522 POWDERED DRUGS 



133. CIMICIPUGA 



Powder. Light or dark brown; starch grains, numerous, simple or compound, 

 spherical or polygonal (2 to 15 n in diam.) ; tracheas, mostly with bordered pits and 

 usually associated with lignified wood fibers; yellowish-brown fragments of epi- 

 dermis. 



532. CINCHONA 



Powder. Reddish-brown, bast fibers, large spindle-shaped (300 to 1500 /* long) 

 often showing lamellated walls; starch grains, simple or 2 to 5 compound, nearly 

 spherical (3 to 12 n in diam.); calcium oxalate in wedge-shaped micro-crystals; 

 reddish-brown fragments of cork. (See Fig. 296.) 



532. CINCHONA RUBRA 



Powder. Light brown to brown; elements similar to those of Cinchona, but 

 starch grains are usually fewer and smaller. 



169. CINNAMOMUM SAIGONICUM 



Powder, Yellowish or reddish-brown; starch grains simple or compound, 

 ellipsoidal or polygonal (3 to 20 /* in diam.); stone cells, irregular colorless or filled 

 with a reddish-brown amorphous substance; bast fibers having thick slightly ligni- 

 fied walls, single or in groups (300 to 1500 /xlong) ; reddish-brown cork fragments. 

 (See Fig. 300.) 



167. CINNAMOMUM ZEYLANICUM 



Powder. Light or yellowish-brown; starch grains simple or compound, ellip- 

 soidal or polygonal (3 to 20 n in diam.); stone cells, numerous, irregular, colorless 

 or containing reddish-brown amorphous substance; bast fibers, with thick, slightly 

 lignified walls, spindle-shaped (300 to 1000 n long). Calcium oxalate raphides (5 to 



10 ft long) sometimes present. 



68. COLCHICI CORMUS 



Powder. Light to grayish-brown; starch grains numerous, simple or 2 to 6 com- 

 pound, spherical or polygonal (3 to 30 M in diam.) ; few spiral or scalarif orm tracheae; 

 few fragments of reddish-brown epidermis. 



69. COLCHICI SEMEN 



Powder. Light brown; parenchyma of endosperm thick- walled with simple 

 pits and containing aleurone grains (3 to 15 n in diam.) and oil globules; cells of seed 

 coat somewhat collapsed, having thin reddish-brown walls; and a few small ellip- 

 soidal starch grains (5 to 16 jt in diam.). 



544. COLOCYNTHIDIS PULPA 



Powder. Yellowish- white or buff; consists chiefly of parenchyma cells usually 

 in fragments; tracheae only occasional; from the seed coats few stone cells which are 

 nearly isodiametric or irregular; few oil globules and aleurone grains. 



386. CORIANDRUM 



Powder. -Light brown; fragments of endosperm, filled with aleurone grains 

 usually containing aggregates of calcium oxalate, and oil globules; sclerenchyma 

 fibers, yellowish thick- walled, irregularly curved; few fragments of yellow oil 

 reservoirs, and polygonal epidermis; calcium oxalate aggregates (3 to lo/u in diam.) 

 may be separated from the aleurone grains. 



368. EUCALYPTUS 



Powder. Green; epidermis, thick- walled and strongly cuticularized; palisade, 

 very numerous, 3 to 4 rows deep, in which occur large oil reservoirs containing 

 yellowish contents. Calcium oxalate of rosettes or mono-clinic prisms (15 to 30 n 

 in diam.), in the spongy parenchyma are vascular tissues and few slightly lignified 

 bast fibers. 



382. FCENICULUM 



Powder. Yellowish-brown; endosperm cells filled with aleurone grains each 

 with a rosette of calcium oxalate (about 2 n in diam.) ; yellowish-brown fragments of 



011 reservoirs; sclerenchyma fibers few, strongly lignified; spiral or annular tracheae, 

 few; parenchyma cells, numerous; sometimes with thickened walls. 



