POWDERED DRUGS AND FOODS. 703 



B. In monoclinic prisms. Continued. 



b. Only non-glandular hairs present. 



Characteristic stone cells 16. Cardamomum (Ceylon) 



Crystal fibers 17. Hamamelidis Folia 



Fragments reddish with alkalies 18. Senna 



Non-glandular hairs few 19. Uva Ursi 



c. Glandular and non-glandular hairs wanting. 



Epidermal cells with papillae 20. Coca 



Few fragments of tissues 21. Guaiacum 



Few crystal fibers and non-glandular hairs. .. .22. Uva Ursi 



C In crystal fibers. 



Rosette-shaped crystals numerous 23. Granatum 



Crystal fibers few 24. Uva Ursi 



D. In sphenoidal micro-crystals. 



(7. With hairs. 



Hairs few 25. Belladonnse Folia 



Non-glandular hairs numerous 26. Tabacum 



Starch grains 10 to 35 M 27. Solanum Carolinense 



b. Hairs few or wanting. 



Starch grains 5 to 7 m 28. Dulcamara 



II. Calcium Oxalate Crystals wanting. 



A. Cystoliths of calcium carbonate present. 



Glandular and non-glandular hairs 29. Cannabis Indica 



Stone cells characteristic 30. Ruellia 



B. Calcium carbonate wanting. 



o. Glandular and non-glandular hairs present, 

 a Fragments of pappus present. 



Pollen grains 10 to 20 At 31. Eupatorium 



Pollen grains about 25 M 32. Grindelia 



/3 Fragments of pappus wanting. . 



1. Glandular hairs with i- and 2-celled heads. 



Non-glandular hairs characteristic. .. .33. Digitalis 



2. Glandular hairs with i- to 8-celled head. 



Odor characteristic 34. Hedeoma 



Non-glandular hairs twisted 35. Marrubium 



Non-glandular hairs i- to 8-celled. 



36. Mentha Piperita 

 Non-glandular hairs i- to 3-celled. .T^y. Scutellaria 

 Non-glandular hairs parallel with surface of leaf. 



38. Salvia 



