ROLAXACF..K sritni'IU'I. MM \rK.V. 



331 



! 



P. violacea, Lindl. Pig. 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. 



.">. DATURA. Jamestown-weed " r Jimson-weed. 



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

 lar, short-lived flowers from the forks of the 

 branehes: stigma 2-parted: fruit a globular usually 

 prickly capsule, opening by 4 valves. 



D. Stramonium, Linn. Pig. 24S. 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 

 lonir: stL'tna not lobed: pod 2-4-valved, nol verj 

 lar^e, contained within the persistent calyx. 



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

 ft., with very large ovate decurrenl entire leave- and 

 rose-purple panicled flowers, Trop. Amer. 



N. alata, Link & Ott \ dens I. 



Pig. 191. Slender but tall (2-4 ft.) plant with clammy-pubescent berl 

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

 ."i i\ in. long, the limb unequal, Brazil; common In gardens. 



190. Petunia. 



Very near the original 



P. \ iolacea. 



I 

 191. Nieotiana alata. 



XXIII. SCROPHULARIACE^E. Piowort Family. 



Serbs (trees in warm countries . of various habit: flowers per- 

 fect, irregular, usually imperfectly f> merons: corolla usually 2 -lipped 



ami personate: stamens I in 2 pairs, Inserted on th rolla, with 



sometimes a rudimeirl of a flfth: ovary single, 2-loculi 

 into a several- or many-seeded capsule. Aboul K ra and 2 



species. Representative plants are flgwort, Bnapdrngon, toad flax, 

 foxglove, mullein, pentstemon, monkej flower or musk plant. 



a. Corolla shallow and nearlj regular ' 



,\ \. Corolla \ er> Irregular, often personate. 



b. Flower, with a long spur 



mi. Flower ipnrli 



i). Blossoms erect, swollen al th< bane .... i 



ho. Blossoms drooping, nol swollen, with narrow limb. I /' 



ddd. Blossoms not drooping, with 2 lipped limb M 



