3o0 CONVOLVL'LACEiE. (cOX VULVULLS FAMILY.) 



August -Sept. 21 — Leaves 2'-4' l«>iig. Corolla IA'-2'loiig. Stigmas 

 olilong-ovate. Staiiicii.s dilated and Hatteiii'il beli^w. 



;■>. C. spithamaeus, L. Tuliesceiit; stem erect, rarely Iwiiiing at the 

 suuiinit ; k'a\ e.s ovale or oblung-ovate, cordate, tiie ujjper ones acute ; jicdundes 

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

 Florida, and northward. May-Sept. ^ — Stem l°-2° high. Leaves l'- 2' 

 long. Corolla 1 J' -2' long. 



4. EVOLVULUS, L. 



Sepals 5. Corolla hell-shaped or somewiiat wheel-shaped, mostly hairy. 

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

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

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

 sules Dodding. 



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



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

 trate or a.-iceiiding simple filiform branches; leaves sessile, linear to oblong, 

 acute at each end ; peduncle I -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 lauce-subulate ; 

 corolla blue or purple. — Pine Key, South Florida {Biodgett, ex Gray), 

 Tennessee, and westward. 



* * Peduncles longer than the leaves. 



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

 pressed hairs ; lea\es rigid, elliptical-obovate, mucronate, nearly sessile, smooth 

 above, pubescent on the veius 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" lonir. Corolla 2" wide. 



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

 merous, filiform, diffu.se ; lea>-es obovate or oblong, mucronate, short-petioled ; 

 peduncles bristle-like, often by pair.s, 3-4 times as long as the leaves, 1-3- 

 flowered; sepals ov.itelanceolate, 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 

 I -4-seeded. — I'erennial prostrate jjiihescent 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 ovate, acute; 



