POWDERED DRUGS. 
293 
compound ; parenchymatous cells with irregular yel- 
lowish and reddish tannin masses ; calcium-oxalate 
crystals rosette-shaped, about 20 ft in diameter. 
83. Rubus. — Light brown, bast fibers numerous, 
long, thick-walled, lignified ; calcium oxalate in rosette- 
shaped crystals 25 to 30 ft in diameter ; starch grains 
nearly spherical, 3 to 7 ft in diameter, single or com- 
pound. 
84. Stillingia. — Light brown ; sclerenchymatous fi- 
bers very long, thick-walled and swelling perceptibly 
in potassium hydrate solution ; starch grains spherical 
or ellipsoidal, 15 to 30 ft in diameter; secretion cells 
containing oil, resin and a brown pigment ; calcium- 
oxalate crystals rosette-shaped, 35 ft in diameter. 
ft Fibers with Relatively Thin Walls and not Strongly Lignified. 
85. Euonymus. — Light brown ; bast fibers long, thin- 
walled, not lignified, the walls frequently modified to 
mucilage and possessing numerous small more or less 
oblique pores, and irregular ends; starch grains spher- 
ical, 4 to 10 ft in diameter; cork, thin-walled, white; 
secretion cells with yellowish or brownish masses ; 
calcium-oxalate crystals rosette-shaped, 15 to 20 ft in 
diameter. 
** NO RESIN OR TANNIN MASSES. 
86. Althaea. — Light brown ; sclerenchyma fibers long 
and not strongly lignified ; crystals of calcium oxalate 
rosette-shaped, about 25 ft in diameter; starch grains 
somewhat ellipsoidal 10 to 20 ft in diameter. 
2. SCLERENCHYMATOUS FIBERS WANTING. 
* CONTAINING TANNIN, 
f With Oil-Secretion Reservoirs. 
87. Caryophyllus.— (See No. 135.) 
88. Pimenta. — Dark brown ; calcium-oxalate crystals 
rosette- shaped, occasionally in monoclinic prisms, 
