308 CONVOLVULUS FAMILY. 



long ; pod with 4 one-seeded cells. Origin unknown, but likely derived 

 from some Tropical American species. Flowers seldom appear. 21 (Les- 

 sons, Fig. 86.) 



*+ ++ Stems twining or with a distinct twining tendency. 



= Corolla with a large spreading limb. 



|| Flower, or at least the greater part of it, white. 



I. Iacun6sa, Linn. Low grounds, Perm, to HI. and S.; twining, nearly 

 smooth, with heart-shaped, nearly entire leaves, short 1-3-flowered 

 peduncles, small white (sometimes purple-bordered) 5-lobed corolla 

 about .}' long and twice the length of the pointed ciliate sepals, and 

 slightly hairy pod. ® 



I. sinuata, Ort. Stem (somewhat woody at the base) and petioles 

 hairy, but the leaves nearly or wholly glabrous and 7-parted, the divi- 

 sions lanceolate or narrower and sinuately cut ; calyx as long as the tube 

 of the white purple-eyed corolla. Ga., S. % 



I. pandurata, Meyer. Wild Potato Vine or Man-of-the-eahth. 

 Sandy or_gravelly soil, Can., S., often a bad weed; trailing or twining, 

 stout, smooth, with heart-shaped and sometimes fiddle-shaped or halberd- 

 3-lobed leaves, 1-5-flowered peduncles, small bracts, and open funnel- 

 form white corolla with deep purple eye, 2'-3' long ; root very large and 

 deep, weighing 10-20 lbs. % 



II || Flower red, blue, or purple throughout (rarely white in the first). 



o Leaves broad and cordate, either lobed or entire. 



I. Jalapa, Pursh. Light soil, along the coast S. Car., S.; creeping or 

 twining, with heart-shaped or triangular, sometimes lobed leaves, downy 

 beneath ; flowers downy ; corolla purplish-white with purple eye, 3'-4' 

 long, opening at night; pod partly 4-celled, with silky seeds; root ex- 

 tremely large and fleshy, often weighing 40-50 lbs. 21 



I. commutata, Rcem. & Sch. Rather hairy, twining; with thin, 

 heart-shaped, and sometimes angled or 3-5-lobed leaves, 4-angled 1-5- 

 flowered peduncles about the length of the slender petioles ; purple corolla 

 l'-2' long, and 4-5 times the length of the pointed ciliate sepals; pod 

 hairy. S. Car., S. (J) 



/. Leari, Paxt. Cult, from S. Amer.; tender, slightly hairy, with heart- 

 shaped and generally 3-lobed leaves, many Morning-glory-like flowers 

 crowded on the summit of the peduncle, and deep violet-blue corolla 3' 

 long, and border 3' wide ; stigma capitate. 21 



I. rObro-ccerOlea, Hook. Smooth, greenhouse generally evergreen 

 climber, with long-petioled, pale green, deeply cordate, acuminate leaves 

 and 3-4-flowered peduncles; flowers large and handsome, rich blue, with 

 a 5-angled limb ; stigma 2-lobed. Mex. 21 



I. setdsa, Ker. Stems, petioles and co-flowered peduncles strongly 

 setose or hispid ; leaves deeply cordate and round-ovate, with 3 large lobes 

 and round sinuses ; flowers of medium size, red or purple-red, the tube 

 cylindrical ; stigma capitate. Greenhouses ; from Brazil. 21 



o o Leaves narrow and sagittate. 



I. sagittata, Cav. Salt marshes, from N. Car., S.; smooth, with stems 

 twining 2°-3° high, or trailing, narrow lanceolate or linear long-sagittate 

 leaves, 1-3-flowered club-shaped peduncles, and the bright purple funnel- 

 form corolla 2'-3' long. 21 



= = Corolla with a swollen tube, but no spreading limb. 

 I. versicolor, Meissn. (MIna lobata). House plant from Mexico, with 

 broad and cordate 3-lobed leaves, and scirpoid racemes of small flowers, 

 which are reddish at first, but soon change to orange and yellow ; stigma 

 capitate. (J) 



