SCEOPHULAEIACEAE. ' 387 



repand-dentate, the slender petioles 3-7 cm. long; calyx about 6 em. long, its 

 ovate lobes acute or sbort-acuminate; corolla violet without, white within, 

 14-18 cm. long; capsule ovoid, erect, 4^6 cm. long, its stout prickles corrugated 

 at the base. 



Waste places at Port Howe, Cnt Island : — southern Tnited States ; West Indies ; 

 continental tropical America ; Old World tropics. Gahden Datura. Beli>fi,oweb. 



7. NICOTIAJSTA [Tourn.] L. Sp. PI. 180. 1753. 



Viscid-pubescent narcotic herbs or shrubs, with large alternate entire or 

 slightly undulate leaves, and white yellow greenish or purplish flowers, in 

 terminal racemes or panicles. Calyx tubular-campanulate or ovoid, 5-cleft. 

 Corolla-tube usually longer than the limb, 5-lobed, the lobes spreading. 

 Stamens 5, inserted on the tube of the corolla; filaments filiform; anther- 

 sacs longitudinally dehiscent. Ovary 2-eelled (rarely 4-celled) ; style slender; 

 stigma capitate. Capsule 2-valved, or sometimes 4-valTefI at the summit. 

 Seeds numerous, small. [Named for John Nicot, French ambassador to 

 Portugal, who sent some species to Catherine de Medici, about 1560.] About 

 50 species, mostly natives of America, the following typical. 



1. Nicotiana Tabacum L. Sp. PI. 180. 1753. 



Annual, 1-2 m. high, little branched or simple-stemmed. Leaves oblong 

 to oblong-lanceolate, 1-3 dm. long, sessile, acute or acuminate at the apex, 

 narrowed at the base, the lower ones decurrent on the stem; calyx about 12 

 mm. long, its lobes ovate; corolla funnelform, about 5 em. long, pink, its 

 lobes triangular-subulate; capsule longer than the caJyx. 



Spontaneous in waste places. Great Bahama : — widely cultivated and spontaneous 

 after cultivation in warm and tropical regions. Native of South America. Tobacco. 



Family 10. SCROPHULARIACEAE Lindl. 



FiGwoET Family. 



Herbs, shrubs or trees, v^ith estipulate leaves, and perfect, mostly com- 

 plete and irregular flowers (corolla wanting in one species of Synthyris) . 

 Calyx inferior, persistent, ■t-5-tootlied, -cleft, or -divided, or sometimes 

 split on the lower side, of on both sides, the lobes or segments valvate, 

 imbricate or distinct in the bud. Corolla gamopetalous, the limb 2-lipped, 

 or nearly regular. Stamens 2, 4 or 5, didynamous, or nearly equal, inserted 

 on the corolla and alternate with its lobes; anthers 2-eeUed; the sacs equal, 

 or unequal, or sometimes confluent into one. Disk present or obsolete. 

 Pistil 1, entire or 2-lobed; ovary superior, 2-celled, or rarely 1-celled; 

 ovules anatropous or amphitropous, on axile placentae; style slender, 

 simple; stigma entire, 2-lobed or 2-lamellate. Fruit mostly capsular and 

 septicidally or loeulicidally dehiscent. Seeds mostly numerous; endosperm 

 fleshy; embryo small, straight or slightly curved; cotyledons little broader 

 than the radicle. About 165 genera and 2,700 species, widely distributed. 



Upper lip or lobes of the corolla external in tlie bud, or wanting. 



Corolla-tube with a sac on the lower side ; vines. 1. Maurandya. 



Corolla-tube without a sac. 



Flowers cymose; our species a shrub. 2. Russellia. 



Flowers solitary, racemose or spicate; herbaceous plants. 

 Anther-bearing stamens 4 (rarely 5) ; corolla 2-lipped 

 or nearly regular. 



