442 XCVIIl. CONVOLVULACER. Convenronen: 
simple ; stig. simple or 2-lobed; caps. valvate, 2—4-celled, 4—6- 
seeded.—A large genus of twining or prostrate herbs, rarely shrubby or 
arborescent. 
Obs.—The generic distinctions adopted by Choisy in the Prodromus of De Candolle, Vol. ix., appear to 
me to be too indefinite to be generally useful in a work like the present. I have adopted them merely as 
sections of the present genus. 
§ 1. Stigmas 2, linear-cylindric, often revolute. Capsule 2-celled. 
1. C. arvensis. Small Bindweed. 
St. striate, angular, generally prostrate ; lvs. sagittate, somewhat auricu- 
late; ped. mostly 1-flowered, bibracteate near the apex; sep. roundish-ovate ; 
caps. smooth.—2, A twining plant, growing in fields and pastures, Maine to 
Car., not common. Stems several feet long, climbing or prostrate, a little hairy. 
Leaves 1—2’ long, the lower ones obtuse. Flowers small, white, often with a 
tinge of red. The small, acute bracts are near the middle of the peduncle. Jn. 
2. C. Tricdtor. Tricolored Bindweed.—WSt. ascending, villose; lvs. lance- 
obovate, subspatulate, sessile, ciliate at base; ped. 1-fiowered, bracteate, longer 
than the leaves; sep. ovate-lanceolate, acute; cor. tricolored; capsule villose.— 
@) About the Mediterranean. Stem weak, 1—3f long. Corollas yellowish in 
the centre, white in the middle, and of a fine sky-blue on the upper part of the 
border. July. 
§ 2. Irpoma@a. Stigma capitate, entire or 2-lobed. Capsule 2-celled, 4-seeded. 
3. C. pANDURATUS. (Ipomoea. Meyer.) Wild Potato. Man-of-the-earth. 
St. twining ; lvs, broad-cordate or panduriform; ped. long, 1—4-flowered ; 
cal. smooth; cor. tubular-campanulate.—2, In sandy fields, N. Y.toGa. Stems 
several from the same root, 4—8f long, slender, smooth. Leaves 2—3/ long and 
of about the same width, acute or obtuse, with rounded lobes at the base, some- 
times lobed and hollowed on the sides and becoming fiddle-shaped. Petioles 
2—3’ long. Peduncles axillary, longer than the petioles, generally branching 
at the top, and bearing several large flowers, Corolla 2’ long, purple and white. 
July, Aug. 
4. C. racunosus. (C. micranthus. Riddell.) Small-flowered Bindweed. 
Minutely pubescent; sé. twining; vs. cordate, acuminate, angular-lobed 
or entire, on long petioles; ped. 1—3-flowered, half as long as the petioles; sep. 
oblong-lanceolate, acute, half as long as the corolla, ciliate, lobes acute; caps. 
pilose.—@) Penn., Md.! to’ Flor., W. to Ohio and Ill. A small, prostrate spe- 
cies, 2—6f long, in dry fields and hills. Leaves 2’ by 14’, deeply cordate; often 
deeply 3-lobed! petioles 1—3’ long. Flowers 8” diam., 9” long, white with a 
purplish rim. Aug. Sept. 
§ 3. Puarsitis. Stigma capitate, granulate. Ovary 3- rarely 4celled, 
cells 2-seeded. 
5. C. purpurevus. (Ipomeea. Ph. Pharbitis hispida. Choisy.) Common 
Morning Glory.—St. climbing and twining, retrorsely pilose; /vs. cordate, 
entire; fl. nodding ; ped. 2—5-flowered ; pedicels thick; cal. hispid.—q@) In fields, 
Mid. and W. States. Stems climbing many feet. Leaves roundish, heart- 
shaped. Flowers large, beautiful, generally of a dark purple, sometimes blue, 
flesh-colored, striped, &c. A well known and favorite climber and free flower, 
of the easiest culture. Jn. § Tf 
6. C. Ni. (Pharbitis. Choisy.) Morning Glory. 
Iws. cordate, 3-lobed; fis. half 5-cleft; ped. shorter than the petioles, 1—3- 
flowered.—A very beautiful twining plant, found wild, Penn. to Flor., but best 
known as a garden annual. Stem and leaves somewhat hairy. Calyx very 
hairy, the segments long-acuminate. Flowers large, the tube white and the 
border of a clear blue color (whence its specific name, Anil or Nil, indigo). 
It is of the easiest culture, and raised from the seed. Blossoms from July to 
September. + 
§ 4. Bararas. Stig. capitate, 2-lobed. Ova. 4-, or by abortion, 3—2-celled. 
7. C, Jauipa. (C. macrorhizus. Ell. Batatas Jalapa. Choisy.) 
St. creeping or twining; /vs. cordate, entire, sinuate or lobed, tomentose- 
