SCROPHULAEIACEAE. 387 



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

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

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

 at the base. 



Waste places at Port Howe. Cat Island: — southern T'nited States; West Indies; 

 continental tropical America ; Old World tropics. Garden Datura. Bell-flower. 



7. NICOTIANA [Tourn.l 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-celled (rarely 4-celled) ; style slender; 

 stigma capitate. Capsule 2-valved, or sometimes 4-valved 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. ISO. 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 cm. long, pi-nk, its 

 lobes triangular-subulate; capsule longer than the calyx. 



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. 



FiGwoRT Family. 



Herbs, shrubs or trees, with estipulate leaves, and perfect, mostly com- 

 plete and irregular flowers (corolla wanting in one species of Sy)2thi/ris). 

 Calyx inferior, persistent, 4-5-toothed, -cleft, or -divided, or sometimes 

 split on the low-er side, or 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-celled; 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 loculicidally dehiscent. Seeds mostly numerous : endospenn 

 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 the 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. RusseUia. 



Flowers solitary, racemose or spicate ; herbaceous plants. 

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

 or nearly regular. 



