtained. 
VERBENACE. 
_ Lippia Wricutu, Gray (Torr. in Bot. Mex. Bound. p. 126). (Aloysia 
scorodonoides, H. B. K. Nov. Gen. 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}’ 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. 
Lippta NopiFLoRrA, 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 
* TETRAMERIUM, Nees.—Herbaceous bracts narrow, more or less connate in pairs, including single 
flowers with or without rudiments of others. Calyx short, 5-cleft; lobes linear, delicate. 0 
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 wanes lobes 2 orales 3 is either coll. Capsule ovate-oblong, tapering into a 
solid stipe at base; placenta valves. Seeds 4, or fewer by abortion, 
plano-compressed, wab-orbisolat —Pabescent herbs,. often shrubby at base. Leaves entire. Flowers 
rather small, pallid.—Bentu. & Hoo 
