CALYsTEcii.v. XCVlll. (JOxN VOLVULACEiE. llo 



puhesc^t beneath ; pnL scarcely cqualin-i; the long petioles, 1 — 3-flo\vered ; si:p. 

 roundish-ovate, pubescent ; .srpr/.s- viilose, with long hairs. — 7^ Western States ! 

 Irequent, to Flor. and La. Stems -J — (it in length, on the ground, or trailing 

 over fences, Slc. Leaves 2 — 3' long, the petioles 2—5'. Corolla large T'Ji — 3' 

 diam.) and showy, uhit(; or rose-colored, purple at base. .July, Aug. — Tlie root 

 is tuberous and mildly [xirgative. 



8. C. Hatatas. (Datatas edulis. C/i/mij.) Sired Potato. — St. creeping, 

 rarely twining; /vs. rordate, hastate, angular, 5-veined, smoothish; ped. long; 

 /*•. I'ascick'il ; .sy;. lanceolate, acuminate. — Cl) The sweet potato is native of 

 both Indies and cultivated in all tropical climates. Not only the tubers, but 

 the leaves and tender shoots are boiled and eaten. The tubers are sweet and 

 considered nutritive. This is the po/olo of the old English botanists, of .Shake- 

 speare, and their coteuiporaries, the Su/a/iui/i tuhcrosam then being unknown. 

 The stem is round, liis|)i(l, ))rostrate, creeping, sending out scattered, oblong 

 tubers which are purplish without. Flowers large, purple or while. % 



2. aUAMOCLIT. Tourn. 



(r}'. Kvafios, a bean, K'Xirog, dwarf"; resembles the climbing bean, but smaller. 



Sepals 5, mostly niucronate ; cor. tubular-cylindric ; sta. exserted ; 

 sty. 1 ; stig. capitate, 2-lobed ; ovary 4-celled, cells 1 -seeded. — Twin- 

 ing herbs, moslh/ American. 



1. Cl. VULGARIS. Choisy. (Ipomoea. Linn. Convolvulus. 1st. edit.') Jasmine. 

 Bindweed. Cijprcss Vine. — £,i-s. pinnatifid to the midvein, segments linear, 



parallel, acute; ped. l-duw;-red; scp. ovate-lanceolate. — An exceedingly 

 delicate vine, Penn. Eaton, Southern States! generally cultivated. Stems gla- 

 brous, very slender, twining and climbing to the height of 5 — lOf Flowers 

 much smaller than those of the common morning glory, scarlet, varying to 

 crimson and rose-color. Trained upon twine it forms a most delicate and 

 beautiful awning. July, Aug. 



2. Cl. cocciNEA. Moench. (Iponicea. Linn. Convolvulus. Spreng.) 

 Lvs. cordate, acuminate, entire or angular at base ; ped. elongated, about 



5-flowered ; cal. awned. — (T) Southern States, naturalized in the Western, occa- 

 sionally cultivated. Flowers varying from yellow to .scarlet, f 



3. ST YL ISM A. Raf. 



The name has rererence to the plurality of the styles. 



Sepals 5, equal ; cor. campanulate ; ovary 2-celled ; styles 2, rarely 

 3. stigmas thick ; sta. included. — 4 Slender^ creeping. 



S. TENELi.us. Wood. (S. cvolvuloides.' Choisy. Convolvulus tenellus. 



Lam. C. Sherardi. P/i.)— Dry, sandy or rocky soils, Ohio, to Flor. _ Stem 

 long, prostrate, branching, pubescent. Leaves lance-linear or linear, obtuse, 1' 

 in length, with short petioles. Peduncles longer than the leaves, 1 — 5-flowered. 

 Sepals ovate-lanceolate, 3" long. Corolla twice longer, hairy outside. 



4. CALYSTEGIA. Br. 



Gr. Ka\v(, calyx, arcyrij a covering- ; alluding to the conspicuous calj'cine bracts. 



Calyx 5-parted, included in 2 large, foliaceous bracts ; cor. cam- 

 panulate, 5-plicate ; sta. subequal, shorter than the limb ; ova. half 

 bilocular, 4-ovuled ; sty. simple ; stig. 2, obtuse ; caps. 1 -celled, 4-seed- 

 ed. — Herbs ticining or prostrate. Ped. i-Jioicercd, solitary. 



I. C. spiTHAM^Ls. Br. (Convolvulus. Linn. C. stans. Michx.) Erect 

 Dindn-ced. — St. erect or assurgent; lvs. oblong-lanceolate, subcordate, 

 hoary-pubescent; ped. 1-flowercd, generally longer than the leaves. — % An 

 erect, downy species, {a span) 8 — 10' high, found in fields and hilly pastures, 

 Can. to Penn., W. to 111. Stem branching, lealy, bearing one, olten two or 

 more large, white flowers, on peduncles 2—4' long, i.ssuing from near the root. 

 Leaves 2 — 3' long, h as wide, oval, with an abrupt, cordate base, and on peti- 

 oles i as long. Bracts concealing the calvx. June. 



