VEUBENACE^. (VERVAIN FAMILY.) 305 



4. DICLIPTERA, Juss. 



Calyx 5-partC(l, mostly leafy-bracted. Corolla bilabiate, mostly reversed ; the 

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

 one placed behind the other, t^apsulc oblong or oval, bearing 2 or 4 seeds be- 

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

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

 spike-like cymes. 



1. D. braehiata, Spreng. Smooth or nearly so; stem 6-angled, 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 braehiata, Pursh.) — River-banks, 

 Florida to North Carolina. July and Aug. — Stem 1° - 2° high. 



2. D. Halei, Riddell. Stem tomcntosc, mostly simple ; leaves ovate-lan- 

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

 upper surface and veins bcncatli 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, mucronate, short-stalked, and, 

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

 hairs; capsule oval, 4-seeded. (Justicia laetevirens, Buclclei/? Rhytoglossa 

 viridiflora, Nees.) — Shady banks of rivers, Florida, and westward. Juno- 

 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, tlie interior 

 ones subulate, the exterior larger and somewhat spatulate; calyx-lol)es 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. VERBENACEtE. (Vervain Family.) 



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

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

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

 or less 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- 

 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. 

 26* 



