Convolvulus. COXYOLVULACE,£. .,.;;; 



1. CONVOLVULUS, Linn. Bindweed. 



Corolla campanulatc or short and open-fumielforru, with more or less 5-angulate 

 or obscurely 5-lobed border, deeply plaited down the sinuses in the bud ; the plaits 

 convolute, commonly straight, sometimes contorted (either in the same direction as 

 the plaits overlap or in the opposite). Stamens included. Style filiform : stigmas 

 2, subulate, or in ours flat, and from narrowly linear to oval. Capsule globose, 

 2-celled (sometimes imperfectly so) : cells 2-ovuled and commonly 2-seeded : dehis- 

 cence when perfect septifragal, i. e. the valves separating from the partition. Em- 

 bryo with broad and foliaceous cotyledons, folded and crumpled in the seed. — 

 Stems twining, trailing, or in some erect and bushy. Peduncles solitary in the 

 axils, in ours one-flowered, or occasionally 2-fiowered. Ours are all perennial herbs. 



A rather large genus in the Old 'World, sparingly represented in the New. 



[posHEA (Pharbitis) purpurea, and I. Nil, the common species of annual Morning-Glory 



of cultivation and occasional naturalization in the Atlantic States, natives of Mexico, &c, might 

 be expected to occur, either indigenous or adventive, in the southern part of the .State ; but we 

 have not met with them. 



Calystegia, II. Brown, in view of the CaUfornian species, is not even a well-marked section. 

 All the following species would belong to it except the last, and the next to the last, which is 

 ambiguous. 



-.: .1 pair of thin membra naeeo-fil iacecms bracts close to the calyx, and enveloping it 



or partly so. — (Calystegia, R. Brown.) 



-(- Herbage rather fleshy : stigmas ovale or oval. 



1. C. Soldanella, Linn. Maritime, low, glabrous : stems a foot or less in 

 length, trailing, rarely attempting to climb : leaves kidney shaped, entire or ob- 

 scurely angulate-Iobed, an inch or two broad, long-petioled : bracts ovate-cordate, 

 not longer than the sepals: corolla pink or purplish, an inch or more in length : 

 capsule becoming one-celled. — Calystegia Soldanella & C. reniformis, It. Brown. 



Saudy sea-shore, San Diego and northward to Puget Sound. Widely distributed over the 

 Pacific and European coasts. 



+- +- Not fleshy: stigmas I 'near, or at most oblong-linear. 



2. C. OCCidentalis, Gray. Glabrous or minutely pubescent: stents twining, 

 several feet high: leaves from broadly ovate-triangular with a deep and narrow 



basal sinus to narrowly Ian late-hastate; the posterior lobes often l-2-toothed: 



peduncle elongated, not rarely 2-fiowered within the bracts; these ovate or rare! j 



oblong, i nl\ surpassing and enclosing the calyx : corolla whil - pinkish, 



1 to I .1 inches long, and the expanded limb as wide. — Proc. Am. Acad. xi. 89. 



Dry hills, through the western part of the Stat.-, from near San Francisco (Dr. Gibbons, with 



' ovate-lanceolate and ool enveloping bracts, and as 1 Rower from the axil of one of 



them) to San Diego (Cooper, Cleveland) : vox. < ictreme turn, with 2-flowered 



peduncles and very narrow linear-lanceolate sagittate leaves, Santo Barbara, Nuttall. The oppo- 

 site extreme, resembling a large and broad-leaved C. septum, and with peduncle occasionally 

 8-flowered, is from Guadalupe Ulan. I, off Lower California, Dr. Palm . The stigmas are linear : 

 i li ' | le in age inclines t,, split in two. 



( '. sepium, I. inn., wlii.l cm s northeast of < lalifornia, and extends round the world, is distin- 

 guished by its ovate or oblong stigmas, and only one-flowered peduncles have been observed. 



.'!. C. Californicus, Cboisy. Minutely and rather densely pubescent, or some- 

 what glabrate, a span or less high and Bubcaulescent, or producing trailing stems n 

 span to a fool long li tves inostlj obtuse, from ovate or obovate and obscurely has- 

 tate to triangular-hastate and the later i , acute, and the basal lobes so times 



I — 2-toothed, long-petioled: peduncles shorter than the petiole: bracts oblong or 

 oval, not unlike the outer sepals ami equalling them, or rather shorter: corolla 



