VERBENACE.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-cells 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. Herbs, 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-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 brachiata, Pursh.) River-banks, 

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



2. D. Halei, Riddell. Stem tomentose, mostly simple ; leaves ovate-hm- 

 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, mucronate, short-stalked, and, 

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

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

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

 September. Stem J-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 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" lone. 



ORDER 93. VERBENACE^. (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* 



