yji BOTANY AND PHARMACOGNOSY. 



167. PODOPHYLLUjM.— Light brown (Fig. 223) ; starch 

 grains somewhat spherical, 5 to 12 /u, in diameter, single or 2- to 

 6-compound; tracheae few, scalariform, spiral, reticulate, or with 

 simple pores. 



168. CHENOPODIUM.— Yellowish-brown ; seeds blackish, 

 shiny, reniform, about 150 /* in diameter ; seed-coat with polygonal, 

 thin-walled pigment cells; numerous starch grains and small 

 aleurone grains. 



B. STARCH GRAINS FEW OR NONE. 

 a. CONT.MNING CALCIUM OXALATE. 



•J. In Rosette Aggregates. 

 I. Small Crystals in Aleurone Grains. 



169. ANISUM.— (See No. 68.) 



170. CARUM. — Dark brown (Fig. 247) ; calcium oxalate 

 crystals in rosette aggregates, 0.5 to i /j, in diameter in aleurone 

 grains ; fragments of light yellow vittse, together with nearly 

 isodiametric or polygonal, yellowish-brown, inner epidermal cells 

 of pericarp; sclerenchymatous fibers few, thick-walled, slightly 

 lignified, with numerous simple pores ; oil globules numerous. 



171. CORIANDRUM.— Light brown (Fig. 245) ; calcium 

 oxalate crystals in rosette aggregates and 3 to 7 ,«. in diameter in 

 aleurone grains ; fragments of light yellow vittse and long, nar- 

 row, yellowish, inner epidermal cells ; sclerenchymatous cells irreg- 

 ularly curved, yellowish, thick-walled, lignified and with numerous 

 simple pores; oil globules numerous. 



172. FCENICULUM.— (See No. 70.) 



2. Crystals Not Less Than 10 ^ in Diameter. 



* Pollen Grains Numerous. 



' i7i- CARYOPHYLLUS.— Light brown (Fig. 312); pollen 

 grains tetrahedral, somewhat spherical, with three pores, about 

 15 yu in diameter; calcium oxalate crystals in rosette aggregates 

 10 to 15 /x in diameter, occasionally in crystal fibers; sclerenchy- 

 matous fibers spindle-shaped, thick-walled, strongly lignified and 

 with simple oblique pores ; tracheae spiral, thick-walled ; oil glob- 



