Order 93.— BINDWEEDS. 281 



1. QTJAM'OCLIT. Cypress Vine. 



1 Q. vulga''ris. True G. Leaves pectinate-pinnatifid. Fls. scarlet, crimson, &c. S. 



2 Q. coccinea. Entive-lv. G. Lvs. undivided, cordate, acuminate. Crimson. W.S. 



2. BATATAS. Sweet Potato. 



1 B. littora'lis. Sea-side B. Peduncle 1-flowered, as long as the sinuate, cordate 



leaf. S. 

 B, macrorhi''za. Wild, Potato. Peduncle 1-5-fowered, shorter tlian the lobcd or 



entire leaf, which is downy beneath. Flowers purplish-white. S. 

 B. ed'ulis. Sweet Potato, Peduncle 3-5-flowered, shorter than the palmate or 



pedate-lobed leaf. Flowers showy, rose-purple, f 



3. PHAR'BITIS. Morning-glory. (Fig. 22.) 



1 P. purpu''rea. Gammon M. Leaves entire, cordate. Peduncle 2-5-flowered. f 



2 P. Nil. Indigo M. Lvs. 3-lobed, cordate. Ped. 1-3-flwd. Sepals long. M. S. t 



4. IPOM^'A. False Bindweed. 



A large genus. Some of its tropical species are shrubs and tre(>« ; and 

 are all trailing or climbing herbs, chiefly at the South. We men.^on but 

 one species. 



*. pan''durata. Wild Potato. Leaves broadly cordate, often fiddle-shaped (pandnri- 

 form). Corolla large (near Z' long), 4 times longer than the calyx, white, with 

 a purple centre. Eoot very large. Sandy fields. West and South. 



5. CONYOL'VULUS. Bindweed. 



1 C. arven'sis. Field B. Leaves sagittate. Fls. white, with a tinge of red, small. 



2 O. tri'color. Tri-colored B. Leaves lance-obovate. Fls. yellow, white, blue, t 



6. CALYSTE'GIA. Bracted Bindweed. 



1 C. spithamaB''us. Erect B. Stem ascending, 8-10\a span). Leaves lance-oblong 



Peduncle as long as the leaves, bearing 1 large, white flower. Fields. 



2 C. Sepium. Butland Beautjj. Stem twining, long. Leaves cordate-sagittato. 



Flowers numerous, large, white, sometimes double in cultivation. 

 ij C Catesbeia'nus. Catesby'aB. Plant downy, twining. Flowers purple. 8. 



