CON VOM CLACE.E. (CONVOLVULUS FAMILF.) 333 



axillary 1 -dowered peduncles. (Name from KaXu, calyx, and orryw, to cover, 

 alluding to the bracts enclosing the calyx.) 



1. C. septum, R. Br. (HEDGE BINDWEED.) Smooth; stem twining; 

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

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

 rolla white, or rose-color (l'-2' long). (Convolvulus septum, L.) Var. 

 REPENS (Convolvulus repciis, L.) is more or less prostrate, the flowers tinged 

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

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



2. C. SjMtlmi2i;f>l, 1'ursh. (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 orOXos, style, and 'iar pa, foundation ; per- 

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



1. S. evolvtiloides, 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., frc.) Sandy woods, Ohio, Ridddl (?), 

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



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

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

 sembling the leaves, equalling the Jlower ; styles united to far above the middle. 1J. 

 (Convolvulus Pickcringii, Torr.} Sandy pine barrens, New Jersey (and N. 

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



6. DICIIONDRA, Forst. DICHONDRA. 



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

 Styles, ovaries, and the utricular 1 - 2-seedcd 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 %6vdpos, grain, or roundish mass; from the 

 fruit.) 



1. D. re pens, Forst.: var. Caroliiicnsis, Choisy. Leaves round- 

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

 (1" - 1 j" long). (D. Carolinensis, MicJif.) Moist ground, Virginia, near Nor- 

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



