SIMPLE POWDERED VEGETABLE DRUGS 125 



Vertical walls not distinctly sinuous 



Epidermal cells with inulin Buchu 



Epidermal cells without inulin 



Lower epidermal cells papillose Coca 



Epidermal cells not papillose Uva ursi 



. Trichomes present 



. . . Aggregate (stellate) trichomes 



Glandular trichomes present Castanea 



Glandular trichomes wanting Hamamelis 



. . . Single celled trichomes. 



Sclerenchyma cells present 



Few, large, branching . . . . ; Thea 



Not branching, normal. Trichomes few 



Trichomes few, long. Stomata numerous Pilocarpus 



Trichomes very short. Stomata few Pimenta 



Sclerenchyma cells wanting 



Stomata present 



Trichomes wavy, long, slender Eriodictyon 



, . Trichomes not wavy nor very long 



. . Hair cells with cystoliths Cannabis Ind. 



Cystoliths wanting 



Yellow glands present . , Humulus 



Yellow glands wanting 



Trichomes medium, few. Cuticular markings 



Nebenzellen usually two (India) Senna 



Nebenzellen usually 4 to 5 (African) Senna 



Trichomes large. Cuticular markings 



Stomata large (leaf) Aconitum 



Stomata medium Lobelia 



Trichomes slender, ends thickened Turnera 



Stomata few or wanting 



Trichomes few. Tracheids numerous Dulcamara 



Trichomes numerous 



Long, slender 



Endosperm cells thick-walled Nux vomica 



Endosperm cells thin-walled Strophantus 



Short 



Few, very short Anise 



Ends recurved, longer Chinese galla 



. . Simple, 2- to 5-celled trichomes 



.... Sclerenchyma cells present 



Trichomes bright red Rhus glabra 



Trichomes very few, not red Cacao 



.... Sclerenchyma cells wanting 



Vertical walls of epidermal cells straight, resin present. . . .Matice 



Vertical walls sinuous. Resin wanting (flowers) Arnica 



Glandular trichomes present 



Non-glandular trichomes twisted Salvia 



Non-glandular trichomes warty 



Trichomes large Stramonium 



