.'312 CONVOLVrLACK^-. (cONVOLVn.rS FAMILY.) 



3. PHARBITIS, Cliois. MoRMNcj-GLoiiy. 



Sopnls 5. Corolla iR'Il-shaiR'd or funiKl->liaiK'il, rj-plaitt'd. Stamens dilated 

 at till.' ha^o, iiuliuh'd. Slylu simple: stif^mia gloi)ose. Capsule 3 -4-tclled, 3 - 

 4-valved, 6 -8-seeded. — Twining herbs, with petiokd eordatc entire or lol)cd 

 leaves, and sinj^le or cj'iiiose blue or purple Howers, on axillary braeted pe- 

 duncles. 



1. P. hiS'Dida, Chois. Annual; stem f,'l:indular-rouf;;licned and hairy; 

 leaves entire, rouiul-cordate, acuminate ; peduncles mostly lon;,a>r than the leaves, 

 3-5-flowcred ; sepals ovatc-lanecolate, acute, mostly hairy ; corolla showy, blue, 

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

 troduced. June - Sept. 



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

 3-lol)ed, the lobes acuminate; jjeduncle.s shorter than the leaves, 2 -3-flowercd; 

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

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

 July - Sept. — Corolla U' long, 



4. IPOMCEA, L. Morxing-Glory. 

 Sepals 5. Corolla bell-sliaped 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-eclled, 2 - 4-valved, 4-secdcd, 

 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. (1) — Stem 1° -4° long. Corolla h' long. 



* * Mowers solitary, or frir in a)i open cyme. 

 ^- Corolla hell-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 

 I -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. U — Leaves 2' long. Co- 

 rolla 2' long, purple. 



1- -I- Corolla (mostly small) bell-shaped: capsnle hairy: seeds smooth or nearly so: 

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

 included. 



3. I. eommutata, R. & S. Stem pubescent or hairy ; leaves thin, cor- 

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



