CONVOLVULACEAE. 121 



Sepals equal, about 6 mm. long : corolla-limb less than 3 



cm. wide. 3. 1. tenuissima. 



Sepals unequal, 7-9 mm. long : corolla-limb over 5 cm. wide. 4. /. sagittate. 

 Leaf-blades ovate, entire or angulately lobed, or hastately 

 3-lobed. 



Calyx glabrous ; lobes 10-14 mm. long : plants perennial. 5. /. Batatas. 



Calyx pubescent ; lobes 8-10 mm. long : plants annual. 6. /. triloba. 



1. I. stolonifera (Cyrill.) Poir. Leaf -blades 2-5 cm. long, the early ones 

 ovate to oblong, the later ones pandurate or more deeply lobed, mostly trun- 

 cate or cordate at the base: sepals oblong to oval, 1-1.5 cm. long, mucronate 

 or acuminate: capsules subglobose, 1.5 cm. long. — Coastal sand-dunes and 

 beaches, U. S. keys. — {Bah., Cuba, Ant.) 



2. I. Pes-Caprae (L.) Sweet. Leaf-blades 6-10 cm. long and as broad, rounded 

 or cordate at the base: sepals oval or suborbicular, obtuse: corolla 4-5 cm. 

 long: capsules globose-ovoid, 1.5 cm. long. — Coastal sand-dunes and shores, 

 U. S. keys, U. keys, L. keys, L. S. keys. — [E. K.] — {Ber., Bah., Cuba, Ant.) — 

 Beach morning-glory. 



3. I. tenuissima Choisy. Stems twining: leaf- blades lanceolate or linear- 

 lanceolate, 2-5 cm. long, obtuse and mucronulate: sepals ovate-lanceolate, 

 obtuse, ciliate: corolla purple, 3-4 cm. long: capsules globose. — Open sandy 

 hammocks, U. keys. — [E. K.] — {Cuba.) 



4. I. sagittata Cav. Stems twining: leaf -blades 3-10 cm, long, sagittate or 

 hastate-sagittate, the segments linear or lanceolate, the basal ones about half 

 as long as the terminal one: sepals 6-9 mm. long: corolla 5-6 cm. long. — 

 Pinelands and hammocks, L. keys. — [E. K.] — {Ber., Bah., Cuba.) 



^^/ 5. I. Batatas (L.) Lam. Stems from tuberous edible roots, the branches trail- 

 ing: leaf -blades ovate, 5-11 cm. long, entire or angulately lobed, cordate: 

 sepals unequal, ovate-lanceolate or lanceolate, acuminate: corolla 3-5 cm. long, 

 white varying to shades of pink or purple. — Pinelands, hammocks and waste 

 places, U. keys, L. keys. Nat. of the E. Indies.— [E. K.] — {Ber., Bah., Cuba, 

 Ant.) — Sweet-potato. 



'^'^Q. I. triloba L. Stems twining: leaf -blades ovate, 4-10 cm. long, entire or 

 hastately 3-lobed, glabrate : sepals pubescent, oblong or suborbicular, 8-10 mm. 

 long, acute or acuminate: corolla purple, 1.5 cm. long: capsules subglobose, 6-8 

 mm. in diameter, often pubescent: seeds glabrous.- — Hammocks and sandy 

 shores, L. keys. — {Bah., Cuba, Ant.) 



4. CALONYCTION Choisy. High-twining vines. Leaf-blades broad. 

 Flowers showy. Calyx-lobes herbaceous, becoming leathery, the outer ones 

 sometimes horned at the apex. Corolla white, expanding in the evening, salver- 

 form: tube elongate, not dilated at the throat. Capsules large, longer than 

 broad. — Moon-flower. 



Outer sepals horned : leaf-blades thin-textured. 1- G- aculeatum. 



Outer sepals obtuse : leaf-blades thick-textured. 2. C. tuba. 



1. C. aculeatum (L.) House. Leaf-blades ovate, 5-15 cm. long, entire or has- 

 tately 3-5-lobed: calyx-lobes about 1 cm. long: corolla-tube slender, 10-12 cm. 

 long; limb 10-13 cm. wide.— Hammocks, U. keys, L. keys.— [E. K.]—{Bah., 

 Cuba, Ant.) 



^ - 2. C, tuba (Schlecht.) Colla. Leaf-blades ovate, acute, entire, cordate, 10-15 

 cm. long: calyx-lobes unequal, greenish, 2-2.5 cm. long: corolla-tube 10-14 cm. 

 long; limb 8-10 cm. wide.^Coastal hammocks, U. keys, L. keys, L. S. keys. — 

 [E. K.]—{Ber., Bah., Cuha, Ant.) 



5. JACQUEMONTIA Choisy. Trailing or twining vines or upright shrubs 

 or herbs. Leaf -blades entire or rarely toothed or lobed. Flowers in loose 



