Oeder 93.— CONVOLVTJLACEiK 571 



a OvftTy3-ccllo(l. Stijnia capitate, granulate, not lobod Pharbitis. 3 



a Ovary 4-celled. — Stamens included. Corollas, large Batatas. 3 



— Stamens oisorted. Corollas rather small Quamoolit. 1 



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

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

 serted ;. style 1, stigma capitate, 2-lobed; ovary 4-celled, cells 1-seeded. 

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



1 Q. vulgaris Choisy. Cypress- vine. Lvs. pinnaiifid to the midvein, segments 

 linear, parallel, acute; ped. l-flowered; sep. ovate-lanceolate. — (1) An exceed- 

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

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

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

 rose-color. Trained upon twine it forms an exquisite awning. July, Aug. f § 

 E. Ind. 



2 Q. coccfnea Moench. Lvs. cordate, acuminate, entire or angular at base ; ped. 

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

 along rivers, frequent in gardens. Fls. very delicate, 1' long, limb spreading 9", 

 light scarlet, nearly entire. Jn. — Aug. (Ipomasa 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-cellcd, 4-valved, with 4 erect seeds. 

 — 'Herbs, or shrubby, chiefly American. Juice milky. 



1 B. littoralls Chois. Creeping, sending out runners; lvs. smooth, petiolate, 

 tliiek, sinuate, with 3 to 5 rounded lobes, or somewhat panduriform, emarginate, 

 cordate; ped. 1-flowered, as long as the leaf; sepals ovate, abruptly acuminate ; 

 seeds tomentous. — y Sand hills near the coast, S. Oar. to Fla. Fls. large. Stam. 

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

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



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

 tomenious-pubeKent beneath ; ped. 1 to 5-flowered, longer than the petioles but 

 shorter than the leaves ; sep. ovate, obtuse ; seeds villous with long ban's. — y 

 Sandy soil, islands of S. Car. and Ga. (Elliott). Et. 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. ^dulis Chois. Sweet Potato. Creeping, or twining ; lvs. variously 3 

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

 5-veined, smoothish; ped. 3 to h-flowered, as long or longer than the petioles. — y 

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

 Lvs. 2 to 5' long, on petioles 2 to 6'. . Fls. showy, rose-purple. \ E. India. (Con- 

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

 tritious tubers. (Fig. 56.) 



3. PHAR'BITIS, Chois. Morninq Glory. (German /ar5e, 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. purpfkrea. St. climbing and twining, retroraely pilous ; lvs. cordate, entire; 

 fl. nodding; ped. 2 — 5-flowered; pedicels thick; cal. hispid. — (pin fields, Mii 

 and W. States. Stems climbing many feet. Leaves roundish, heart-shaped. 

 Flowers large, beautiful, generally of a dark purple, sometimes blue, flesh-colored, 

 striped, Ac. A well known and favorite climber and fi'ee flower, of the easiest 

 oulture. Jn. § t (Pig. 49, 338.) (P. hispida Chois. Convolvulus L.) 



