27 
JACQUEMONTIA canescens. 
Hoary Jacquemontia. 
PENTANDRIA MONOGYNIA. 
Nat. ord. CONVOLVULACEZ=. (BINDWEEDS, Vegetable Kingdom, p.630.) 
JACQUEMONTIA.—Sepala 5. Corolla campanulata. Stylus unicus. 
Stigmata 2, ovato complanata. Ovarium biloculare, 4-ovulatum. Capsula 
2-locularis.—— Herbse aut suffrutices ; ex America species omnes que satis 
notce, — Choisy in DC. Prodr. ix. 396. 
J. canescens ; scabro-pubescens, foliis oblongis cordatis acutis longé petiolatis, 
cymis pedunculatis densifloris petiolo longioribus, sepalis oblongis ob- 
tusis corollà multó brevioribus. 
Jacq. canescens, Benth. pl. Hartweg. no. 1234. Lindl. in Hort. Soc. Journal, 
1. 298. i 
J. violacea B, Choisy, l. c. 
Convolvulus canescens, H. B. Kunth nov. gen. & sp. 3. 99. 
Convolvulus polyanthus, Schlecht & Chamisso in Linnea, 1830. p. 117. 
The type of the genus Jacquemontia is the old Convol- 
vulus pentanthus, of which M. Choisy now regards this as a 
variety. It differs from Pharbitis in having but two cells in 
the ovary ; from Ipomea, in the lobes of its stigma being flat 
not spherical; and from Convolvulus, in their not being 
long and narrow. 
The following account is given of it in the Journal of the 
Horticultural Society :— 
« Raised from seeds, collected by Mr. Hartweg near the 
village of Fusagasuga, in the province of Bogota. 
* A perennial twining plant, with the stems and leaves 
closely covered with a short down, which is brown and white, 
and by no means justifies the name of canescens given the 
species by M. Kunth. The leaves are about two inches long, 
ofa firm texture, concave, heart-shaped at the base, with an 
oblong outline which is rather wavy. The flowers grow in 
close cymes of from nine to eleven each, on stalks somewhat 
shorter than the leaves. They are of a clear bright blue, 
