346 COXVOI.VILACK.K. (CONVOKVL'LUS TAMILV.) 



8. STYLISMA, Kaf. 



Sepals 5. Corolla 1k11-s1i:1|i('(1, hairv. Staincns included. Styles 2, distinct 

 or united below, entire : siii^nms peltate. Ovary 2-cclled, 4-ovuled. Capsule 

 1 -4-seeded. — Perennial prostrate pubeseent Iierlis, witb entire leaves, and small 

 flowers on axillary peduneles which are longer than the leaves. 



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

 cordate, obtuse or eniarginatc at the apex, mueronate ; peduncles (ilii'orin, 1-7- 

 flowered ; 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-flowercd peduncles, and more pubescent sepals. (Convolvulus hu- 

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

 Carolina, and westward. July -Sept. — Stems 2° -3° long. Leaves I'-.T 

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

 tuft of hairs when young. 



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

 long, obtuse, mueronate, 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 ^'-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-flowered; bracts linear, 

 as long as the flower ; sepals ovate-lanceolate, veiy 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 b" 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 pubescent 

 creeping herbs, with broadly cordate petioled leaves, and solitary bractless flow- 

 ers on axillary peduncles. 



1. D. repens, Forst., var. Cai'Olinensis, Chois. — Low grounds, Florida 

 to North Carolina, and westward. March -Oct. U — Stems filiform, 6'- 12' 

 long. Leaves ^'-H' in diameter, on petioles 1'- 4' long. Peduncles shorter 

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



10. CUSCUTA, Tourn. Dodder. 



Calyx 4 - 5-cleft, or 4 - 5-sepalous. Corolla globular-um-shaped, bell-shaped, 

 or somewhat tubular, 4 - 5-clcft. Stamens 4-5, with fimbriate mostly confluent 

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



