BLACKBERRY 169 



foliolate, the terminal leaflet usually on a longer petiolule 

 than the others, which may be sub-sessile and overlap at 

 the edges : often 5-foliolate on the barren shoots and 

 3-foliolate on those bearing flowers, but occasionally all 

 trifoliolate, or the uppermost may be merely lobed. 



Fig. 39. Blackberry, Rubus fruticosiis, p. 168 (D). 



Leaflets obovate to rhomboid-ovate, or ovate, very 

 variable in size ; coarsely serrate or irregularly toothed ; 

 convex and dark green above, and usually glabrous ; paler 

 green or glaucous, to velvety and even tomentose white 

 or glandular hairy beneath ; or both sides may be green, 

 or hairy. Venation pinnate and prominent below, and 



