Convolculus. CONVOLVULACE^. 215 



tition : perennials, with filiform creeping rootstocks. — Calystegia, 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 



C(ilystei/la. 



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

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

 petioled : bracts roundish and obscurely cordate, not longer than the sepals : corolla pink- 

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

 t. 3U; Gray, Bot. Calif, i. 533. Calystegia Soldanella & C. reni/ormis, R. Br. Prodr. 433. — 

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



C. spithamseus, 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-funnelform, 1| to 2 inches long : stigmas oval. 

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

 tosa, Pursh, Fl. i. 434. C. spithaituea, Hook. Exot. t. 97, but stigmas 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-liastate and triangular-sagittate (2 to 5 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. 313 ; Fl. Dan. t. 458. Calystegia sepium, R. Br. Prodr. 483 ; Eeichenb. 

 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 witii 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, Gray. Glabrous or minutel}' pubescent : stems freely twining : leaves 

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

 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- 

 funnelform, white or pinkish, 12 to 18 lines 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 



