330 CONVOLVULACEJE. (CONVOLVULUS FAMILY.) 



August -Sept. ")l Leaves 2' -4' long. Corolla 1^'- 2' long. Stigmas 

 oblong-ovate. Stamens dilated and flattened below. 



5. C. spithamseus, L. Pubescent; stem erect, rarely twiuiug at the 

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

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

 Florida, and northward. May -Sept. % Stem 1- 2 high. Leaves I' -2' 

 long. Corolla 1 % - 2' long. 



4. EVOLVULUS, 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 on axillary peduncles. Cap- 

 sules nodding. 



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



1- E. sericeus, Swartz. Stem dividing at the base into numerous pros- 

 trate or ascending simple filiform branches ; leaves sessile, linear to oblong, 

 acute at each end ; peduncle 1 - 3-flowered ; sepals ovate-lanceolate, acuminate, 

 half as long as the white wheel-shaped corolla. Damp soil, Florida, Georgia, 

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

 rolla 4" -5" in diameter. 



2. E. argenteus, Pursh. Silky-villous throughout ; stem rigid (6' high), 

 very leafy ; leaves linear-lanceolate or spatulate ; sepals lance-subulate ; 

 corolla blue or purple. Pine Key, South Florida (Blodgett, ex Gray), 

 Tennessee, and westward. 



* * Peduncles longer than the leaves. 



3. E. mucronatUS, Swartz. Stem creeping, simple, sprinkled with ap- 

 pressed hairs ; leaves rigid, elliptical-obovate, mucronate, 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. 



4. E. alsinoides, L. Silky with long spreading hairs ; stems very nu- 

 merous, filiform, diffuse ; leaves obovate or oblong, mucronate, short-petioled ; 

 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. 



5. BREWERIA, R Br. (STTLISMA, 1st edit.) 



Sepals 5. Corolla bell-shaped, hairy. Stamens included. Styles 2, distinct 

 or united below, entire : stigmas peltate. Ovary 2-celled, 4-ovuled. Capsule 

 1- 4-seeded. Perennial prostrate pubescent herbs, with entire leaves, and 

 mostly small flowers on axillary peduncles which are longer than the leaves. 



1. B. humistrata, Gray. Hairy; leaves oblong, slightly cordate vary- 

 ing to narrow-linear ; peduncles filiform, 1 - 7 flowered ; sepals o --'to. n-'iite; 



