CONVOLVDLACE^. 296 



than the limb; ovary half-bilocular, 4-ovuled ; stjle simple; 

 stigmas 2, obtuse; capsule l-celled, 4-seeded. 



Gr. icuXv^, calyx, cTfyi), a covering ; alluding to the conspicuous bracts 

 which envelop the calyx. Herbs, twining or prostrate, with a milky juice. 

 Peduncles l-flowered, solitary. 



1. C. SPITIIAM^'US. L. Convolvulus SpithamsBus. L. C. stans. Jt/r. 

 Stem erect or assurgent; leaves oblong-lanceolate, subcordate, hoary-pubes- 

 cent; peduncles l-flowered, generally longer than the leaves. An erect, 

 downy species, (a. span) 8 — 10 inches high, found in fields and hilly pastures. 

 Stem branching, leafy, bearing one, often two or more, large, white flowers, 

 on peduncles 2 — 4 inches long, issuing from near the root. Leaves 2 — 3 

 inches long, iialf as wide, oval, with an abrupt, cordate base, and on petioles 

 ^ as long. Bracts concealing the calyx. Jn. Per. Erect Biiidicetd. 



2. C. Se'piUM. Br. Convolvulus Scpium. L. 

 Stem twining; leaves sagittate, the lobes being truncate and the apex 



generally acute ; pf(/(nif/es quadrangular, l-flowered; bracts cordate, much 

 longer than the calyx. A vigorous climber, in hedges and low grounds. 

 Stems 5 — 8 feet in length. Leaves cordate-sagittate, 2 — 4 inches long and 

 half as wide. Flowers numerous, large, white, with a reddish tinge, appear- 

 ing in long succession. The bracts are so close to the corolla as to appear 

 like the calyx which they entirely conceal. It is cultivated as a shade for 

 windows, arbors, &c. Jn., Jl. Per. Hedge Calystegia. Rutland Beavty. 



3. CUSCU'TA. 

 Calyx 5 (rarely 4)-clert; corolla globose-campanulnte, 

 4 — 5-c:left, marescent ; stamens 4—5. inserted upon the 

 corolla at the clefts; stigmas 2; capsule 2-celled, circumscis- 

 sile at the base; cells 2-seeded. 



Etymology unknown. Parasitic, leafless lierbs, without verdure, twining 

 from right to left. Fls. in lateral clusters. Cor. with 5, adnate scales below 

 the base of the stamens. 



1. C. Americain'a. 



Flowers pedunculate, in umbellate clusters, pentamerous ; styles erect; 

 stigmas capitate. An extremely delicate vine, found in damp places, by 

 rivulets, &c. The stem is smooth, slender, 3 — 5 feet long, springing from 

 the soil at first, but after having twined itself about the low plants in its way, 

 and becoming fixed upon them by its lateral radicles, it withers away at base, 

 and is henceforth disconnected with the soil. It is of a light-orange color, 

 wholly destitute of green, furnished with a few minute scales, branching, 

 always turninir from right to left, or hanging in festoons. Flowers nearly 

 globose, about a line long and on peduncles of about the same length. Calyx 

 segments round-obtuse. Corolla twice as long, yellowish while. August. 

 Ann. American Dodder. 



2. C. EUROPiE'A. 



Flowers so.ss\\e, in dense, capitate clusters, the parts in 4s and 5s; styles 

 divergent; stigmas acute. Introduced from Europe into the cultivated 

 grounds, N. Y., growing chiefly on flax. Stems filiform, smooth, twining, 

 reddish-orange colored, destitute of green like the foregoing, 2 — 4 feet long. 

 Flowers in small bunches, pale yellow or rose colored. Rare. July. Ann. 



Eurojiemi Dodder. 



