CONVOLVULACEJE. 



Capsule orbicular, mucronate, smooth, 3-seeded. According to 

 M. Loiseleur Deslongchamps the roots contain a purgative resin in 

 doses of from 15 to 24 grains. 



CALYSTEGIA. 



Two opposite bracts enveloping the flower. Sepals equal. 

 Corolla campanulate. Style 1. Stigma 2-lobed, with linear or 

 oblong cylindrical lobes. Ovary 2-celled, with so short a dis- 

 sepiment that it is 1 -celled at the apex. 



819. C. sepium RBr. prodr. 483. Lindl. synops. p. 167. 

 Convolvulus sepium Linn, sp.pl. 218. Eng. Bot. t. 313. Fl. 

 Lond. t. 13. Common in hedges and among bushes all over 

 Europe, the Caucasus, the banks of the river St. Lawrence in 

 North America. 



Root long, creeping, rather fleshy. Stems long, angular, twining. 

 Leaves smooth, stalked, sagittate, obtuse or truncate or lobed at the 

 base. Flowers large, solitary, usually white ; on an angular peduncle 

 longer than the petiole. Bracts cordate, acute, smooth, longer than the 

 calyx, not more than half the length of the corolla. Root purgative 

 like Scammony but much less active. 



820. C. Soldanella ffimer and Schultz syst. iv. 184. Lindl. 

 synops. p. 167. Convolvulus Soldanella Linn. sp. plant. 226. 

 Eng. Bot. t. 314. A common but beautiful ornament of the 

 sea shore in most parts of Europe ; also on the coast of the 

 Euxine. 



Root creeping. Stems smooth, rather fleshy, procumbent, spreading, 

 not very long, and not twining. Leaves reniform, smooth, rather 

 fleshy, sometimes cordate and angular. Flowers bright pink, very 

 fugitive, opening only in the sunshine, solitary, on an angular peduncle 

 longer than the petioles. Bracts ovate, shorter than the calyx. Stigmas 

 short, subulate. The root is purgative ; it contains according to Mr. 

 Planche 24 per cent, of a green purgative resin. 



BREWERIA. 



Sepals equal. Corolla campanulate. Style 1, divided in two. 

 Stigmas capitate. Ovary 2-celled, with 2 ovules in each cell. 

 Capsule 2-celled. 



821. B.? scoparia Convolvulus scoparius Linn, suppl. 135. 

 Fee cours. ii. 409. Nees and Eberm. handb. ii. 635. plant, med. 

 196. Teneriffe about the town of Santa Cruz ; the Isleta of 

 the Grand Canary and elsewhere. 



A shrub with the aspect of a Genista or a Spartium. Stem round, 

 quite smooth. Branches erect, simple, with distant scattered leaves. 

 Leaves linear, somewhat downy, erect. Peduncles solitary, remote, 

 usually 3-flowered, seldom 1 -flowered.* Sepals silky, ovate, acute. 

 Corolla white, hairy externally. Styles 2. Stigmas capitate. Wood 

 perfumed, smelling strongly o'f roses, yellowish fawn colour veined with 



400 



