200 FOUNDATIONS OF BOTANY 
acute at the apex, abruptly contracted to the short petiole, prickly 
on the veins. Racemes lateral, few-flowered; pedicels recurved in 
fruit. Calyx-lobes taper-pointed. Corolla deeply angular-lobed, 
blue or white; berry globose, smooth, yellow. A common weed.* 
4. S. rostratum, Dunal. Sanp Bur, Burratro Bur. Annual; 
the whole plant beset with yellow prickles; stem erect, diffusely 
branched, 1-2 ft. high. Leaves broadly oval or ovate in outline, 
deeply pinnately lobed or parted, petioled, downy, with star-shaped 
hairs. Racemes few-flowered; pedicels erect in fruit. Calyx very 
prickly, becoming enlarged and enclosing the fruit. Corolla bright 
yellow, 5-angled, about 1 in. broad. Introduced from the West, 
and becoming a troublesome weed in some places.* 
5. S. tuberosum, L. Irisn Poraro. Annual; stem diffusely 
branched, downy, underground branches numerous and tuber-bearing. 
Leaves irregularly pinnatifid and divided. Flowers in cymose clus- 
ters, white or purple, with prominent yellow anthers; pedicels 
jointed. Corolla 5-angled, 3-1 in. broad. Fruit a globose, greenish- 
yellow, many-seeded berry, about 3 in. in diameter. Cultivated from 
Chili.* 
Ill. LYCOPERSICUM, Tourn. 
Annual ; stem diffusely branched. Leaves pinnately divided. 
Flowers in raceme-like clusters on peduncles opposite the 
leaves. Calyx 5-many-parted, persistent. Corolla wheel- 
shaped, 5-6-parted. Stamens 5—6, inserted in the short tube 
of the corolla, filaments short, anthers elongated. Ovary 
2-several-celled, style and stigma simple. Fruit a many- 
seeded berry.* 
1. L. esculentum, Mill. Tomato. Stem diffusely branched, at 
length leaning over, furrowed and angled below, sticky-hairy, 3-5 
ft. long. Leaves irregularly lobed and pinnatifid, petioled. Calyx- 
lobes linear, about as long as the yellow corolla. Fruit (in the wild 
state) globose or ovoid, red or yellow, }—3 in. in diameter, but greatly 
enlarged in cultivation. Common in cultivation from tropical 
America.* 
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 funnel-form, 5-angled. Stamens 5, inserted in the 
