TREES OF NORTH CAROLINA 59 



phaera Platani Howe), that attacks the leaves at the 

 top of the tree and gradually works down: for 

 this reason the planting of this tree is not advised. 

 Dates of flowering: April 27, 1903 ; April 22, 1909 ; 

 April 1, 1910; April 10, 1916. 



ROSE FAMILY 

 (ROSACEAE) 



85. Sorbus americana Marsh. Mountain Ash. 



A small tree or shrub with smooth bark; leaves 

 compound with 9-17 leaflets which are toothed, re- 

 sembling the leaves of the 'Sumach ; flowers small, dull 

 white, in Elder-like clusters 3-5 inches across. The 

 bright red fruits are small, less than % inch in diam- 

 eter, and hang on through the winter. In Canada 

 the Mountain Ash grows in moist and rocky woods 

 and is much cultivated, but in this state it is found 

 only along the summits of the higher mountains and 

 does poorly in cultivation. 



86. Amelanchier Botryapium (L. f.) DC. Swamp 



Shad-bush. 



A slender shrub or small tree growing usually in 

 the low grounds, and rare at Chapel Hill. Leaves 

 obovate, with us usually slightly cordate at base, 

 apex acute, margin with numerous, small, close-set, 

 acute teeth, lower . surface densely white tomentose 

 until maturity or later, whitish green from the first, 

 not purplish. Flowers in nodding racemes, usually 

 about 6-12, both peduncles and pedicels closely pu- 

 besent; calyx lobes pubescent, reflexed at base when 



