762 



BOTANY AND PHARMACOGNOSY. 



133. CYPRIPEDIUM. Yellowish or brownish-black; cal- 

 cium oxalate in raphides about 40 /x long ; starch grains somewhat 

 spherical, 2 to 4 /a in diameter, single or compound ; tracheae 

 spiral, scalariform or with simple pores ; sclerenchymatous fibers 

 long, thin-walled; parenchyma thick-walled, with numerous 

 simple pores (Fig. 213). 



Fig. 306. Strophanthus: H, fragments of upper portion of non-glandular hairs; 

 L, basal portion of non-glandular hairs; E, cells of endosperm with aleurone grains (A) 

 and starch grains (S); P, parenchyma of cotyledons with aleurone grains; T, tracheae; 

 C, collapsed cells of seed-coat; A, aleurone grains; O, parenchyma containing oil globules. 



134. VERATRUM VIRIDE. (See No. 59.) 



135. HYDRANGEA ARBORESCENS. Raphides 200 /x 

 long; starch grains 4 to 15 /x, in diameter; numerous sclerenchyma 

 fibers with very thick walls, narrow lumen and simple pores. 



Calcium Oxalate in Sphenoidal Micro-crystals. 



136. BELLADONNA RADIX. (See No. 117.) 



137. CINCHONA. (See No. 152.) 



