ISO JOURNAL OF THE ARNOLD ARBORETUM [vol. v 



blooms nearly a month later than the last species, and after the leaves are 

 nearly grown. The flowers are pale pink in the bud, but soon fade to white, 

 and are much smaller than in R. roseum. 



Vaccinium arboreum Marsh. The Tree Huckleberry, so-called, is 

 usually only a shrub in size here. It is abundant in the more open rocky 

 parts of the valley and on top of the mountains, but is most common 

 on dry rocky slopes and in glades on the south slopes, where plants less 

 than half a meter in height were noted in fruit. 



Vaccinium arboreum var. glaucescens (Greene) Sarg. The form with 



leaves pale and glaucous beneath is found with the type, but is less abund- 

 ant. 



Vaccinium stamineum L. This shrub, which grows to a height of from 

 five decimeters to a meter, is very common in rocky ground, especially 

 on the south slopes of Blackfork Mountain. It is also sometimes found 

 in the valley and on top of the mountains. 



Vaccinium vacillans var. crinitum Fernald. This is the common low 

 Huckleberry of the Ozark region, and is one of the most abundant shrubs 

 in rocky ground in the valley, on the south slopes and on the mountain 

 tops. In the glades and rocky openings, where it covers many acres, it 

 seldom exceeds 3 or 4 decimeters in height. The fruit is abundant and 

 is often gathered by the country people. The name Blueberry, by which 

 it isjcnown in the Eastern States, is not recognized here. 



ligustrina (L.) Britton. This shrub is confined to wet rocky 

 and sandy places in the valley, in close proximity to the streams. 



Xolisma 



SAPOTACEAE 



Bumelia lanuginosa (Michx.) Pers. This small southwestern tree is 

 not rare in open rocky ground in the valley and on top of the mountains. 

 It also occurs in glades and on dry rocky slopes on the south side of the 

 mountains. In the Southwest it is generally known as Gum-elastic, and 

 in this seetion it is sometimes called Chittim-wood. 



EBEXACEAE 



Diospyros virginiana L. The Persimmon is not uncommon in rocky 



grou 



Diospyros virginiana var. platycarpa Sarg. This variety, with its 

 larger, earlier ripening fruit and pubescent leaves, is commoner than the 

 typical form here, as throughout most of the Ozark region. 



STYRACEAE 



Balesia monticola var. vestita Sarg. A few small specimens of the 

 Silverbell-tree were seen in the valley along the rocky creek banks, but it 



rich coves. 



Mountain 



