Order 93.— CONVOLVULACE^E. 57 1 



a Ovary 3-cellcd. Sti jma capitate, granulate, not lobcd Pn arbitis. 3 



a Ovary 4-celled. — Stamens includod. Corollas, large Batatas. 2 



— Stamens exserted. Corollas rather small Qi/amoclit. 1 



1. QUA'MOCLIT, Tourn. Cypress-vine. Sepals 5, mostly mucrori- 

 ato ; corolla tubular-cylindric, with a salver-form border; stamens ex- 

 serted ; style 1, stigma capitate, 2-lobed; ovary 4-cclled, cells 1-seedcd. 

 — Twining herbs, mostly American. (Fig. 303.) 



1 Q. vulgaris Choisy. Cypress- vixe. Lvs. pinnaiifid to tho midvein, segments 

 linear, parallel, acute; ped. l-flowered; sep. ovate-lanceolate. — (J)An exceed- 

 ingly delicate vine, Penn. (Eaton) and S. States generally cultivated. Stem* 

 glabrous, very slender, twining and climbing to tho height of 5 — lOf. Fls. much 

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

 rose-color. Trained upon twino it forms an exquisite awning. Julv, Aug. + § 

 E. lad. 



2 Q. coccinea Moencli. Lvs. cordate, acuminate, entire or angular at base ; ped. 

 elongated, about 5-flowered ; cal. awned. — 1) S. States, rare in the Western, 

 along rivers, frequent in gardens. Fls. very delicate, 1' long, limb spreading 0", 

 light scarlet, nearly entire. Jn. — Aug. (Ipomaea L.) 



2. BATATAS, Rumph. Sweet Potato. (The original Indian name 

 of the common potato, transferred.) Calyx of 5 sepals ; corolla cam- 

 panulate, with a spreading limb; stamens 5, included; style simple; 

 stigma capitate, 2-lobed ; capsule 4-celled, 4-valved, with 4 erect seeds. 

 — Herbs, or shrubby, chiefly American. Juico milky. 



1 B. littoralis Chois. Creeping, sonding out runners; lvs. smooth, potiolate, 

 thick, sinnate, with 3 to 5 rounded lobes, or somewhat panduriform, emarginate, 

 cordate; ped. l-flowered, as long as the leaf; sepals ovate, abruptly acuminate ; 

 seeds tomentous. — If Sand hills near the coast, S. Car. to Fla. Fls. large. Stain, 

 much shorter than the tnbe of the yellowish whito corolla. Sty. with 2 capitate 

 stigmas. Aug. — Oct. (Convolvulus L. C. obtusilobus Mi.) 



2 B. macrorhiza. Creeping or twining ; lvs. cordate, entire, sinuate or lobed, 

 tomentous-pubescent beneath; ped. 1 to ^-flowered, longer than tho petioles but 

 shorter than the leaves ; sep. ovate, obtuse; seeds villous with long hairs. — it 

 Sandy soil, islands of S. Car. and Ga, (Elliott). Rt. fusiform, attaining a largo 

 size. Sts. several feet in length, pubescent. Ped. 2 to 3' long. Cor. large, 

 purplish, white. Stam. barely included. Stig. 2, capitate. Jn. — Oct. (B. 

 Jalapa (?) Chois. Convolvulus Ell.) 



3 B. edulis Chois. Sweet Potato. Creeping, or twining ; lvs. variously 3 

 to 5-palmate or pedate-lobed or angled, lobes acute, base cordate with a broad sinus, 

 5-veined, smoothish ; ped. 3 to b-floivcred, as long or longer than the petioles. — U 

 Root bearing oblong, terete tubers which taper to both ends. Sts. 4 to 8f long. 

 Lvs. 2 to 5' long, on petioles 2 to G'. Fls. showy, rose-purple. % E. India. (Ton- 

 volvulus Batatas L.) — Extensively cultivated West and South for its rich, nu 

 tritious tubers. (Fig. 66.) 



3. PHAR'BITIS, Chois. Morning Glory. (German farbc, color ; 

 in reference to the brilliant flowers.) Calyx 5-sepaled ; corolla cam- 

 panulate or inclining to funnel-form; style single; stigma capitate, 

 granulate ; ovary 3 [rarely 4)-celled, cells 2-seeded. — Beautiful climb- 

 ing and twining herbs, everywhere cultivated for ornament. 



1 P. purpurea. St. climbing and twining, retrorsely pilous ; lvs. cordate, entire; 

 fl. nodding; ped. 2— 5-flowered ; pedicels thick; cal. hispid.— (D 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 

 oulture. Jn. § f (Fig. -19, 338.) (P. hispida Chois. Convolvulus L.) 



