ORDER LXXXVI. CONVOLY CLACK.E. 415 



2. C. aquat'icls, (W.alt.) >S;cm tomcntose. Leaves oh\ot^o\nlv, on 

 short petioles ; peduncles generally 3-flo\vered, sometimes us long as 

 the leaves. Corolla hairy. Capsule tomentose. — Kose-color, IC. 

 Through the summer. Middle and lower Geo. 



Stylisma convolvuloides, Chois. 



S. C. SPiTiiAM^'us, (L.) Stem erect, branching, pubescent. Leaves 

 cordate or oval, pubescent. Flowers solitary, on axillary peduncles; 

 bracts longer than the calyx. — White. If. June — July. In drj 

 soils. 



4. C. obtusilo'bus, (Mich.) Stem prostrate, glabrous, branching. 

 Leaves alternate, sinuate-lobed, nearly hastate, emarginate. Flourn, 

 on peduncles, with 2 small leaves near the middle. Corolla large, with 

 a yellow tube and white limb. Style 2-cleft. — U- Aug. — Oct. On 

 the coast. Batatus litoralis, Chois. 



5. C. purpu'reus, (L.) Stem twining, hairy. Leaves cordate, entire ; 

 peduncles 1 — 3-flowered. Calyx hairy. Corolla funnel-shaped. — Blue, 

 purple, or white. %. Through the summer. Introduced. 



Mornii\g-(jlory 



6. C. Macrorhi'zus, (Ell.) Root very large, white, forinaceous, in- 

 eipid. Stem twining, pubescent, somewhat angled. Leaves cordate, 

 entire or lobed, pubescent underneath, the young leaves tomentose, 

 acute ; peduncles 1 — 5-flowered. Calyx pubescent. Corolla with the 

 limb obscurely 10-lobed, pubescent on the outer surface. Stameyts un- 

 equal. Style 2-cleft. Capsule 2 — 3-celled. Seeds hairy. — White, 

 tinged with purple. 2^. June — Oct. Is. of Car. and Geo. 



Batatus jalapa, Chois. 



7. C. bata'tas, (L.) Stem creeping. Leaves very various, cordate 

 often variously angled and divided, usually with long petioles; pe- 

 duncles 3 — 4-flowered, equaling in length the petioles. Sepals usually 

 acuminate, mucronate. Corolla campanulate. — Various shades of pink 

 and purple. From the East Indies; now cultivated in all warm coun- 

 tries for its valuable root. Sweet Potato. 



8. C. pandura'tus, (L.) Root large. Ste^n terete, nearly glabrous 

 young branches pubescent. Leaves cordate, entire or 3-loL)ed, mucro- 

 nate, pubescent ; peduncles 1 — 5-flowered, stipulate. Corolla with the 

 limb -lightly lobed. Style simple. — White and purple. If. May — 

 Aug In dry soils. Wild Potato-vine. Ipomoea punduratus, Mey 



9. C. saqittifo'lius, (Mich.) Stetn twining, terete, glabrous. Leaves 

 glabrous, sagittate, with long, acute, diverging auricles ; peduncles ax- 

 illary, 1-flowered, solitary, bracteate. Style 2-cleft. Capsule 2-celled. 

 — Purple. If. Through the summer. On the coast. 



10. C. re'pens, (Ell.) Ste7ii twining, pubescent. Xtairs. sagittate, 

 with obtuse or truncate auricles, entire, pubescent, on long petioles; 

 peduncles axillary, solitary, 1-flowered, thickened toward tlie summit, 

 pubescent. Calyx bracteate. Corolla with a long tube, the limb ob- 

 scurely 4-lobed. Style slightly 2-cleft. Capsule 3-celled. — White, 

 tinged with red. U- April — May. On the coast 



11. C. tamnifo'lius, (Ell.) Stem twining, terete, hairy. Leaves cor- 

 date, slightly undulate, acuminate, entire, with hairy margins ; veins 

 on the under surface, muricate. Flowers in capitate clusters ; coninmn 

 peduncle muricate, hairy. Calyx villous. Corolla small, S-tocthed 

 Style slightly 2-cleft. Capsule 2-celled.— Blue. ©. Aug.— Sept 

 Middle Geo. 



