BOTANY OF SANTA CRUZ ISLAND. 417 



cuneate-obovate, toothed or cleft chieily at the apex: cymes 

 very loose: calyx altogether rotate, with no tube; bracteoles 

 narrow and only half as long as the broadly-lanceolate seg- 

 ments: petals obovate-oblong, not nnguiculate, but nar- 

 rower at base, 3 lines long, far surpassing the calyx, clear 

 white: filaments all subulate, those opposite the petals only 

 I the length of the other 5. 



lone, xlmador county: collected long ago by Mr. Harry 

 Edwards, and more recently by Mrs. Curran, and by Dr. 

 Parry. A very pretty species, with showy flowers, which 

 are altogether those of an ordinary Potentilla, save that 

 the filaments are very strongl}^ dilated; and the genus, as 

 most authorities now think, is rather artificial, and should 

 perhaps be suppressed, following Bentham and Hooker. 



Convolvulus Bixghami^. Perennial from creeping root- 

 stocks, the stems 3 — 6 feet long, twining or trailing : leaves 

 glabrous, oval or oblong, rather abruptly acute, the base 

 with a pair of obtuse parallel or very little divergent has- 

 tate lobes: peduncles 1-flowered: bracts oval to narrowly 

 oblong, 4 lines long, flat and closely subtending and ap- 

 pressed to the calyx, which they are too small to half con- 

 ceal : catyx 6 — 8 lines long : corolla pure white : stamens 

 rather short, the tips of the anthers attaining to the base 

 only of the linear stigmas. 



In marshy places about Burton's Mound, in the city of 

 Santa Barbara; collected in 1886, by Mrs. R. F. Bingham, 

 and the writer. Its rhizomatous subterranean parts place 

 it in close affinity with C. sepiuin, from which its peculiar 

 bracts well distinguish it, and remove it far enough from 

 the two suffrutescent species which are most common in the 

 western parts of California, namely, G. occidentalis and C. 

 luteohis. These two most distinct species have been very 

 unfortunately run into one by their author, in the Synopti- 

 cal Flora Supplement. Perhaps some imperfect specimens 

 of the plant here defined as new may have led to this con- 

 fusion; for the author speaks of some in which the bracts 



29— Bull. Cal. Acad. Sci. II. 7. Issued June 3, 1887. 



