CONVOLVULACE^E. (CONVOLVULUS FAMILY - .) 335 



axillary 1-flowered peduncles. (Name from *cdXv|, calyx, and oreyo), to cover, 

 alluding to the bracts enclosing the calyx.) 



1. C. sepillin, R. Br. (Hedge Bindweed.) Smooth; stem twining; 

 leaves broadly arrow-shaped or triangular-halberd-form, pointed, the lobes at the 

 base obliquely truncate and often somewhat toothed ; peduncles 4-angled ; co- 

 rolla white, or rose-color (U'-2' long). (Convolvulus sepium, L.) — Var. 

 eepens (Convolvulus repens, L.) is more or less prostrate, the flowers tinged 

 with pink ; a form growing on gravelly shores. — Moist grounds ; common. 

 June, July. Vav. pubiescens. Illinois and westward. (Eu.) 



2. C. spitham&a, Pursh. (Low Bindweed.) Downy; stem low and 

 mostly simple, upright or ascending (6'- 12' long) ; leaves oblong, with a more or 

 less heart-shaped or auricled base, obtuse or pointed at the apex; peduncles 

 usually longer than the leaf; corolla white (2' long). Open sandy woods and 

 plains, Maine to Wisconsin and southward. July. 



5. STYLISMA, Raf. Sttlisma. 



Styles 2 (rarely 3), distinct and simple, or united to above the middle: stig- 

 mas (small) depressed-capitate. Otherwise as in Convolvulus and Evolvulus. 

 — Stems slender, branched, prostrate or spreading. Corolla white, somewhat 

 downy outside. (Name compounded of o~tv\os, style, and 'icrfia, foundation ; per- 

 haps because the style is divided to the base in the original species.) 



1. S. cvolvtlloides, Choisy. Soft-pubescent; leaves linear, lanceolate, 

 or oblong, obtuse at both ends or obscurely heart-shaped at the base (f'-lA' 

 long), short-petioled ; peduncles 1 - 5-flowered ; bracts awl-shaped, shorter than the 

 pedicels; styles distinct or nearly so. 1J. (Convolvulus aquaticus, Walt. C. tri- 

 chosanthes, Michx. C. tcnellus, Lam., frc.) — Sandy woods, Ohio, Riddell (?), 

 Virginia, and southward. June - Sept. — Corolla 5" - 8" long. 



2. §. Pickei'illgii. Soft and loosely pubescent ; leaves narrowly linear, 

 narrowed at the base, scarcely petioled; peduncles mostly 1 -flowered ; bracts re- 

 sembling the leaves, equalling the flower ; styles united to far above the middle, y. 

 (Convolvulus Pickeringii, Ton:) — Sandy pine barrens, New Jersey (and N. 

 Carolina). July - Sept. — Stems prostrate, 2° - 3° long. Corolla 3" - 5" long. 



6. DICHOIVDRA, Forst. Dichondra. 



Calyx 5-^arted. Corolla broadly bell-shaped, 5-cleft. Stamens included. 

 Styles, ovaries, and the utricular 1 - 2-seeded pods 2, distinct. Stigmas thick. — 

 Small creeping perennial herbs, soft-pubescent, with kidney-shaped entire leaves, 

 and axillary 1 -flowered bractless peduncles. Corolla small, yellowish or white. 

 (Name composed of St's, double, and x°^P°s, grain, or roundish mass ; from the 

 fruit.) 



1. I>. repens, Forst. : var. Caroline nsis, Choisy. Leaves round- 

 kidney-shaped, pubescent, green both sides; corolla not exceeding the calyx 

 (1"-1^" long). (D. Carolinensis, Me/a-.)— Moist ground, Virginia, near Nor- 

 folk, and southward. (Widely diffused in the Southern hemisphere. ) 



