124 



503. QUERCUS PEDUNCULVTA, Willd. ; QUERCUS RoBUR,. . (The Com - 



mon Oak.) 



a. Leaves and fruit. See Bentl. <& Trim., Med. Plants, tab. 248. 



b. Bark. For fig., see Goebel und Kunze, pt. i.,taf. xxix., fig. 1-4. 

 Note. Oak bark is somewhat similar in appearance to large specimens 



of the bark of Bhamnus Frangula ; the latter, however, may be dis- 

 tinguished by its bright reddish colour when the surface is scraped. 

 Quercus pedunculata may be easily distinguished from Q. sessiliflora by 

 the sessile leaves, those of Q. sessiliflora being stalked. 



504. QUEKCUS SUBER, L. (Cork Oak.) 



a. Bark. Two specimens. 



Note. Cork is the much developed epiphlceum of this tree. The 

 younger bark of the tree is known under the name of European alcornoque 

 bark, and is used in tanning. See Per. Mat. Med., vol. ii., pt. L, p. 361. 

 For American alcornoque bark, see Byrsonima laurifolia. 



505. QUERCUS TINCTORIA, Willd. (Quercitron, or Black Oak.) 



a. Inner bark. (Black Oak Bark.) 



Note. The bark is known in commerce as quercitron bark, and is used 

 as a yellow dye. It is official in the U. S. Pharmacopoeia, and is used 

 externally as an astringent. See Per. Mat. Med., vol. ii., pt. L, p. 360. 

 White oak bark (Q. alba) is the kind chiefly used in medicine. Both are 

 official in the U. S. Pharmacopoeia. See Amer. Dispens., p. 692, also 

 Bentley and Trimen, Med. Plants, tab. 251. 



MYRICACE^}. 



506. COMPTONIA ASPLENIFOLIA, Gcerte. (Sweet Fern.) 



a. Herb. 



Note. This plant is used in America as an astringent and alterative 

 tonic. A pillow of the leaves is sometimes used for children suffering 

 from rickets. Amer. Dispens., p. 282. It is not official in the U. S. Phar- 

 macopoeia. 



507. MTRICA CERIFERA, L. (Virginia Candleberry, Wax Myrtle, 



Wazberry, Bayberry.) 



a. Root bark. (Bayberry Bark.) 



b. Wax. (Bayberry Wax.) 

 t c. Section of trunk. 



Note. The powder of the root bark forms a principal ingredient in the 

 favourite powder of the medical botanists or Eclectics of America, viz., 

 composition powder. It is used as a stimulant and astringent for the 

 mucous membrane when in an atonic state. Its powder is excessively 

 irritating to the nostrils, exciting coughing and sneezing, but only for a 

 short time. The wax is used in making ointments. See Amer. Dispens. , 

 p. 535. 



508. MYRICA MACROCARPA, H. et B. 



a. Candles. 



Note. These candles were presented by Dr. Lindley. They are made 

 in Colombia of wax obtained from the fruit. Other species yield wax, 

 as C. cordifolia, L., at the Cape of Good Hope, and C. Carolinensis in 

 Carolina. See P. J. [1], vol. xiii., p. 418 ; [1] , vol. x., p. 450. 



