CRUDE DRUGS. 



489 



50 mm. long, i to 3 mm. in diameter, nodes with a circular scar, 

 not much thickened ; externally light or dark brown, longitudinally 

 wrinkled, somewhat annulate from scars of bud-scales, mostly 

 smooth between the nodes, upper surface of nodes marked by 



Fig. 213. 



A, Cypripedium hirsutum; B, Cypripedium parviilorum, the flower 

 of the latter being the smaller. 



Stem-scars, side and under surface with root-scars, or usually with 

 three to five roots, fracture short or fibrous ; internally light or 

 dark brown, cortex 0.5 mm. thick, separable from the central cyl- 

 inder ; odor faint ; taste bitter, slightly acrid. 



