216 CONVOLVULACE^E. 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 f unnelform, li to 2 inches long, white, cream-color, or flesh-color : stigmas linear- 

 obfong. DC. Prodr. ix. 405; Gray, 1. c. Calystegia siibacaulis, Hook. Am. Bot. Beech. 

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



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

 low : steins 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-f unnelform, cream-color, an inch long: stigmas nar- 

 row-linear. Calystegia 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-funnclform, pale yellow (sometimes 

 purplish or fading to purple"?): stigmas linear. Iponwta sayitfifolia, Hook. & Arn. Bot. 

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

 Convolvulus Califomicus, Benth. PI. Hartw. 326, not Choisy. California, from around San 

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



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

 and short-petioled, 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. ARVENSIS, 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 white, commonly tinged with rose: stigmas filiform. Fl. Dan. 

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

 from Europe.) 



-) H Indigenous Texan species, cinereous-pubescent or caneseent : leaves commonly lobed or 

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

 bud. 



C. hermannioides. Sericeous-tomentulose : stems 3 to 5 feet long, mainly procumbent : 

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

 1 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 : sepals half inch long or nearly so, oval-oblong, 

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

 angulate. C. Hermannice, 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 : 



