498 PENTANDRTA MONOGYNIA. Ipomoed. 



offensive prickles. Leaves scattered, petioled, cordate, point- 

 ed, generally entire, though sometimes a little lobed, or angu- 

 lar, smooth, about three or four inches long and three broad. 

 Petioles round, smooth, length of the leaves. Peduncles 

 axillary, smooth, clubbed, length of the petioles or more, from 

 two to four flowered. Flowers remarkably large, the border 

 being from four to six inches in diameter, pure white, delight- 

 fully but faintly fragrant, opening at sun-set, and drooping 

 at day-light. Tube very long, cylindric. Stigma double. 

 Capsules ovate, smooth, two-celled, four-valvcd. Seeds four, 

 viz. two in each cell, smooth, black. 



Obs. Till I observed Gsertner's figures of the capsule and 

 seeds of Ipomoea bona-nox 1 considered this to be that plant. 

 Dr. Konig* also thought it was bona-nox and I think he said 

 Linnaeus the son had committed a mistake when (in the Sup- 

 plementnm Plantar unii) he called this plant Convolvulus 

 grandijlorus, instead of Ipomoea f/randijlora. 



2. I. salicifolia. R. 



Leaves linear-lanceolate, acuminate. Peduncles one to 

 three-flowered, length of the petioles. 



Found by Dr. Buchanan in the district of Rungpore in 

 Bengal. In the Botanic garden at Calcutta it is biennial, flow- 

 ering in the rainy season. 



Stem and branches twining to a moderate extent, round, 

 and smooth. Leaves short-petioled, linear-lanceolate, taper- 

 ing* from the rounded base into a long, slender, acute point, 

 entire, smooth on both sides, from three to eight inches long*, 

 and scarcely one broad at the broadest part. Peduncles axil- 

 lary, solitary, half an inch long, bearing one, two, or three 

 large, pure white flowers. Calyx ; leaflets five, ovate, smooth. 

 Carol with a cylindric tube of about an inch and a half in 

 length, border flat, obscurely divided. Stamina hid in the 

 tube of the corol. Stirjma of two round lobes. Capsul's 

 two-celled, with three seeds in each. 



