106 



POLYGONACE^E. 



427. COCCOLOBA UVIFEBA, L. (Seaside Grape.') 



a. Bark. 



b. Extract. (Jamaica Kino.) Two specimens. 



Note. Jamaica kino is made by evaporating a decoction of the leaves, 

 wood, and bark of the tree. The wood yields a red dye. See Lindley's 

 FL Med., p. 353. 



428. POLYGONUM BISTORTA, L. (Bistort.) 



a. Boot. See Bentley and Trimen, Med. Plants, tab. 212. 

 Note. The root is twice twisted npon itself, whence its name. It con- 

 tains tannin and starch, and was formerly nsed for making an astringent 

 gargle and injection. See Per. Mat. Med., vol. ii., pt. i., p. 503. 



429. RHEUM COMPACTUM, L. 



a. Root. (French Rhubarb, round.) 



b. Root. (Ditto, fiat.) 



Note. These specimens were presented by Prof. Guibourt to Dr. 

 Pereira, and by him to the Pharmaceutical Society. French rhubarb 

 may be known by its irregular shape, and by the transverse fracture 

 showing two radiate zones. For fig., see P. J. [3], vol. ii., p. 1010; 

 Hist, des Drag., t. ii., p. 430, figs. 481, 483. The flat pieces are pro- 

 bably produced by Eheum rhaponticum, L. Per. Mat. Med., vol. ii., 

 pt. i., p. 493. 



430. RHEUM EMODI, Wall. 



a. Root. (Large Himalayan Rhubarb.) 



Note. This rhubarb was imported into London in 1840. It differs 

 entirely in appearance and structure from commercial rhubarb. For 

 description, see Per. Mat. Med., vol. ii., pt. i., p. 491 ; P. J., [1] , vol. iv., 

 p. 449. This specimen formerly belonged to Dr. Pereira's collection, and 

 was presented to him by Dr. Wallich. 



431. RHEUM OFFICINALE, Baill. 



a. Rootstock. (Russian Rhubarb, Turkey Rhubarb, Russia 



Brown Rhubarb.) 



Note. This kind of rhubarb has not been exported from Eussia since 

 I860. Specimen a is the one from which Pereira's description was 

 taken. The Eussian label, a copy of which is given in his work, is pre- 

 served with the specimen. This specimen was collected in 1840. See 

 Per. Mat. Med., vol. ii., pt. i., p. 487. A specimen of the plant in flower 

 is in the Herbarium of this Society. See P. J. [3], vol. vi., p. 861. 



b. Rootstock. (Russian Rhubarb.) 



Note. This specimen was brought from Eussia by Mr. T. Greenish, 

 in 1874. Eussian rhubarb is distinguished by the large size of the holes 

 made in it, which are large enough to admit the end of the little finger, 

 by its surface having been sliced off, and by its structure resembling that 

 of East Indian Ehubarb. See Bentl. & Trim., Med. Plants, tab. 213, 215. 



c. Rootstock. (East Indian Rhubarb, Chinese Rhubarb.) 



d. Ditto, rounds. Very fine specimens. 



e. Ditto, flats. Ditto. 



Note. This rhubarb is probably derived from the same species as the 



