46 



NAT. ORDER. CO?JVOLVULACE^ 



ovate, acuuiliiatctl, sonictiincs entire, sometimes angularly sinuatcd, 

 or crenated ; pedmicles thick, one to four-llowered ; bracteate at the 

 apex ; outer sepals the largest, ovate-roundish ; root thick and pur- 

 gatlA'e ; corolla campanulate, twice as large as the calyx, white ; 

 capsule showy, size of a nut. The bark of the roots is employed by 

 the natives of the East Indies as a purgative, which they use fresh, 

 rubbed up fresh. About six inches of the root in length tliey reckon 

 a dose. Cattle do not eat the plant. The root being free from nau- 

 seous taste and smell, gives it a decided superiority over Jalap, for 

 which it might be substituted. It is a native of the East Indies, on 

 the banks of the Hoogly and Ganges. It flowers from March tiU 

 June. 



Ipomcea Bogotcnsis. Bogota Ipomcea. Tliis is a twining shrub, 

 with a branched, angular stem, clothed with canescent villi and re- 

 trogi'ade hairs ; leaves ovate, deeply cordate, acuminated, beset with 

 silky strigoe above, and hoary tomentum beneath, about two inches 

 ong, and the hinder lobes approximate ; pedmicles many flowered, 

 shorter than the leaves ; sepals sUky hispid, oblong-lanceolate, subu- 

 ately acuminated, and nearly equal ; corolla purple, downy outside 

 towards the apex, twice as long as the calyx ; capsule glabrous. It 

 is a native of New Granada, on high planes. 



Ipomcea /(istigkUa. Fastigiate Ipomcea. This is a twining, glab- 

 rous plant ; leaves cordate acuminated and mucronulate, entire, sin- 

 uated, fiddle-shaped, or tliree lobed, and like the young branches, 

 often tinged with purple, particularly the margins, veins and nerves ; 

 peduncles exceedmg the petioles, from three to twelve flowered, 

 cymose ; sepals lanceolate, mucronately a\^iied ; outer ones shortest ; 

 stolons long, creeping along the earth ; corolla showy, piu-ple, glab- 

 rous ; capsule smooth ; seeds glabrous. Native of the West India 

 Islands, Guiana, and Bengal. It flowers in June, July and August. 



Propagation and Culture. All the species of fpomcsa are very 



