CONVOLVULACEJE. (CONVOLVULUS FAMILT.) 335 



axillary 1-flowered peduncles. (Name from *coAv, calyx, and crreyo), to cover, 

 alluding to the bracts enclosing the calyx.) 



1. C. se pill III, 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. 

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

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

 June, July. Var. pubi&scens. Illinois and westward. (Eu.) 



2. C. spithanicea, 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-ISIWA, 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 orvXos, style, and *cr pa, foundation ; per- 

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



1. S. evolvtlloides, 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. 1|. (Convolvulus aquaticus, Walt. C. tri- 

 chosanthes, Michx. C. tenellus, Lam., frc.) Sandy woods, Ohio, Riddell (1), 

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



2. S. Pickering!!. 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. JJ. 

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

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



6. DICHONDRA, Forst. DICHOXDRA. 



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 Si's, double, and xovdpos, grain, or roundish mass ; from the 

 frnit.) 



1. D. repens, Forst. : var. CarolinensiS, Choisy. Leaves round- 

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

 (1" - \y long). (D. Carolinensis, Mchx.) Moist ground, Virginia, near Nor- 

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



