34G COXVOLVULACE-E. (CONVOLVULUS FAMILY.) 



8. STYLISMA, Raf. 



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 Bmall 

 flowers on axillary peduncles which are longer than the leaves. 



1. S. humistrata. Hairy and roughish ; leaves pctioled, oblong, slightly 

 cordate, obtuse or emarginate at the apex, mucronate j peduncles filiform, 1-7- 

 flowcrcd ; sepals ovate, acute, smooth, fringed on the margins ; capsule smooth, 

 nodding; bracts minute ; corolla white ; filaments hairy; styles united below. — 

 Varies with linear or lanceolate, often acute, nearly sessile leaves, shorter and 

 uniformly 1-flowered peduncles, and more pubescent sepals. (Convolvulus hu- 

 mistratus, Walt. C. tenellus, Ell.) — Dry sandy pine barrens, Florida to South 

 Carolina, and westward. July - Sept. — Stems 2° -3° long. Leaves l'-3' 

 long. Corolla 10" long. Capsule ovate, commonly 1-seeded, crowned with a 

 tuft of hairs when young. 



2. S. aquatica. Silky-pubescent and somewhat hoary ; leaves linear-ob- 

 long, obtuse, mucronate, truncate or slightly cordate at the base, short-petioled ; 

 peduncles 1-7 (mostly 3-)-flowered ; sepals ovate-lanceolate, acuminate, very 

 silky; capsule erect, pubescent; bracts subulate, as long as the pedicels ; corolla 

 purple ; filaments smooth; styles distinct. (Convolvulus aquaticus, Walt.) — 

 Margins of ponds, Florida to North Carolina, and westward. July -Sept. — 

 Stems 2° -3° long. Leaves J'-l' long. Corolla 5" long. 



3. S. Pickeringii, Gray. Soft-pubescent or villous ; leaves linear, ob- 

 tuse, narrowed at the nearly sessile base; peduncles 1 -3-fiowercd ; bracts linear, 

 as long as the flower; sepals ovate-lanceolate, very hairy, longer than the pedi- 

 cel ; corolla small, white ; styles united nearly to the apex ; stamens slightly 

 exserted. — Sandy pine barrens, North Carolina, and northward. July -Sept. 

 — Stems 2° -3° long. Leaves 12"- 15" long. Corolla 5" long. 



9. DICHONDRA, Forst. 



Calyx 5-partcd, with the lobes obovate. Corolla somewhat wheel-shaped, 

 5-parted, shorter than the calyx. Stamens included. Ovaries 2, distinct, 

 2-OVuled. Styles 2 : stigmas capitate. Utricles 2, one-seeded. — Low pubescenl 

 creeping herbs, with broadly cordate pctioled Leaves, and solitary bractlesa flow- 

 ers on axillary peduncles. 



1. D. repens, Foist., var. Carolinensis, Chois. — Low grounds, Florida 



to North Carolina, and westward. March -Oct. \[— Steins lilit'orm, 6' - 12' 



long. Leaves A'-i^' in diameter, <>n petioles l'-4'long. Peduncles shorter 

 than the petioles. Calyx silky. Corolla minute, greenish white. 



10. CUSCUTA, Toiim. Doddbb. 

 Calyx 4 -5 deft, or J - 5-sepalous. Corolla globular-urn-shaped, bell-shaped, 



or somewhat tubular, i - ■< cleft. Bramens 4-5, with fimbriate mostly confluenl 



BCalea at the base, Ovary 2-celled, 4-OVuled. Styles 2: stigmas capitate (in 



