Convolvulus. CONYOLVULACE^. 215 



tition : perennials, with filiform creeping rootstocks. — Calystegta, R. Br., Hook. 

 & Benth., &c. 



Calystegia paradoxa, Pursh, Fl. ii. 729, which was described from Sherard's herbarium, 

 and supposed to come from Virginia or Carolina, is not recognizable, and is certainly no true 

 Calystegia. 



C. Soldanella, L. Glabrous, fleshy : stems low and mostly short, creeping or trailing : 

 leaves reniform, entire or obscurely angulate, often emarginate, an inch or two wide, long- 

 petioled : bracts roundish and obscurely cordate, not longer than the se.pals : corolla pink- 

 purple, 12 to 18 lines long, short-f unnelform : stigmas ovate. — Spec. i. 159 ; Engl. Bot. 

 t. 314 ; Gray, Bot. Calif, i. 533. Calystegia Soldanella & C. reniformis, R. Br. Prodr. 433. — 

 Sands of the Pacific coast, Puget Sound to California. (Most Pacific shores, Eu., &c.) 



C. spithameeus, L. Soft-pubescent or tomentose: stem erect or ascending, or sometimes 

 decumbent, a span to 2 feet long, mostly simple and not twining : leaves short-petioled, 

 oblong, with rounded or subcordate or sometimes short-sagittate base : bracts ovate, not 

 auricled at base : corolla white, campanulate-f unnelform, 1| to 2 inches long : stigmas oval. 

 — Spec. i. 158 ; Ell. Sk. i. 251. C. stans, Michx. Fl. i. 136. Calystegia spithamcea & C. tomen- 

 tosa, Pursh, Fl. 1. 434. C. spithamcea, Hook. Exot. t. 97, but stigihas too narrow. — Dry and 

 sandy or rocky soil, Canada to Wisconsin and south to Florida. 



C. sepium, L. Glabrous, or more or less pubescent, freely twining : leaves slender-petioled, 

 deltoid-hastate and triangular-sagittate (2 to 6 inches long), acute or acuminate; the basal 

 lobes or auricles either entire or angulate-2-3-lobed : peduncles mostly elongated : bracts 

 cordate-ovate or somewhat sagittate, commonly acute : corolla broadly f unnelform, 2 inches 

 long, white or tinged with rose-color : stigmas from oval to oblong. — Curt. Fl. Lond. 

 t. 32 ; Engl. Bot. t. 318 ; Fl. Dan. t. 458. Calystegia sepium, R. Br. Prodr. 483 ; Reichenb. 

 Ic. Germ, xviii. t. 1340. — Moist alluvial soil, or along streams, Canada and N. Atlantic 

 States to Utah. (Eu., &c.) 



Var. Americanus, Sims. Corolla pink or rose-purple: bracts obtuse. -:- Bot. 

 Mag. t. 732. C. sepium of Am. authors in large part. Calystegia sepium, var. rosea, Choisy 

 in DC. Prodr. ix. 433. — Canada to Carolina and Oregon. (N. Asia.) 



Var. repens. Corolla from almost white to rose-color : bracts from very obtuse to 

 acute: herbage from minutely to tomentose-pubescent : sterile and sometimes flowering 

 stems extensively prostrate : leaves more narrowly sagittate or cordate, the basal lobes 

 commonly obtuse or rounded and entire. — Convolvulus repens, L. Spec. i. 158 (as to pi. 

 Gronov., excl. syn. Plum. & Rheede) ; Michx. 1. c. Calystegia sepium, var. pubescens, Gray, 

 Man. ed. 5, 376. C. Catesheiana, Pursh, Fl. ii. 729 ; Choisy, 1. c. —Canada ? to Texas, and 

 west to Dakota and New Mexico, on banks and shores. Sometimes with almost glabrous 

 and thickish leaves ; Calystegia sepium, var. maritima, Choisy, in part. (The species widely 

 diffused over the world and variable.) 



§ 2. Stigmas linear or oblong-linear, flat : bracts at the base of the calyx as in 

 the preceding section or smaller, or various at the base of a short pedicel. Cali- 

 fornian species. 



C OCcidentalis, G-ray. Glabrous or minutely pubescent : stems freely twining : leaves 

 slender-petioled, from angulate-cordate with a deep and narrow sinus to sagittate or tlie 

 upper hastate ; the posterior lobes often 1-2-toothed : peduncles elongated, surpassing the 

 leaf, sometimes proliferously 1-3-flowered : bracts at base of calyx ovate or obscurely cor- 

 date, membranaceous, equalling it or rather longer, mostly obtuse : corolla campanulate- 

 f unnelform, white or pinkish, 12 to 18 Hnes long: stigmas linear.— Proc. Am. Acad, xi.89, 

 & Bot. Calif, i. 533. — Dry hills, W. California, from San Francisco Bay to San Diego. 



Var. tenuissimus, Gray, 1. c, a form with narrowly hastate or sagittate leaves 

 (only an inch or two long), the middle and mostly the basal lobes narrowly lanceolate : 

 bracts ovate-oblong or ovate-lanceolate, acute or acuminate. — Santa Barbara and San 

 Diego, Nuttall, Cooper, &c. 



C. Californicus, Choisy. Minutely and often densely pubescent : stems very short 

 and erect from filiform rootstocks, flowering close to the ground, or at length witli prostrate 

 branches a span or even a foot long : leaves slender-petioled, from ovate or round-obovate 

 to deltoid or subcordate and obtuse, or the later somewhat sagittate or hastate and acute 



