Order 8f.— AOANTHACBjE. 535 



opposite, solitary or fascicled flowers. Bracts leafy, often stalked. Fls. 

 large, showy, blue or purple. 



1 D. strdpens Nees. Herb erect ; Iva. ovate or obovate-oWong, somewhat repand, 

 cuneaie at base and petiolaie, smooihish or thinly downy ; ped. axillary, very short, 

 about 3 (1 to 4)-flowered; bractlets lance-oval, equaling, or exceeding the calyx; 

 Sep. lance-linear, oiliate, a little shorter fh/m the tube of the loug-funnel-form corolla. 

 Dry soils, Mid. W. and S. States, common. Plant variable, 9 to 16' high, often 

 branched, nearly smooth. Lvs. large, 2 to 3' long, the fls. half or two-thirds as 

 long. Caps, oblanceolate, 6-seeded or by abortion fewer. Hooks grooved. Jn. — 

 Sept. (Ruellia strepena L.) 



2 D. ciliosus Neea. Herb erect, hoary-hirsute ; lvs. ovate, the lower obovate, 

 upper oblong, all obtusish at apex and abrupt at base, subsessile; fls. snbsessile, 

 with oblong or lanceolate bracts not longer than calyx ; sep. setaceous, havry, not 

 half as long as the long tube of the corolla. — Eich soils W. and S, States. Plant If 

 or more high. Lvs. 18 to 30" long, the fls. nearly as long. A variety has smaller 

 leaves almost dentate. (Ruellia ciliosa Ph.) 



p. HYBRIDUS. Low, decumbent, very hirsute. — Near Savannah (Feay). Stems 

 2 to 4' long, with short internodes. Pis. sometimes shortened. 



3 D. noctifldrus Ifees. — Cal. segm. linear-lanceolate, thrice shorter than the very 

 long corolla tube. Otherwise as in D. cihosus. — Ga. (near Savannah, Le Conte) 

 and Pla. (Ruellia tubiflora Le Conto.) 



5. CRYPHIACAW'THUS, Nees. (Gr. icpvcpiog, clandestine, dicavOog.) 

 Calyx deeply 5-parted, spreading in fruit ; corolla bell-funncl-form, 

 limb equal ; stamens 4, included ; anthers sagittate ; stigma simple ; 

 capsule oblong, terete, 12 to 1 6-seeded from the base ; seeds roundish, 

 cordate, compressed, silky, subtended with hooks. — Herbs villous, with 

 corm-like base and fasciculate roots. Ped. S-flowered. 



C. Barbadense Nees. Caulescent; lvs. ovate, cuneate at base and petiolate, 

 entire or undulate-dentate, smoothish or hairy ; ped. somewhat cymous, longer 

 than the petiole or even than the leaves ; oal. segm. subulate-acuminate, glandu- 

 lar, hirsute ; cor. tube shorter than the limb. — 71 A low, leafy plant, Ta. to Pla., 

 Tex. Mex. &c. (Nees). (Kuelha tuberosa and elandestina L.) 



6. HYGROPH'ILA, E. Br. (Gr. vyp-^, waters, (piXiw, to love.) 

 Calyx tubular, about half 5-cloft, with narrow, equal segments ; corolla 

 bilabiate, ringent, lower lip convex and rngulous in the midst, trifid ; 

 stamens 4, didynamous, not cxserted ; anther cells divergent-sagittate, 

 violet-colored ; stigma simple, subulate ; capsule G-striate, co-seeded 

 from the base ; seeds small. — Herbs in swamps, &c., stoloniforous, 

 4-angled. Fls. clustered in the axils. 



H. laoiistris Nees. Erect, subsimple, minutely pubescent ; lvs. lanceolate, 

 narrowed to both ends, sessile, subentire ; verticils many-floviered ; oal. smooth- 

 ish. — Borders of lakes near N. Orleans. (Hale). Stems 1 to 2f high above the 

 water, very straight and simple. Fls. white. (Ruellia just ioiseflora Hook.) 



7. DICLIP'TERA, Juss. (Gr. dig, double, kXeio), to shut; referring 

 to the 2-valved capsule.) Calyx 5-parted, equal, sessile, in a bracted 

 head ; corolla resupinate, bilabiate, upper lip 3-toothed ; stamens 2 ; 

 anther cells straight, placed one above the other ; capsule 4-seedcd ; 

 dissepiment and walls separating from the back of Ihc valves and curv- 

 ing upwards ; seeds discoid, on hooks. — Herbs with the small flowers 

 in axillary, involucrate, finally terminal heads. 



D. brachiata Spr. St. 6-angled, brachiate-branched, glabrous ; lvs. ovate-oblong, 

 subentire, obtusely acuminate, contracted at base to a long petiole ; hds. few- 

 flowered, sessile or the lower on a leafy peduncle, the upper at length spioato ; 

 involucrate lvs. very unequal ; capsule oval the valves first curving backwards, 



