418 CALIFORNIA ACADEMY OF SCIENCES. 



are "obloug and barely equalling" the calyx. They are 

 often narrowly oblong, but they are always shorter than the 

 calyx and never broad enough to come near covering it. 



This plant being removed, I may speak positively to the 

 eifect that there are no transitions between C. occidentalis 

 and C. luteolus. In the former the broad, carinate-con- 

 duplicate leafy bracts are inserted close under the calyx, 

 which they wholly conceal. In the latter the bracts are 

 merety subulate small affairs, always situated at the good 

 distance of a half inch or more below the calyx, their tips 

 not reaching its base. The flowers of the former are one 

 third larger, and their anthers equal or surpass the stigmas, 

 while in C. luteolus the tips of the anthers come up only to 

 the base of the stigma. The latter is a poor twiner, pre- 

 ferring to spread about over the ground or low bushes; 

 although in age, like a grape vine, it will spread over the 

 head of a small oak and hide it with its profusion of leaves 

 and flowers. G. occideu talis, although it becomes shrubby 

 or woody, is from first to last a close i winer, never trailing 

 about, but its stems and branches always spirally twisted 

 around their support : and finally, the two have each its own 

 geographical limits. C. occidentalis is wrongly credited to 

 the San Francisco region. I do not know of its occurrence 

 north of Monterey, nor of the existence of C. luteolus south 

 of that point. The corollas of both have an uncommon 

 durability among those of their kindred. Those of C. lute- 

 olus I have long observed to gather up their folds loosely at 

 nightfall of their first day, and unfold them again in the 

 morning for the whole of the second day; and they com- 

 monly acquire a deep shade of purple for this second day 

 of their existence. And now that I have the two species 

 growing side by side at Berkeley, I find that the southern 

 species, C. occidentalis, does the same, except that the corol- 

 las do not very perceptibly change their hue for the second 

 day. I should perhaps say here that the corollas of the 

 new C. Biiighamice, like those of their ally, 0. sepium, last 

 for one day only. 



