98 THE ELEMENTS OF VEGETABLE HISTOLOGY 



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PLATK 37. Nonglandular Plant Hairs. 



1. Mullein leaves. (Simple, multicellular, branched.) 2. Geranium (Pelar- 

 gonium) stem. (Multicellular, multiseriate.) 3. Althwa leaves. (Compound, 

 unicellular.) 4. Arnica flowers. (Bicellular, biseriate.) 



