340 Solanaceae 
BB. Not climbing nor twining; leaves either entire or else some of them irregular- 
dentate or -lobed. 
C. Annual; hairs simple; corolla 8—10 mm. wide; leaves not all entire, often 
rounded or cordate at base; berry green or black or yellow. 
D. Leaves oblong, pinnately 7—9-lobed; berries green. E. 
S. triforum Nutt. (Wild Tomato) 
DD. Leaves ovate, merely wavy-toothed; berries black or yellow. 
E. Plant nearly glabrous; filaments hairy; berry black. W. C. E. 
S. nigrum L. (Common Nightshade) 
EE. Plant viscid-pubescent or villous; filaments glabrous; berry yellow. U. 
(S. villosum.) S. nigrum villosum L. 
CC.. Perennial; hairs stellate; corolla 16—20 mm. wide; leaves all entire, acute 
or narrowed at base; berry purple. U. 
S. umbelliferum Esch. 
AA. Plant prickly; corolla 25-50 mm. wide; anthers tapering upward; calyx in fruit 
spiny, nearly or wholly covering the berry. 
F. Corolla white or light blue; anthers equal; fruit only partly covered by the calyx. 
W S. sisymbrifolium Lam. 
FF. Corolla yellow; anthers unequal, the lowest much the longest; fruit quite cov- 
ered by the calyx. E.  §. rostratum Dum. (Buffalo Bur) 
DATURA THORN-APPLE 
Herbs, annual (ours) or perennial, erect, tall, branching, narcotic. Leaves entire 
or sinuate-dentate or lobed. Flowers large, solitary in the forks of the stem, erect, short- 
peduncled, white or purple or violet. Calyx elongated-tubular or prismatic, circumscissile 
near the persistent base (ours). Corolla funnelform; limb plicate; lobes wide, acuminate. 
Stamens at or below the middle of corolla-tube. Ovary 2-celled or falsely 4-celled; 
stigma slightly 2-lobed. Capsule globose or ovoid, prickly, 4-valved from tip or bursting 
irregularly. (From tatorah, the Arabic name. ) 
A. Stem green; corolla white; lower prickles of the fruit shorter than the others. E. 
D. stramonium L. (Stramonium) 
AA. Stem purple; corolla purple or violet; prickles of the fruit all of the same length. 
D. tatula L. (Purple Thorn-apple) 
NICOTIANA TOBACCO 
Herbs, annual or perennial. Leaves large, simple. Flowers rather large, white 
(ours) or yellow or green (ours) or purple, in terminal racemes or panicles, often bracted. 
Calyx tubular-campanulate or ovoid, 5—8-cleft, at least its lower part persistent. Corolla 
funnelform or salverform, plicate, limb 5—8-lobed. Ovary 2—8-celled; stigma capi- 
tate or 2-lobed. Capsule septicidal and mostly also loculicidal at tip. Seeds very small, 
granulate or rugose. (Honor of J. Nicot, a French Ambassador, who early sent tobacco 
seed to Italy.) 
A. Leaves all with slender petioles; corolla-limb 8—12 mm. wide; calyx-teeth much 
shorter than its tube. E. N. attenuata Torr. , 
AA. Leaves or some of the upper ones sessile; corolla-limb 20-—40 mm. wide; calyx- 
teeth about equaling its tube. 
B. Corolla 25—50 mm. long; capsule 2-celled. U. 
N. bigelovii Wats. 
BB. Corolla 20—25 mm. long; capsule 3—8-celled. 

