TREES WITH HIGHLY-DEVELOPED FLOWERS 299 



the trunk is covered with a thick, furrowed bark, while it is 

 thin and smooth above. Suckers are readily formed from 

 the roots, and the branches are ar- 

 ranged spirally and come off from 

 the tree at an acute angle. 



The twigs are stout and covered 

 with a smooth, shining, grey to deep 

 red-brown bark ; the lenticels are 

 few but distinct, transverse, and 

 yellowish. The dwarf shoots (Fig. 

 199, d.s) are stout, prominent, and 

 densely ringed ; and their ruggedness 

 is intensified by the rather promi- 

 nent crescent-shaped leaf-bases, each 

 with five leaf-traces. The cortex, 

 when bruised, and also the flowers, 

 have an unpleasant smell of decaying 

 fish. 



The terminal buds are ovoid, large, 

 and shining, and covered with five 

 or six velvety and fringed bud-scales ; 

 the lateral buds are smaller and 

 pressed against the stem ; the end 

 buds of the dwarf shoots elongate 

 very little and produce each season 

 from three to five leaves crowded 

 together. 



The leaves are alternate and 

 stalked, and have prominent leaf- 

 bases and deciduous stipules. The 

 blade is pinnate and divided into 

 eleven or more sessile, oblong leaflets, 

 always with an odd terminal stalked leaflet. The leaflets 

 are one to two inches long, serrate, smooth above, and 

 slightly hairy below, and have pinnate veins. 



Fig. 199. Winter 

 Shoot of Rowan. 

 d.s, dwarf shoots with 

 numerous scale-scars ; 

 l.s, foliage leaf-scars. 



