216 KEY AND FLORA 



or axillary. Calyx persistent, 4-5-lobed or toothed, not en- 

 larged in fruit. Corolla funnelform or bell-shaped, the limb 4-5- 

 lobed, the lobes obtuse. Stamens 4-5, projecting. Ovary 2-celled ; 

 style single ; stigma obtuse. Fruit a many-seeded berry.* 



1. L. halimifoliumMill. Matrimony Vine. Stem slender, branch- 

 ing, twining or trailing, 6-15 ft. long ; branches angled, spiny. Leaves 

 elliptical, smooth, entire, sessile or short-petioled. Flowers solitary 

 or few in the axils ; peduncles long and slender. Corolla spreading, 

 greenish-purple, ^-h in. wide. Berry oval, orange-red. Introduced 

 from Africa, and often planted for covering trellises.* 



IV. DATURA L. 



Annual or perennial, strong-scented herbs ; stems tall and 

 branching. Leaves petioled, entire or lobed. Flowers large, soli- 

 tary in the forks of the branches. Calyx tubular, 5-toothed or 

 lobed, the upper part deciduous and the lower persistent. Corolla 

 funnelform, 5-angled. Stamens 5, inserted in the 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. Naturalized from Asia (?).* 



2. D. Tatula L. Taller, with a purple stem ; flowers rather later 

 than No. 1. Corolla violet-tinged. Naturalized from tropical America. 



V. PETUNIA Juss. 



Herbs ; leaves alternate and entire. Divisions of the calyx 

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

 not perfectly actinomorphic. Stamens 5, somewhat unequal 

 in length, inserted in the middle of the corolla tube and not 

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

 small seeds. 



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

 reclining. Leaves covered with clammy down. Corolla varying 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. 



