SOLANACE.E SCROPHULARIACE^E 



331 



P. violacea, Lindl. Fig. 490. Weaker and more diffuse : corolla purple 

 or rose, the tube short and broad: leaves ovate or oval, nearly or quite 

 sessile. The garden petunias are mostly hybrids of the two species. 



5, DATURA. JAMESTOWN -WEED or JIM SON-WEED. 



Very strong bushy herbs, with large, long-tubu- 

 lar, short-lived flowers from the forks of the 

 branches : stigma 2-parted : fruit a globular usually 

 prickly capsule, opening by 4 valves. 



D. Stramdnium, Linn. Fig. 248. Annual, 3-5 

 ft., the stem green: leaves ovate, sinuate or angled: 

 corolla white. Tropics ; com- 

 mon weed. 



D - Tatula, Linn. Stem 

 and corolla purple. 



6. NICOTIANA. TOBACCO. 

 Tall herbs, with large 

 usually pubescent leaves : 



corolla funnelform or salverform, the tube usually 

 long: stigma not lobed: pod 2-4-valved, not very 

 large, contained within the persistent calyx. 



N. Tabacum, Linn. Tobacco. Robust annual, 4-6 

 ft., with very large ovate decurrent entire leaves and 

 rose-purple panicled flowers. Trop. Amer. 



N. alata, Link & Otto (N. a f finis of gardens). 

 Fig. 491. Slender but tall (2-4 ft.) plant with clammy-pubescent herbage: 

 leaves lanceolate or obovate, entire: flowers white, with very slender tube 

 5-6 in. long, the limb unequal. Brazil; common in gardens. 



490. Petunia. 



Very near the original 



P. violacea. 



491. Nicotiaua alata. 



XXIII. SCROPHULARIACE^E. FIGWORT FAMILY. 



Herbs (trees in warm countries), of various habit: flowers per- 

 fect, irregular, usually imperfectly 5-merous: corolla usually 2-lipped 

 and personate: stamens 4 in 2 pairs, inserted on the corolla, with 

 sometimes a rudiment of a fifth: ovary single, 2-loculed, ripening 

 into a several- or many-seeded capsule. About 160 genera and 2,000 

 species. Representative plants are figwort, snapdragon, toad-flax, 

 foxglove, mullein, pentstemon, monkey-flower or musk-plant. 



A. Corolla shallow and nearly regular 1. Verbascum 



AA. Corolla very irregular, often personate. 



B. Flower with a long spur 2. Linaria 



BB. Flower spurless. 



D. Blossoms erect, swollen at the base 3. Antirrhimim 



DD. Blossoms drooping, not swollen, with narrow limb.. 4. Digitalis 

 DDD. Blossoms not drooping, with 2-lipped limb 5. Mimulus 



