216 CONVOLVULACE^. Convolvulus. 



(an inch or so long) : peduncles shorter than the petiole : bracts at base of calyx oblong, 

 obtuse, about equalling and somewhat resembling the outer very obtuse sepals : corolla 

 broadly funnelform, U to 2 inches long, white, cream-color, or tiesh-color : stigmas linear- 

 oblong. — DC. Prodr. ix. 405; Gray, 1. c. Calystegia subacaulis, Hook. & Arn. Bot. Beech. 

 303. — W. California, on hills, &c., from San Francisco Bay southward. 



C. Villosus, Gray, 1. c. Densely velvety-tomentose throughout, mostly silvery-wliite, 

 low : stems decumbent or prostrate, feebly if at all twining : leaves slender-petioled, from 

 reniform-hastate to sagittate, an inch or less long ; the basal lobes often angulate-toothed : 

 peduncles shorter than the leaf : bracts at base of and equalling the calyx, oval or ovate, 

 white-tomentose : corolla campanulate-funnelform, cream-color, an inch long : stigmas nar- 

 row-linear. — Cahjstecjin villosa, Kellogg in Proc. Calif. Acad. v. 17. — Dry and sandy soil, 

 California, Monterey Co., and Plumas Co. to Tejon. 



C. luteolus, Gray, 1. c. Glabrous or soft-pubescent : stems a span or two long and 

 ascending or more elongated and twining : leaves slender-petioled, from triangular- or del- 

 toid-hastate to sagittate, an inch or two long : peduncles equalling or surpassing the leaves : 

 bracts about their own length distant from the calyx, narrowly oblong varying to linear- 

 lanceolate, 2 to 4 lines long, much smaller than the chartaceo-coriaceous very obtuse 

 unequal sepals, a second flower rarely in the axil of one of them (occasionally the bracts 

 alternate) : corolla 12 to 18 lines long, campanulate-funnelform, pale yellow (sometimes 

 purplish or fading to purple ? ) : stigmas linear. — Ipomcea sagittifuUa, Hook. & Arn. Bot. 

 Beech. 151 (as to Calif, plant) ; Torr. in Pacif. R. Rep. iv. 127, the stigmas certainly linear ! 

 Convolvdas Californicus, Benth. PI. Hartw. 326, not Choisy. — California, from around San 

 Francisco Bay northward, and in the foothills of the Sierra Nevada. 



Var. f ulcratus. Gray, 1. c. Soft-pubescent : bracts foliaceous, hastate or sagittate, 

 and short-petiolcd, resembling diminutive leaves, 3 to 6 lines long, about their length dis- 

 tant from the calyx or sometimes closely subtending it. — Convolvulus arvensis, var. villosus, 

 Torr. 1. c. — Foothills of the Sierra Nevada from the Stanislaus southward. 



§ 3. Stigmas filiform or narrowly linear : no bracts at or near the base of the 

 calyx. 



* Procumbent or low-twining perennials: bracts of the 1— 3-flowered peduncle small or minute and 

 subulate: corolla an inch or less long, broadly short-funnelform. 



•)— Introduced species, nearly glabrous : leaves broad and entire. 

 C. ARVExsis, L. Mostly procumbent : leaves oblong-sagittate or somewhat hastate, an inch 

 or two long ; the basal lobes short and acute : bracts a pair at the base of the pedicel, 

 small, subulate : corolla wliite, commonly tinged with rose : stigmas filiform. — Fl. Dan. 

 t. 459 ; Reichenb. Ic. Germ, xviii. t. 1337. — Old fields, N. Atlantic States. (Sparingly nat. 

 from Europe.) 



-t— -(— Indigenous Texan species, cinereous-pubescent or canescent: leaves commonly lobed or 

 dentate : tlowers opening in afternoon sunshine : corolla ferrugineous-silky-hirsute outside in the 

 bud. 



C. herraannioides. Sericcous-tomentulose : stems 3 to 5 feet long, mainl}^ procumbent : 

 leaves oblong or oblong-lanceolate, obtuse, and with sagittate or narrowly cordate base, 

 H to 3 inches long, repand- or sinuate-dentate, sometimes obsoletely so, rather short- 

 petioled ; the veins not plicate-impressed above nor prominent beneath : peduncles rather 

 longer than the leaves, 1-2-flowered : sejjals half inch long or nearly so, oval-oblong, 

 mucronate and obtuse or barely acute : corolla white, an inch long, the border merely 

 angulate. — C. Ilerviannke, Choisy in DC. 1. c. as to Texan plant ; Torr. Bot. Mex. Bound. 

 148, not of L'Her., which is Peruvian and Chilian. — Texas, in dry prairies. Narrow-leaved 

 forms approach the next. 



C. incanus, Vahl. Cinereous or canescent with a close and short silky pubescence 

 (rarely greener and glabrate) : stems filiform, 1 to 3 feet long, mainly procumbent : leaves 

 polymorphous ; some simply lanceolate- or linear-sagittate or hastate ( 1 or 2 inches long, 

 2 or 3 lines wide, obtuse and mucronate, entire, and with the narrow elongated basal lobes 

 entire or 2-3-toothed) ; some pedate, having narrowly 2-3-cleft lateral lobes or divisions, 

 some more coarsely 3-5-parted, with lobes entire or coarsely sinuate-dentate ; some of the 

 early ones ovate- or oblong-cordate and merely sinuate-dentate : peduncles 1-2-flowered, 

 as long as the leaf : sepals a quarter inch long, oval, obtuse, or merely mucronate-tipped : 



