ing acute or obtuse teeth, short-strigose and very scabrous above, subglabrate 

 to puberulent or hirtellous on the venation beneath, often sub-bullate above; pe- 

 duncles 3-9 cm. long, usually slightly surpassing the leaves, subglabrate to his- 

 pidulous; bractlets narrow-lanceolate or oblong, 4-9 mm. long, 1-2 mm. wide, 

 acute, strigillose, the innermost usually one half the length of the corolla, the 

 outermost often larger and forming an involucre subequaling the corolla tube; 

 heads hemispheric, 2-3 cm. wide, densely many-flowered, not elongating; corolla 

 very showy, yellow to orange or red, the tube 7-10 mm. long, densely pubescent 

 outside, limb 5-9 mm. wide; fruit black or dark-blue, edible. 



Fields, thickets, swamps, rich sandy woods, scrub, gravelly hills, flats, bank 

 of streams, chaparral and roadsides, often in large patches, almost throughout 

 Tex., except the n.w., N.M. (Moldenke) and Ariz. (Pima Co.); also cult, and in 

 Calif., n. Mex., and introd. in N.C. and Miss. 



4. Lippia Houst. Lippia 



A genus of about 206 species and 44 named forms and varieties, widely distrib- 

 uted in subtropical and tropical America; a few also in tropical portions of the 

 Old World. 



1. Lippia alba (Mill.) N. E. Br. Bushy Lippia, alfombrilla, cidrilla, hierba 



BUENA, OREGANO DE BURRO, SALVA DO BRASIL, SALVA COLORADO, TE DE CAS- 

 TILLA, TORONJIL DE ESPANA, HIERBA NEGRA, HIERBA DEL NEGRO. 



Aromatic shrub to 2 m. tall, usually much-branched, with long rooting suckers 

 at base; branches elongate, slender, ascending, pubescent; leaves often ternate; 

 petioles 3-8 mm. long, gray-pubescent; leaf blades ovate or oblong, 2-7 cm. long, 

 12-23 mm. wide, acute or obtuse, serrate or serrulate except at base, cuneately 

 narrowed into petiole at base, puberulent or strigose-hirtellous and rugose (when 

 mature) above, densely short-pubescent or tomentose beneath; inflorescence ax- 

 illary, capitate, mostly much shorter than the leaves or only subequaling the petiole, 

 solitary or rarely paired in all the upper leaf axils; heads subglobose or short- 

 oblong, 8-12 mm. long; bractlets ovate, 3-5 mm. long, the lowermost 3-3.5 mm. 

 wide, nearly as long as the corollas; corolla purple to violet, pink or white, the 

 tube 4-5 mm. long. L. geminata H.B.K. 



Woods, low wettish bottomlands, river banks and resacas, Hidalgo and Cameron 

 COS. n.e. to Wharton Co. in Tex., Mar.-Oct.; widespread in W.L, Mex., C.A. and 

 S.A., introd. elsewhere, widely cult. 



5. Phyla Lour. Frog-fruit 



Perennial procumbent or creeping herbs, with trailing or ascending stems, 

 sometimes somewhat woody at base or even shrubby, subglabrate or appressed- 

 strigose with more or less cinereous malpighiaceous hairs; leaves opposite, var- 

 iously dentate except at the base, flat or pinnately plicatulate above; inflorescence 

 spicate, axillary; spikes cylindric, very densely many-flowered, usually greatly 

 elongate in fruit, solitary or paired or ternate in the leaf axils, never aggregated 

 into corymbs or panicles; flowers small, sessile, borne singly in the axils of small 

 cuneate-obovate or flabelliform bractlets, not at all 4-ranked; otherwise with char- 

 acters of Lippia. 



A genus of about 10 species and 10 named forms and varieties, widely distrib- 

 uted in subtropical and tropical America; a few introduced in the warmer parts of 

 the Old World. 



1. Leaf blades mostly widest at or below the middle, toothed from below the 



middle to the apex (2) 

 L Leaf blade mostly widest toward the apex and toothed only near the apex (4) 



1401 



