172 OF THE FULCRA, 



tree forms a hook, and grasps the neighbouring 

 branch, serving to suspend the fruit, which is very 

 heavy, resembling a bunch of grapes, and indicates 

 the plant in question to be either a MicJidia or an 

 Uvaria. 



6. Gla?idula, a Gland, is defined by Linnaeus as a 

 litde tumour discharging a fluid. Such are abun- 

 dant on the stalk and calyx of a Moss Rose^^. 123, 

 Curt. Mag. t. 69, and between the serratures of 

 the leaf of Saliv pentandraj Bay-leaved Willow; 

 also on the footstalks of Viburnum OpuhiSy Engl. 

 Bot. f, 332, and various species of Passion-flower. 

 Tlie liquor discharged is in the first-mentioned in- 

 stances resinous and fragrant, in the latter a sort of 

 honey. 



7. Pilus, f. 1 24. A Hair. This, according to the 

 Linnaean definition, is an excretory duct of a bristle- 

 like form. Such it undoubtedly is in the Nettle, 

 Urtica, Engl. Bot. t. 148, and /. 1236, whose 

 bristles are tubular and pervious, having each a bag 

 of poison at its base, like the fang of a serpent ; ajs 

 well as in numerous plants whose hairy coats exude 

 a viscid moisture. But the hairs which clothe many 

 plants are merely a protection against cold, heat, or 

 insects. Sometimes they are hooked, sometimes 

 branched and entangled, as in Mullein, Verhascumy 

 t. 549, &c. In Croton, Solanum, and Lavatera^ 



