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. halimifolium Mill. 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, 1-1 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 Weep. 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, 
2in. 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 Pretunra. 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, 
