156 PLANT LIFE 
The flattened membranous tops of the hairs 
often overlap. and when water is dashed on 
Fig. 20.—Tillandsia usneoides. 1.—A portion of the leafy 
stem, showing the curved form of the stem and leaves. 
II.—One of the hairs on the leaf in section (highly magni- 
fied). The water which is soaked up by the hair passes 
by the darkly shaded cells into the interior of the leaf. 
E, epidermis of the leaf. 
the plant it is held amongst them by capillary 
attraction, the displacement of the air by 
