CLASSIFICATION OF VEGETABLE DRUGS 55 



Irregular pieces; periderm greenish-brown, glossy; inner surface 

 lighter, finely striate; bast wavy, irregular, 



Primus Virginiana, 203 

 (c) BAST TANGENTIALLY STRIATE: 



Long, thin bands rolled into disks; periderm greenish-orange; inner 

 surface white, silky; bast fibers long; bark flexible, 



Mezereum, 365 



Thin, tough bands; periderm blackish; inner surface lighter, smooth; 

 bast fibers in elongated wedge-shaped groups, 



Rubus, 217 N.F. 



Thin, flexible quills or bands; periderm thin, yellow-brown; inner 

 surface white, finely striate; bast fibers long, silky, 



Gossypii Cortex, 3443, N.F. 



Quilled or curved pieces; periderm ash-gray, covered with blackish 



patches; scaly; inner surface smooth, tawny, Euonymus, 326, N.F. 



In strips or quills; periderm brown-gray, with purplish-brown 



stripes, covered with small brownish lenticels, inner surface white 



or brownish, Viburnum Opulus, 540, N.F. 



(d~) BAST CHECKERED: 



Brownish- white pieces, nearly deprived of corky layer; bast fibers 

 in rows, crossed by numerous medullary rays; mucilaginous, 



Ulmus, 109 

 Pale brown pieces, deprived of corky layer; inner surface ridged; 



astringent, Quercus, 102, N.F. 



Pale brown-white pieces; smooth on both sides or outer surface 

 with fragments of red-brown bark; bast fibers pale brown, im- 

 bedded in white wood and crossed by white medullary rays, 



Quillaja, 212, N.F. 

 (e) BAST WITHOUT STRIATION: 



Thin quills or fragments; outer surface dark brown, somewhat 



warty; inner surface yellowish, finely striate, Granatum, 366 



Irregular chips or longitudinal pieces with outer corky layer, brown- 

 ish-gray or reddish-brown and deeply furrowed, Aspidosperma, 447 

 Thin pieces; periderm glossy brown, dotted; inner surface whitish, 

 smooth; numerous groups of stone cells, 



Viburnum Prunifolium, 541 

 Thin quills; periderm dark brown with white dots; inner surface 



smooth, brownish-yellow; rows of crystal cells Frangula, 333 



Curved or quilled pieces, outer surface brown-gray; inner surface 



yellowish, darkening with age; finely striate; bast bundles in 



groups; medullary rays narrow, .... Rhamnus Purshiana, 334 



Curved fragments; periderm brownish gray, with black dots; inner 



surface whitish, smooth; medullary rays narrow, 



Xanthoxylum, 270 



8. TWIGS 



Greenish-gray; bark rather thick; wood in one or two circles (U.S.P., 

 1890), Dulcamara, 514, N.F. 



9. WOODS 



Yellowish-white billets; free from bark; consists mostly of prosen- 

 chyma, with large ducts, radially striate; narrow niedullary 



rays; very bitter, Quassia, 287 



Wood dark red; parenchyma in about four rows, forming irregular 

 circles; medullary rays single-rowed; ducts large, 



Santalum Rubrum, 239 



Brownish-red; wood parenchyma in broad, wavy circle; medullary 

 rays composed of about two rows of cells; ducts fine, 



Hsematoxylon, 238, N.F. 



10. PITHS 



Cylindrical, white, very light and spongy, Sassafras Medulla, 172 

 C. Outgrowths from Overground Stems. 



