SOLAN ACEAE (POTATO FAMILY) 197 



Stamens as many as corolla lobes, alternate with them, on the 

 corolla tube, all equal in length and perfect. Ovary terete, superior, 

 2-8-celled; style I. Fruit a berry or a capsule. Seeds many. 



A. Corolla rotate or campanulate; fruit a berry. 

 B. Leaves pinnate, leaflets 5 or more. 



C. Flowers yellow; fruit yellow or red. W. E. — Cultivated. (Gk. lykos = 

 a wolf, persikos = the peach.) Lycopersicum esculentum (tomato) 



CC. Flowers white to blue; fruit green. SOLANTJM (p. ig?) 



BB. Leaves entire to 3-foUolate. 



D. Flowers solitary in the leaf-axils; calyx in fruit enlarged, bladdery ; corolla 

 campanulate; anthers distinct. PHYSALIS (p. 197) 



DD. Flowers in clusters; calyx in fruit not conspicuously enlarged, not bladdery ; 

 corolla rotate; anthers closely fitted together into a cone. 



SOLANUM (p. 197) 

 AA. Corolla tubular or salverform or funnelform; fruit a capsule. 

 E. Leaves dentate; flowers solitary in the forks of the stems; capsule prickly. 



DATURA (p. 198) 

 EE. Leaves entire; flowers In clusters; capsule not prickly. NICOTIANA (p. 198) 



PHYSALIS (Ground Cherry) 



Herbs. Leaves entire or sinuately toothed. Calyx campanulate, 

 S-io-angled or -ribbed, wholly inclosing the fruit. Corolla whitish or 

 yellowish, with dark center, plicate. Stamens near base of corolla. Seeds 

 kidney-shaped. — (Gk. physalis = a bladder, from the inflated calyx.) 



A. Annual; leaves ovate to cordate, or rarely some lanceolate, some of them always 

 somewhat sinuate-toothed. 

 B. Plant glabrous or merely puberulent; calyx in fruit obscurely s-io-angled. E. 



P. ixocarpa (tomatillo) 

 BB. Plant pubescent; calyx in fruit sharply s-angled. E. P. pubescens 



AA. Perennial; leaves lanceolate to oblanceolate, entire or sinuate but not sinuate- 

 toothed. E. P. lanceolata 



SOLANUM (Nightshade) 



Herbs or shrubs. Leaves alternate, entire to pinnate. Corolla limb 

 plicate. Stamens on throat of corolla. — (Said to be from L. solamen = 

 quieting; the Bittersweet is mildly narcotic.) 



A. Plant not prickly; corolla 8-20 mm. wide; calyx in fruit riot spiny, not nearly 

 covering the berry. 

 B. Climbing; perennial. W. E. — Medicinal. S. dulcamara (bittersweet) 



BB. Not climbing nor twining. 

 C. Leaves pinnate; tubers present. W. E. — Cultivated for the tubers. W. E. 



S. tuberosum (potato) 

 CC. Leaves entire to 3-foHolate; tubers none. 

 D. Annual; hairs simple; corolla 8-10 mm. wide; leaves not all entire, often 

 rounded or cordate at base; berry green or black or yellow. 

 E. Leaves oblong, pinnately 7-9-lobed; berries green. E. — Poisonous. 



S. triflorum (wild tomato) 



