CONV0LVULA.CEJS. (CONVOI. vrr.i s FAMILY.) 345 



on the back; sepals acute; corolla white ortfoae-color. (Convolvulus Bepiam, 

 L.) — Varies with the stem and shorter peduncles pubescent; leaves smaller 

 and narrower. (C. Catesbeiana, PA.?) — Rich soil, Florida (the var.), and 

 northward. Aug. and Sept. \ — Leaves 2' -4' long. Corolla l^'-2' long. 

 Stigmas oblong-Ovate. Stamens dilated and flattened below. 



2. C. spithamaea, Pursh. Pubescent ; stem erect, rarely twining at the 

 summit : leaves ovate or oblong-ovate, cordate, the upper ones acute ; peduncles 

 longer than the leaves, terete ; bracts ovate-lanceolate ; corolla white. — Dry- 

 soil, Florida, and northward. May -Sept. y. — Stem l°-2° high. Leaves 

 1 ' - 2' long. Corolla 1 £' - 2' long. 



3. C. paradoxa, Pursh. Stem prostrate, tomentose ; leaves oblong, 

 cordate-sagittate, acute; peduncles longer than the leaf; bracts remote from 

 the flower, linear ; sepals naked, smooth, acuminate ; corolla large, white. — 

 In Carolina or Virginia, Pursh. ( * ) 



7. EVOLVULTJS, L. 



Sepals 5. Corolla bell-shaped or somewhat wheel-shaped, mostly hairy. 

 Stamens included. Styles 2, distinct, 2-cleft or 2-parted : stigma obtuse. 

 Capsule 2-celled, 4-seeded. — Small perennial herbs, with chiefly silky or hairy 

 prostrate stems, entire leaves, and small flowers ou axillary peduncles. Cap- 

 sules nodding. 



* Common peduncle very short or none; the pedicels shorter than the leaves. 



1. E. sericeus, Swartz. Silky with appressed hairs throughout, except 

 the upper surface of the leaves ; stem dividing at the base into numerous pros- 

 trate or ascending simple filiform branches ; leaves sessile, linear or linear-lan- 

 ceolate, acute at each end, erect ; peduncle almost wanting, 1-flowered, rarely 

 2" -3" long and 2-3-flowered; sepals ovate-lanceolate, acuminate, ^ as long as 

 the white wheel-shaped corolla. — Varies with shorter (4' - 6' long) and more rigid 

 stems, and oblong or elliptical and obtuse leaves. — Damp soil, Florida, Georgia, 

 and westward. June-Oct. — Stems 6'-12' long. Leaves 6" -9" long. Co- 

 rolla 4" - 5" in diameter. 



* * Peduncles longer than the leaves. 



2. E. glabriusculus, Chois. Stem creeping, simple, sprinkled with ap- 

 pressed hairs ; leaves rigid, clliptical-obovate, mueronate, nearly sessile, smooth 

 above, pubescent on the veins beneath ; peduncles bristle-like, rather longer than 

 the leaves, 1 - 3-flowered ; sepals ovate-lanceolate, acute, hairy, as long as the 

 pedicel; corolla very small. — South Florida. — Stem 1° long. Leaves 4" -6" 

 long. Corolla 2" wide. 



3. E. diffusus, n. sp. Silky with long spreading hairs ; stems very nu- 

 merous, filiform, diffuse ; leaves obovate or oblong, mueronate, short-petiolcd ; 

 peduncles bristle-like, often by pairs, 3-4 times as long as the leaves, 1-3- 

 flowered ; sepals ovate-lanceolate, acuminate, shorter than the pedicels ; corolla 

 wheel-shaped , styles parted nearly to the base. — South Florida. — Stems 1°- 

 2° long. Leaves 4'' -6'-' long. Corolla 2" wide. 



