342 CONVOLVULACE^J. (CONVOLVULUS FAMILY.) 



3. PHARBITIS, Chois. MORNING-GLORY. 



Sepals 5. Corolla bell-shaped or funnel-shaped, 5-plaited. Stamens dilated 

 at the base, included. Style simple : stigma globose. Capsule 3 -4-celled, 3 - 

 4-valved, 6 - 8-seeded. Twining herbs, with petioled cordate entire or lobed 

 leaves, and single or cymose blue or purple flowers, on axillary bracted pe- 

 duncles. 



1 . P. hispida, Chois. Annual ; stem glandular-roughened and hairy ; 

 leaves entire, round-cordate, acuminate ; peduncles mostly longer than the leaves, 

 3 - 5-flowered ; sepals ovate-lanceolate, acute, mostly hairy ; corolla showy, blue, 

 purple, or variegated. (Convolvulus purpureus, L.) Around dwellings. In- 

 troduced. June - Sept. 



2. P. Nil, Chois. Annual, hairy ; leaves membranaceous, broadly cordate, 

 3-lobed, the lobes acuminate ; peduncles shorter than the leaves, 2 - 3-flowered ; 

 sepals densely hispid, ending in a long subulate point ; bracts linear ; corolla 

 purple. (Convolvulus Nil, L.) ~ Cultivated ground, Florida, and northward. 

 July- Sept. Corolla l' long, 



4. IPOMCEA, L. MORNING-GLORY. 



Sepals 5. Corolla bell-shaped or funnel-shaped, 5-plaited. Stamens dilated 

 at the base, included (except No. 8). Ovary 2-celled, rarely imperfectly 4-celled. 

 Style simple : stigma capitate, 2-lobed. Capsule 2-celled, 2 -4-valved, 4-seeded, 

 or, by abortion, 1 - 3-seeded. Seeds smooth or hairy. Twining or trailing 

 rarely erect herbs, with cordate or sagittate entire or variously lobed leaves, and 

 showy white or purple flowers on axillary peduncles. 



* Flowers crowded in a leafy-bracted capitate cyme : corolla small, bell-shaped. 



1. I. tamnifolia, L. Hairy ; stem erect or twining ; leaves cordate-ovate, 

 acuminate, somewhat plicate with impressed parallel veins ; peduncles longer than 

 the petioles ; lower bracts longer than the many-flowered heads ; sepals subulate, 

 bristly, nearly as long as the blue corolla ; stigmas distinct ; capsule depressed, 

 somewhat 4-sided. Cultivated ground, Florida to South Carolina, and west- 

 ward. July - Oct. (3) Stem 1 -4 long. Corolla ' long. 



* * Flowers solitary, or few in an open cyme. 

 M- Corolla bell-shaped : leaves orbicular : stems prostrate. 



2. I. Pes-Caprse, Sweet. Smooth and fleshy ; stem prostrate ; leaves 

 petioled, orbicular, or slightly notched at the apex, parallel-veined ; peduncles 

 1 - 3-flowered, the ovate bracts minute ; sepals oval or oblong, obtuse, mucro- 

 nate; tube of the corolla very short. (I. orbicularis, Ell.) Drifting sands 

 along the coast, Florida and Georgia. Aug. - Oct. 1J. Leaves 2' long. Co- 

 rolla 2' long, purple. 



^_ -H. Corolla (mostly small) bell-shaped: capsule hairy: seeds smooth or nearly so: 

 stems slender, twining: leaves petioled, cordate, entire or 3-lobed: stamens 

 included. 



3. 1. commutata, R. & S. Stem pubescent or hairy ; leaves thin, cor- 

 date, acuminate, entire, angled or 3-lobed, the lateral lobes acute or sometimes 



