PENTANDRIA. MONOGYNIA. 12§ 



United States. It is scarcely probable that these two in- 

 sulated species originated in Europe. 



197. ^ANDROCERA.f (Solanum species.) 



Calix veiitricose, border 5-cleft, at length 

 deciduous. Corolla monopetalous, rotate, sub- 

 ringent, 5-cleft. Stamina unconnected, un- 

 equal, declined, the fifth corniform and much 

 larger than the rest; anthers opening by two 

 terminal pores. Style simple, declined; stigma 

 0. Berry dry, included in the valvular base of 

 the calix. Seed immarginate, rugose. 



Habit similar to Solanum; flowers in erect lateral ra- 

 cemes, irregularly rotate, yellow; anthers separate, one of 

 them remarkably produced; seeds resembling those oi 

 Datura. 



Species. 1. A. lobata, aculeate, hirsute, and herbace- 

 ous; leaves by pairs, pinnatifidly lobed, segments obtuse, 

 obsoletely crenate, and undulate; racemes lateral, many- 

 flowered. 



Solanum heterandrum. Pursh. Flor. Am. i p. 156, and 

 Suppl. ii. p. 730. tab. 7. 



Root annual, fibrous. Stem thorny, branched, and pu- 

 bescent as well as every other part of the plant; pubes- 

 cence stellate. Leaves petiolate, by pairs, nerves beset 

 with prickles, for the most part simply pinnatifid, and 

 somewhat ovate. Racemes lateral, many-flowered, flowers 

 pedunculate. Calix small, with a ventricose base; limb 

 5-cleft, segments linear, acute, deciduous after the en- 

 largement of the spherical base. Corolla large, irregularly 

 rotate, plaited, externally hirsute, the two lower segments 

 divaricate and acuminate. Stamina short, separated, an- 

 thers declined, one of them twice as large as the rest. 

 Style declined, incurved, obtuse; stigma indistinct. Berry 

 dry, 1-celled? included in the spherical spiny base of the 

 caiix, the base dividhig at length into 5 valves. Seeds 

 numerous, nearly black, rugose, angular, compressed, and 

 somewhat reniform, but without margin. 



Habitat. Near the banks of the Missouri, in arid, 

 denudated soils, from the confluence of the river Platte 



f From tftvef , a man, (also the anther, or masculine organ of 

 plants), and »e^c4?, a horn; in allusion to the corniform appear- 

 ance of one of the anthers- 



