ASCENDING PART. HERBAGE. 13 



stalks (23) sometimes perform the office of Ten- 

 drils, as in Clematis cirrosa. 



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

 a fluid, either resinous, oily, or saccharine. 



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

 woolly, bristly, or even tubercular, clothing (or 

 pubescence) of plants. Such hairs are either sim- 

 ple, hooked, forked, starry, or branched, gene- 

 rally jointed and tubular ; either harmless, pun- 

 gent, or stinging ; erect, close-pressed, or deflex- 

 ed ; flexible, rigid, or brittle and deciduous. 

 They protect plants against heat and cold, or the 

 attacks of animals. They are very often excre- 

 tory ducts, discharging more or less of an oily, 

 glutinous, odoriferous, or colouring fluid. 



