VERBENACEYE. 333 



TRIBE I. PIIRYMEJE. Ovary one-celled, and with a single erect or ascending 

 orthotropous ovule. Seed without albumen. Radicle superior: cotyledons broad, 

 convolute round their axis. Inflorescence centripetal. 



1. PHRYMA. Calyx cylindraceous, bilabiate ; upper lip of 3 setaceous-subulate teeth; 

 lower of '2 short subulate teeth. Corolla with cylindrical tube equalling the upper lip of 

 the calyx, and a bilabiate limb: upper lip almost erect, emarginate; lower much larger, 

 spreading, 3-lobed. Stamens didynamous, included : anthers 2-celled, opening longitudinally. 

 Style slender : stigma 2-clef t. Fruit a dry akene in the bottom of the calyx. Calyx 

 abruptly renexed on the axis of the spike in fruit, strongly ribbed, and closed by the 

 narrowing of the orifice : the long slender teeth hooked at the tip. 



TRIBE II. VERBEXEyE. Ovary, or at least the fruit, with 2 to 8 cells or nutlets: 

 ovules anatropous or nearly so, erect. Radicle accordingly inferior. Inflorescence 

 centripetal and simple; the flowers in the spike commonly alternate: bractlets 

 none. Leaves simple, sometimes divided, but not compound. Stamens in our 

 genera included and distinctly didynamous. 



* Flowers spicate or capitate. 

 H Calyx ampliate-globular and closed over the fruit. 



2. PRIVA. Flowers slender-spicate. Calyx at first cylindraceous, with 5 ribs produced 

 into short teeth, membranaceous and enlarging with and closely investing the dry indu- 

 rated fruit, which splits into a pair of 2-loedlate or by abortion 1-locdlate nutlets. 

 Corolla salverform, 5-lobed, obscurely bilabiate. 



H *- Calyx narrow, tubular, plicately 5-angled, 5-toothed, mostly enclosing the dry fruit : 

 corolla salverform ; limb somewhat equally or unequally 5-lobed : akenc-like nutlets 

 1-celled, 1-seeded. 



3. STACK YTARPHETA. Perfect stamens 2 (the anterior pair) and with divaricate 

 vertical anther-cells: posterior reduced to sterile filaments. Stigma terminal, orbicular, 

 subcapitate. Fruit separating into 2 oblong-linear nutlets. 



4. BOUCHEA. Perfect stamens 4: anthers ovate, the cells parallel. Stigma 2-lobed, 

 one lobe abortive, the other subclavate-stigmatose. Fruit separating into 2 nutlets. 

 Seed linear. 



5. VERBENA. Perfect stamens 4 : anthers ovate ; the cells nearly parallel. Stigma mostly 

 2-lobed ; anterior lobe larger ; posterior smooth and sterile. Fruit separating into 4 nutlets. 

 H- H -t- Calyx small and short : anthers short, the cells parallel : cells of the ovary and 



nutlets of the fruit 2, one-seeded : style mostly short : stigma thickish, mostly oblique. 



6. LIPPIA. 

 bicarins 



oblique or bilabiate, 4-lobed. 



7. L ANT AN A. Calvx very small and membranaceous, truncate or sinuate-toothed. 

 ' Limb of the corolla not bilabiate, obscurely irregular, 4-5-parted; the broad lobes obtuse 



or refuse; tube slender. Fruit drupaceous, merely girt at base by the calyx, fleshy or 



juicy ; its nutlets bony, mostly roughened. 



* * Flowers in open racemes, minutely bracteate : calyx tubular-campanulate, with trun- 

 cate minutely 5-toothed border: corolla salverform ; the 5-parted limb somewhat oblique 

 or unequal : "anther-cells parallel: ovules amphitropous : drupe juicy, containing 2 to 4 

 bilocellate 2-seeded bony nutlets : subtropical and tropical shrubs or trees. 



8. CITHAREXYLUM. Calyx in fruit girting the base of the drupe. Stigmas 2. Nut- 

 lets 2. Sterile fifth stamen present, rarely antheriferous. 



9. DURANTA. Calyx in fruit ampliate and enclosing the drupe. Corolla commonly 

 curved. Stigma unequally 4-lobed. Nutlets 4 : seeds therefore 8. 



TRIBE III. VITICE^E. Ovary, embryo, &c., of the preceding tribe. Ovules later- 

 ally affixed, amphitropous. Inflorescence centrifugal, cymose. 



1 0. CALLICARPA. Flowers 4-merous (rarely 5-merous in calyx and corolla), nearly regu- 

 lar. Calyx short, sinuately toothed. Corolla with short or campanulate tube. Stamens 

 4, equal, "exserted : anthers short; cells parallel. Style elongated: stigma capitate or 

 2-lobed. Baccate drupe small, the base subtended by the calyx, containing 4 small 

 1-seeded nutlets or by abortion fewer. Cymes axillary. 



TRIBE IV. AVICEXXIE^E. Ovary imperfectly 4-celled, with a central 4-winged 

 columella bearing 4 pendulous amphitropous ovules, these and the solitary seed des- 



LIPPIA. Calyx 2-4-cleft or toothed, ovoid, oblong-campanulate or compressed and 

 jicarinate, enclosing the dry fruit, which separates into 2 nutlets. Limb of corolla 



