verbexace.e. (vervain family.) 305 



4. DICLIPTERA, Juss. 



Calyx 5-partcd, mostly leafy-bracted. Corolla bilabiate, mostly reversed ; the 

 lower lip 3-lobed ; the upper 2-cleft or entire. Stamens 2 : anther-eells equal, 

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

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

 ple leaves, and purple, scarlet, or white flowers in axillary and terminal heads or 

 spike-like cymes. 



1. 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, mncronate, narrowed at the base, at length 

 inflated ; corolla small, purple. (Justicia brachiata, Pursh.) — River-banks, 

 Florida to North Carolina. July and Aug. — S'em 1° - 2° high. 



2. D. Halei, Riddcll. Stem tomentose, mostly simple ; 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, short-peduncled, leafy at the base, 

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

 like the linear-spatulate bracteoles, and subulate calyx-lobes, fringed with long 

 hairs ; capsule oval, 4-seeded. (Justicia la?tevirens, Buckley ? Rhytoglossa 

 viridiflora, Xees.) — Shady banks of rivers, Florida, and westward. June- 

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

 white. 



3. D. assurgeilS, 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 spatulate; calyx-lobes subulate, 

 unequal; corolla (scarlet) curved, nearly equally 2-lipped ; the upper lip entire, 

 the lower minutely 3-toothed ; anthers slightly exserted ; style hair-like, elon- 

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

 -12" long. 



Order 93. VERBEX ACE.E. (Vervain Family.) 



Chiefly herbs or shrubs, with 4-angled mostly rough stems, and oppo- 

 site and exstipulate leaves. Flowers spiked, capitate, or cyrnose. — Ca- 

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

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

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

 oennia) 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* 



