97 
CALYSTEGIA spitham^a. 
Small upright Bear-bind. 
PENTANDRIA MONOGYNIA._Nat. Ord. CONVOLVULACEM. 
Gen. Char. — Calyx S-partitus, bracteis duabus foliaceis inclusus. Corolla 
campanulata, 5-plicata. Stamina subaequalia, limbo breviora. Ovarium 
semibiloculare, 4-spermum. Stylus indivisus. Stigmata 2, obtusa (tere- 
tia vel globosa). Capsula unilocularis. 
Herbce lactescentes, glabrae, volubiles v. prostratae ( extra tropicum provenientes J. 
Pedunculi solitarii, unijlori. — Br. 
Calystegia spithamaa ; erecta pubescens ; foliis subcordato-ovalibus ob- 
tusis, pedunculis unifloris foliis brevioribus, bracteis ovatis acutis, 
caule superne florifero. — Pursh. 
Calystegia spithamaea, Pursh, Fl, of N. Am. v. i. p. 143. 
Convolvulus spithamaeus, "Willd. Sp. PI. v. i. p. 873 Elliot's Bot. of S. 
Carol. Sf Georg. v. i. p. 251 — Hort. Kew. ed. 2. v. i. p. 33?. 
Root flagelliforrn, and much creeping, cylindrical, yellowish, perennial (not 
biennial, as mentioned in Hort. Kew.) Stem erect, about a span high in 
its native country, nearly a foot in height when cultivated, rounded, pu- 
bescent, simple or slightly branched, branches from the axils of the 
leaves. Leaves an inch and a half to two inches in length, cordato-ovate, 
obtuse, the lowermost ones broader, shorter, and more obtuse, all upon 
shortish footstalks, and pubescent. 
Flowers axillary, solitary, shorter than the leaves, large, handsome, white. 
Peduncles about two inches long, downy, triangular upwards. Bractece 
of two large, concave, ovate, acute, nerved, pubescent, opposite, erect 
leaflets. Calyx of 5 small, erect, glabrous, shining, pale leaflets, which 
are entirely covered and concealed by the bracteae. Corolla carapanulate, 
the limb spreading, large, cut into 5 obtuse, subcrenulate, rounded, pli- 
cate lobes. Stamens shorter than the tube. Filaments subulate, com- 
pressed, white, with yellowish glands at the margins. Anthers oblong, 
yellow. Pistil as long as the stamens. Germen small, 5-lobed. Style fi- 
liform, white. Stigmas two, rounded, incurved. 
Introduced to this country from North America by Wil- 
liam Hamilton, Esq. in 1796, according to Hortus Kew- 
VOL. II. 
