VEnnKNAcr.-K. (vervain family.) 305 



4. DICLIPTERA, Juss. 



Calyx 5-partc(1, mostly Icafy-hractcd. Corolla bilabiate, mostly reversed ; the 

 lower lip 3-lol)ed ; tiie upper 2-clefc or entire. Stamens 2 : anthcr-eclls equal, 

 one placed behind the other. Capsule oblong or oval, bearing 2 or 4 seeds be- 

 low thft middle ; the partitions at length free from the valves. — Herbs, with sim- 

 ple Iciivcs, and purple, searlct, or white flowers in axillary and terminal heads or 

 spike-like cymes. 



I • D. brachiata, Spreng. Smooth or nearly so ; stem 6-anglcd, with 

 numerous spreading branches ; leaves thin, oblong-ovate, acuminate, abruptly 

 contracted into a long and slender petiole ; spikes solitary or 2 - 3 together, 

 interrupted, unequal ; bracts oblong, mucronate, narrowed at the base, at length 

 inflated ; corolla small, purple. (Justicia brachiata, Piirsh.) — Kivcr-banks, 

 Florida to North Carolina. July and Aug. — Stem l°-2° high. 



2. D. Halei, Riddell. Stem tomentose, mostly sira])le ; leaves ovate-lan- 

 ceolate, acuminate but rather obtuse, tapering into a petiole, sprinkled on the 

 upper surface and veins beneath with very short hairs ; the lower ones smaller 

 and obtuse ; spikes axillary and terminal, sliort-peduncled, leafy at the base, 

 compact, few-flowered ; bracts oblong or. oval, mucronate, short-stalked, and, 

 like the linear-spatulatc bracteolcs, and subulate calyx-lol)es, fringed with long 

 hairs; capsule oval, 4-socdcd. (Justicia liEtevirens, Buckle//? Rhytoglossa 

 viridiflora, Nc-es.) — Sliady banks of rivers, Florida, and westward. June- 

 September. — Stem ^°-2° high. Leaves 2' -4' long. Corolla 4" -5" long, 

 white. 



3. D. assurgens, Juss. Smooth or minutely pubescent; stem angled, 

 much branched ; leaves elliptical, acute, on slender petioles; flowers mostly 

 single, scattered in 1-sided spike-like cymes; bracts small, unequal, the interior 

 ones subulate, the exterior larger and somewhat spatulatc; calyx-lol)es subulate, 

 unequal; corolla (scarlet) curved, nearly ecpially 2-lipped ; the upper lij) entire, 

 the lower minutely 3-tootlicd ; anthei's slightly exserted ; style hair-like, elon- 

 gated — South Florida, — Stem 1° - 2° high. Leaves 1' -2' long. Corolla 9" 

 - 12" long. 



Ordi-u 90. VERBENACE^. (Vervain Family.) 



Chiefly herbs or shrubs, with 4-angle(l mostly rough stems, and oppo- 

 site and e.xstipulate leaves. Flowers spiked, capitate, or cynioso. — Ca- 

 lyx 4 - .5-cleft or parted, free. Corolla regular and salver-shaped, or more 

 or less bilabiate, 4 - o-lobed. Stamens 4-5, inserted on the tube of the 

 corolla: anthers 2-celled. Ovary entire, 1-8-ceUed, Avith 1 or (in Avi- 

 cennia) 2 ovules in each cell. Style simple, terminal. Fruit dry or bac- 

 cate, 1 -8-celled, commonly separable into as many 1-seeded indehiscent 

 nutlets. Albumen scarce or none. Embryo straight. 

 2G* 



