DICOTYLEDONOUS PLANTS 201 



corolla-tube. Ovary 2-celled or imperfectly 4-celled ; style 

 filiform ; stigma 2-lobed. Fruit a spiny, 4-valved, many-seeded 

 capsule.* 



1. D. Stramonium, L. Jimson-weed. Annual ; stem smooth, 

 green, stout, forking above, 1—4 ft. high. Leaves ovate to oblong- 

 ovate, acute at the apex, narrowed at the base, sinuate-toothed, 

 petioled. Calyx 5-angled. Corolla white, about 4 in. long. Capsule 

 ovoid, erect, 2 in. long. A common weed ; poisonous. Introduced 

 from Asia.* 



3. D. Tatula, L. TaUer, with a purple stem. Flowers rather 

 later than No. 1 ; corolla violet-tinged. 



V. PETUNIA, Juss. 



Herbs ; leaves alternate and entire. Divisions of the calyx 

 oblong-spatulate. Corolla showy, spreading funnel-shaped, 

 not perfectly regular. Stamens 5, somewhat unequal in 

 length, inserted in the middle of the corollartube and not 

 projecting beyond it. Capsule 2-ceUed, containing many very 

 small seeds. 



1. P. violacea, Lindl. Common Petunia. Stems rather weak 

 and reclining. Leaves covered with clammy down. Corolla vary- 

 ing from pale pink to bright purplish-red, often variegated, with 

 a broad, inflated tube, which is hardly twice as long as the calyx. 

 Cultivated annual from South America. 



2. P. nyctaginiflora, Juss. White Petunia. Leaves somewhat 

 petioled. Tube of corolla long and slender. Flowers white. Culti- 

 vated from South America. This and the preceding species much 

 mixed by hybridization. 



89. SCROPHUXARIACE.^. Fig wort Family. 



Mostly herbs, with irregular flowers. Calyx free from the 

 ovary and persistent. Corolla 2-lipped or otherwise more or 

 less irregular. Stamens usually 2 long and 2 short, or only 

 2 in all, inserted on the corolla-tube, often 1 or 3 of them 

 imperfectly developed. Pistil consisting of a 2-celled and 

 usually many-ovuled ovary, with a single style and an entire 

 or 2-lobed stigma. 



