ASCENDING PART. HERBAGE. 13 



ports of Ivy are peculiar Tendrils, not Roots. 

 Footstalks (23) sometimes perform the office 

 of Tendrils, as in Clematis cirrosa. 



6. Glandula, a Gland, a small tumour, discharging 

 a fluid, either resinous, oily, or saccharine. 



7. Pilus, a Hair, including all the various hairy, 

 woolly, bristly, or even tubercular, clothing (or 

 pubescence) of plants. Such hairs are either 

 simple, hooked, forked, starry, or branched, 

 generally jointed and tubular ; either harmless, 

 pungent, or stinging; erect, close-pressed, or 

 deflexed ; flexible, rigid, or brittle and decidu- 

 ous. They protect plants against heat and cold, 

 or the attacks of animals. They are very often 

 excretory ducts, discharging more or less of an 

 oily, glutinous, odoriferous, or colouring fluid. 



