to add, that we proceed no further with those modern 
writers whom we follow in this particular, and that on the 
contrary, we are persuaded that the group now formed 
by the union of Ipomsea and Convolvulus contains, within 
itself, the rudiments of more than one well-marked genus, 
besides the Callistogia of Mr. Brown, thei Argyreiai of Lou- 
reiro, or Lettsomia of Roxb., and the Dufourea of Kunth. 
Stem annual, twining, round, smooth, as are all the 
parts, except the young shoots, which are slightly y. 
Leaves smooth, sometimes 3-lobed, deeply cor >_ 
minate, sometimes entire, roundish-cordate acuminate 
Peduncles many-flowered, shoiter than petioles. Calyxes 
leafy, smooth; their sepals much shorter than the co¬ 
rolla. Corolla of a beautiful rose colour, with a sub- 
cylindrical inflated tube, and a spreading 5-toothed limb 
shorter than the tube. Stigma capitate, 2-lobed, about the 
length of stamens. j ^ 
