450 ORDER LXXXVin. SOLANACEJE. 



large and small, oval, unequal at the base, minutely villous. Pedicels 

 articulated. Corolld plicate, 5-angled. — 0. South America. Potato. 

 Extensively cultivated as one of the most important agricultural 

 productions, especially in Europe and the Northern U. States. 



2. S. nodiflo'rum, (Jacq.) Stem herbaceous or suffructicose ; branches 

 terete, glabrous. Leaves glabrous, ovate, entire. Flowers sub-umbel- 

 late, numerous ; peduncles, pedicels, and calyx puberulent. Fruit 

 black, globose, shining. — White, yellowish at the base. So. Car., Geo., 

 and Flor. 2 feet. 



3. S. ni'grum, (L.) Stem erect, angled, glabrous, with the young 

 branches pubescent, unarmed. Leaves ovate-angled, dentate, tapering 

 at the base, on long petioles, sprinkled with hair. Flowers in 3 — 6- 

 flowered umbels, between the leaves. Calyx persistent, pubescent. 

 Corolla pubescent, with acute segments. Fruit black, many-seeded. — 

 White. If. Through the summer. Damp soils. Common. Nightshade. 



4. S. Ptycan'thum, (Duu.) Stem herbaceous, slender, hispid, angled. 

 Leaves petiolate, ovate-oblong, acuminate, acute at the base, pubescent, 

 paie beneath. Peduncles filiform, short, hirsute, 1 — 3 flowered. Calyx 

 5-cleft ; lobes ovate. Fruit globose. — White. Geo. 



5. S. mammo'sum, (L.) Stem prickly. Leaves cordate, angled, villous, 

 lobed, very broad, and prickly on both sides. Flowers in loose terminal 

 racemes and opposite. Fruit yellow, tapering at the base. — Yellow. 

 Q. June — Aug. Middle and southern Geo. 



6. S. Pu'milum, (Dun.) Steins pilose-hirsute, yellowish-red, numer- 

 ous, rooting. Leaves broad-ovate, obtuse, nearly entire, attenuate at 

 the base ; midrib spiny. Flowers in racemes, 3 — 5-flowered. Pedun- 

 cles filiform, long. Calyx red. — Purple. Middle Geo. 



7. S. Virginia'num, (L.) Stem erect, prickly ; branches angled. 

 Leaves pinnatifid, prickly, ciliate ; segments obtuse. Calyx prickly. 

 Fruit small, greenish-white. — White. July — Aug. Sandy soils. Com- 

 mon. 6 — 10 inches. 



8. S. Carolinen'se, (L.) Stem erect, with numerous expanding 

 branches, hairy, armed with stiff, sharp prickles. Leaves ovate-lanceo- 

 late, hastate, scabrous, prickly, covered with stellular pubescence. 

 Flowers in simple, lateral racemes. Calyx pubescent, prickly. — White. 

 If. May — July. Very common. 1 — 2 feet. Horse-nettle. 



9. S. esculen'tum, (Dun.) Stem herbaceous, spiny, or unarmed. 

 Leaves ovate, acuminate, repand or sinuate, tomentose, canescent, acu- 

 leate on the veins and petiole, unequal at the base. Flowers usually 

 solitary. Peduncle reflexed. Calyx tomentose, aculeate, 6 — 9-cleft, 

 persistent ; segments linear-lanceolate, increasing with the fruit. Co- 

 rolla 6 — 9-clett; segments broad. Stamens 6—9. Fruit large, smooth, 

 shining, obtuse at the apex, white or purple, 6 — 9-celled ; placentae 

 fleshy. Seeds numerous small, compressed. — Purple and yellow. East 

 Indies. Cultivated extensively for the table. Fgg-plant. Jew's-apple. 



Genus III.— PHYSA'LIS. L. 5—1. 

 (From the Greek phusa, a bladder, in allusion to the inflated calyx.) 



Calyx 5-cleft, increasing after flowering, becoming inflated. 

 Corolla rotate, 5-cleft. Stamens 5, connivent. Berry globose, 

 2-celled, inclosed in the inflated calyx. 



