CONVOLVULAG&E. 435 



CONVOLVULUS SiiERARDi, Pursh, Fl. ii. 730, does not belong to our flora. It was founded 

 on an incomplete fruiting specimen, West Indian (not from "Carolina "), of C. micranthus, 

 Roem. & Schult. Vide Proc. Am. Acad. 1. c. 



In the first edition the character of CALTSTEGIA has " stigmas very flat " : but in living 

 plants, those of C. sepium are thick, papillose, hardly flattish, or even terete, as some authors 

 have stated. But they are soft and flatter in drying. As a genus Calysteyin entirely fails in 

 North America, as is seen in a series of species which now, with better material, are here 

 reconstructed. 



C. sepium, L., var. Americanus, p. 215. Stigmas in dried specimens from broadly 

 oval (as in the Old World) to narrowly oblong : flower always solitary. Here doubtless 

 C. Maximilian!, Xees, PI. Xeuwicd Trav. IT. Extends to the Pacific coast in Oregon and 

 California. Some of it has been referred to C. occidentalis. 



C. macrostegius, GREENE. Like C. sepium, but " suff rutescent " and large (leaves 4 

 inches long and little narrower) : peduncles 6 to 8 inches long, bearing 2 or 3 flowers within 

 the ample (inch or more long) bracts, and lateral flowers similarly bracteate : corolla short 

 and broad, cream-color (or " pale yellow," Greene:) : stigmas rather broadlv linear. Bull. 

 Calif. Acad. i. 203. C. occidentals, Watson, Proc. Am. Acad. xi. 118. The original is of 

 Guadalupe Island, off Lower California, Palmer. Also San Clemente, off San Diego, Lower 

 California, Aen" & Lijon. 



C. Califomicus, CHOISY, p. 215. This depressed and never twining species extends to 

 the coast ranges of Oregon (Uoicell, Henderson) in a glabrous form, some flowers with 

 broader stigmas, bearing a certain likeness to C. Soldanella. 



C. villosus, GRAY, p. 216. Not at all or only feebly twining: the tomentose bracts to the 

 flower, although more commonly entire and erect, are occasionally, in the most white-vel- 

 vety plants, one or both of them, hastate and short-petioled, so passing directly into 



Var. f ulcratus. Greener, the soff pubescence short and fine : leaves either broadly 

 hastate (as in the type) or narrow and more sagittate; the bracteal pair similar but small, 

 either a little below the flower, or at the base of the calyx, occasionally one or both of them 

 entire : corolla (according to L'ooper) pale yellow, probably only cream-color : stigmas 

 linear. C. luteolus, var. f ulcratus, Gray, p. 216, and the only C. lutcoJus of which there 

 is good evidence of yellow or yellowish corolla ! C. f ulcratus, Greene, Bull. Calif. 

 Acad. i. 208. 



C. occidentalis, GRAY, p. 215. Character needs emendation only in reference to the ex- 

 treme variability of the bracts: these either Calystegia-like and covering (but rarelv sur- 

 passing) the calyx, or variously smaller and shorter, or lanceolate or linear and more 

 foliaceous in texture, then at a little distance below the calyx, always in a pair, except on 

 the 2-3-flowered peduncles, when they may be disjoined. Whenever, as in the original of the 

 species, there is more than a single flower, the bracts are small and narrow. Specimens with 

 solitary flower and ample bracts referred here belong to C. sepium. Generally herbaceous or 

 with barely suffrutescent ba,se, but Mr. Greene finds stems woody to a considerable height. 

 The form with diminished bracts is C. luteolus, Gray, p. 216 (excl. var.), but everywhere 

 with white corolla, or roseate in fading. So that this last name happily disappears. 



Var. tenuissimus, GSAY, p. 215. The commoner form, throughout S. California, in 

 the drier regions usually reaching only a foot or a yard in height : leaves from lanceolate- to 

 linear- or even filiform-hastate : bracts Calystegia-like, either acuminate and surpassing the 

 calyx, or oblong and barely equalling it. This may pass into 



C. longipes, WATSOX, p. 217, which was described from mere branches. It has no bracts, 

 the uppermost reduced subulate leaves are scattered and always alternate. 



C. HavanensiS, JACQ. Suffruticose, prostrate or feebly twining, canescently puberulent 

 and glabrate : leaves thick, oblong-lanceolate or elliptical, sometimes orbicular, obtuse or re- 

 tuse and mucronate, entire (6 to 12 lines long), abruptly contracted into a short petiole: 

 peduncles one-several-flowered : pedicels longer than the calyx : corolla white, not over half- 

 inch long, deeply 5-cleft : lobes acute : stigmas oblong : capsule splitting into several valves. 

 Obs. ii. 25, t. 45, fig. 3 (flower and leaf) ; Griseb. Cat. Cub. 207. C. rwlerarius, HBK. Nov. 

 Gen. & Spec. iii. 96. C. Gnrberi, Chapm. in Bot. Gazette, iii. 11. Ipomcea Ifurnnrnsis, 

 Choisy in DC. Prodr. ix. 368, referred to that genus at a mere venture. C. Jamaicensis, of 



