602 Obdeb 101.— NTCTAGINACEiE. 



equal ; anthers 6, subsessile upon the style ; stigma 6-lobed ; capsule 6- 

 celled, septicidal, many-seeded. — St. erect or twining. 



§ stern erect. Calyx tube sigmoid (i. e., twice bent like the letter 8) Nos- 1, 2 



§ Stem climbing. Calyx tube recurved, once bent upwards Nos. 3, 4 



1 A. Berpentaria L. Virginia Snake-eoot. St erect, flexuoua ; Ivs. petiolate, 

 oblong or ovate, thin, cordate, acuminate ; ped. radical, many bracted ; col. tvhe 

 smoothish, contracted in the midst, limb obscurely 2-lipped. — A curious vegetable 

 in hedges and thickets. Penn. to 111. and La. St 8 to 13' high, subsimple, jointed, 

 herbaceous. Lva. variable in width, 2 to 4' by 9" to 2' rarely larger. Fls. few. 

 Cal. dull purple, of a leathery texture, tubular, 7 to 9" long, twice bent almost 

 double, enlarged at each end, the limb with 3 short, obtuse lobes. Caps, obovate, 

 6-augled, 6 to 9" long. Jn., Jl. 



/3. 7 HASTATA. Lvs. lance-oblong, or oblong linear, auriculate at base, on pe- 

 tioles as short as the auricles. — S. Car. to La. St. very slender and usu- 

 ally simple. Pis. not seen. Lvs. 2 to 3' by 3 to 5"- (A. hastata Nutt.) 



2 A. reticulata Nutt. St. erect, very Sexuous, hirsute, simple; lvs. oval, sessile, 

 cordate-clasping with decussating lobes, apex obtuse or bluntly acute ; veinlots aiKl 

 veinulets finely reticulated, all prominent and hairy beneath ; ped. below the lvs., 

 simple or branched, hirsute, bracted ; cal. small, densely woolly. — La. (Hale.) About 

 If high. Fls. 5" long, about half the size of No. 1. Lva. rather thick, 3 to 4' by 

 2 to 3'. 



3 A. Sipho L'Her. Dutchman's Pipe. St. twining, shrubby ; lvs. glabrous, amr 

 pie, roundish, cordate, entire, petiolate ; ped. 1-flowered, furnished with a single, 

 ovate clasping bract; cal. tube bent, ascending, hmb 3-cleft, equal. — A vigorous 

 cUmber in mountainous woods, Western Penn. to Ky. and S. States. St woody, 

 twining, and ascending trees 30 to 40f. Leaves 6 — 12' diam., alternate, sprinkled 

 with soft hairs. Flowers solitary, the tube long (16") bent at nearly a right 

 angle, in the form of a (siphon or) tobacco pipe, and of a dull brown color. May, 

 Jn. f Highly ornamental for arbors. 



4 A. tomentosa Sims. Twining, shrubby ; lvs. downy or hairy beneath, roundish, 

 cordate, entire, petiolate, very veiny ; ped. solita/ry, 1-flowered, bractless; caL 

 downy, bent upwards, greenish-yellow, limb dark-purple, nearly equal, rugous, re- 

 flexed, 3-cleft, throat oblong and oblique, nearly closed. — "Woods along rivers, S. 

 111. to La. and 6a. St cUmbing tall trees 30 to 40f Lvs. 4 to 6' long, 3 to 4' 

 wide. Ped. as long as the petioles. Cal tube (20" long) contracted above the 

 ovaiy and strongly recurved. Stig. 3-lobed. May. Jn. 



Order CI. NYCTAGINACE^. Marvelwohts. 



Serbs (shrubs or trees) with tumid joints, entire and opposite leaves. Flowert 

 surrounded with an involucre (calyx-like when the flower is solitary). Calyx a deli- 

 cate, colored, funnel-form or tubular perianth, deciduous above the l-celled, 1-seeded 

 ovary, leaving its persistent base to harden and envelop the fruit (achenium) as a 

 kind of pericap. Stamens 1 to several, definite, slender, hypogynous, exserted, un- 

 equal. Embryo coiled around the copious white albumen. Fig. 373, 460. 



Oenera 16, species 110, chiefly tropical, south of the equator. 



Properties. — The roots are purgative, especially those of the beautiful cultivated gonus — 

 Four-o'clock. 



OENERA. 



* Involucre calyx -like, involving but a single, large flower Mirabilib. 1 



* Involucre involving several (3 to 5) small flowers Oxtbaphus. 2 



* Involucre none, the miaute flowers with deciduous bracts BotBHAAViA. 3 



I. ffllRAB'ILIS, L. Marvel op Peru. Four-o'clock. (Lat mira- 

 bilis, wonderful, admirable; a name well applied.) Involucre calyx-like, 

 6-Iobed, 1-fiowerod, lobes acuminate ; perianth (calyx) tubular-funnel- 



