CONVOLVULACKJE. (CONVOLVULUS FAMILT.) 335 



axillary 1 -flowered peduncles. (Name from dXv, calyx, and oreyw, to cover, 

 alluding to the bracts enclosing the calyx.) 



1. C. sepium, 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 (l'-2' long). (Convolvulus sepium, L.) Var. 

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

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

 June, July. (Eu.) 



2. C. spitliam&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. STYL.ISMA, Raf. STTLISMA. 



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

 mas (small) depi-essed-capitate. Otherwise as in Convolvulus and E volvulus. 

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

 downy outside. (Name compounded of oruXos, style, and i<r/za, foundation ; per- 

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



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

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

 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. tenellus, Lam., Sfc.} Sandy woods, Ohio, Riddett (?), 

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



2. S. Pickeringii. Soft and loosely pubescent ; leaves narrowly linear, 

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

 tumbling the leaves, equalling the flower ; styles united to Jar above the middle. 1J. 

 (Convolvulus Pickeringii, Torr.) Sandy pine barrens, New Jersey (and N. 

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



6. DIC HO IV DRY, Forst. DICHONDRA. 



Calyx 5-parted. 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 Si's, double, and ^oi/5por , grain, or roundish mass ; from the 

 fruit.) 



i. I>. repens, Forst. : var. CaroliliensiS, Choisy. Leaves round- 

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

 (1" - l" long). (D. Carolinensis, Michx.) Moist ground, Virginia, near Nor- 

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



