86 CONVOLVULACE®. (MORNING GLORY FAMILY.) 
angular nutlets armed with prickles on the margins; limb of the rotate corolla 2 to 5 
lines in diameter, blue, rarely white. 
5. CYNOGLOSSUM, Tourn. 
Chiefly distinguished from the preceding by the broad large leaves, the bractless 
racemes and the nutlets clothed over the whole back with stout barbed prickles. 
1. C. grande, Dougl. About 2 ft. high, pubescence soft; radical and lower stem 
leaves ovate oblong, usually rounded or cordate at the base, long petioled; panicled 
racemes or cymes small, on a long naked terminal peduncle; corolla tube exceeding the 
calyx; its limb blue to violet, with usually purple crests; 3 to 5 lines wide. 
6. PECTOCARYA, DC. 
Structure of the minute white flowers similar to the preceding; nutlets widely spread- 
ing in pairs, horizontal, oblong or almost linear, surrounded by an incurved wing-like 
border which is toothed, the apex beset with hooked bristles. 
1. P. penicillata, A. DC. Very slender, diffusely branching, spreading, with nar- 
row linear leaves, and small flowers scattered the whole length of the stem, on very short 
pedicels; nutlets only a line long. 
Orper 41. CONVOLVULACEA. 
Herbs, usually twining or trailing, with alternate leaves (or scales) and regular perfect 
flowers; the stamens as many as the lobes or angles of the corolla and alternate with 
them (5, rarely 4); the free persistent calyx of mostly distinct imbricated sepals; ovary 
2-3-celled; capsules generally globular; seeds 1 to 4. Inflorescence axillary. 
Corolla plaited in the bud; style single.............. 0... cece ee eee Convolvulus. 1 
Corolla. 5-clefts. styles Qe isa isisssieseveisin wiewis wig 'areiaioie aie wieile ¥eieieGais ole Siero’ eee a eo 8 we Cressa, 2 
Twining parasites, leafless, yellowish.............cesceeeecceeceeereeeee Cuscuta. 3 
1 CONVOLVULUS, L 
Corolla campanulate or short and open funnel-form, with a 5-angulate or obscurely 
5-lobed border, deeply plaited down the sinuses in the bud. Stamens included. Style 
filiform; stigmas 2, in ours flat, from linear to oval. (See ADDENDA.) 
* A pair of bracts close to the calyx, enveloping it. 
1. ©. Soldanella, L. Maritime, low, smooth; stems a foot or less in length, trail- 
ing; leaves reniform entire or obscurely angulate-lobed, an inch or two broad, long 
petioled; corolla pink, purplish, or nearly white. 
