IPOMEA JALAPA,. 
Steps. Few, large, with mucilaginous albumen. Cotyle- 
dons foliaceous or wanting. 
Tue Seconpary CHARACTERS. 
_leomma. Sepals five. Corolla campanulate. Stamens in- 
cluded. Style one. Stigma two-lobed, the lobes capitate. 
Ovary two-celled. Cells two-seeded. Capsule two-celled. 
Calyx five-cleft, naked. Corolla funnel or bell form, with five folds. Stigma 
globe-headed, papillose. Capsule two or three-celled, many-seeded. 
Tue Spreciric CHARACTERS. 
Ipom#a Javapa. Roots tuberose, incrassated, perennial. 
Stems annual, twining, branched, smooth. Leaves ovate, 
acuminate, cordate at the base, quite entire, and smooth on 
both sides. Peduncles one to three-flowered. Sepals unequal, 
obtuse, smooth. Corolla salver-shaped, with a subclavate, 
cylindrical tube, and a subpentagonal, horizontally expanded 
limb. Stamens exserted. 
Forse § ovate, obscurely obtuse, spreading, villose underneath. Peduncles one- 
wered 
Tue ArtiriciaL CHARACTERS. 
Cuass Pentanpria. Stamens five. Orver MonoeyYntia. 
Monopetalous. Flowers inferior. Corolla regular. Herbs 
rarely shrubby. Stamens alternate with petals. Fruit cap- 
sule or berry. Cells with one or two seeds. Corolla limb 
entire. 
NATURAL HISTORY. 
This species of Convo.vutus is a native of South America, 
taking its name from Jalapa, a city of Mexico in Vera Cruz, 
in the neighborhood of which it grows, at a height of about 
six thousand feet above the level of the sea. Jalapa is the 
only market for the root, whence it is exported by the way 
of Vera Cruz. It might probably be cultivated in the south- 
ern section of the United States. It delights in rich, light 
soil, and young cuttings root freely in sand under’ a hand- 
_— It flowers in August and September. 
_ The root i is oP ase of an aati Naa and a dark, 
