1^4 JOURNAL OF THE ARNOLD ARBORETUM (vol. v 



Plaianus occidentalis var. glabrata (Fernald) Sarg. This variety, 

 with the leaves early glabrate and with its lobes entire, was collected 

 on the rocky banks of Big Creek a short distance below Page. 



ROSACEAE 



Amelanckier canadensis L. The Juneberry is found on open rocky 

 ledges from the valley to the top of the mountain. It is usually shrubby, 

 seldom exceeding two or three meters in height. 



Crataegus Bushii Sarg. A small tree occasionally found in thickets 

 and open woods in the valley. 



Crataegus bractcata Sarg. This species, of the Pruinosae group, was 

 collected and observed in several places on top of Rich Mountain. 



Crataegus spathulata Michx. This southern Red Haw is frequent in the 

 rocky valley and on the south slopes of Blackfork Mountain. It is of 

 small size here, rarely exceeding two or three meters in height. 



Crataegus apiifolia Michx. The Parsley-leaved Haw, also a southern 

 species of the Microcarpae group,, grows in similar situations to the last. 

 It is even more abundant than its congener on the open rocky slopes of 

 the mountains, where it is usually a low bush not more than a meter or 

 two in height. 



Crataegus yagensis Sarg. The type locality for this shrubby species 

 is, as the name indicates, near Page. It is rather abundant in the rocky 

 valley and on the lower slopes on the south side of Blackfork Mountain. 

 It is a very spiny intricately branched shrub, from one to two meters in 

 height. The flowers are large and handsome. 



Crataegus straminea Beadle. 



grow 



to the last and is about as common. Although of similar habit and belong- 

 ing to the same group, the two are quite distinct in character of fruit, 

 flowers and leaves. 



mere are perhaps two or three other species of Crataegus growing 

 here, although the genus is not abundantly represented. 



Prunus serotina Ehrh. The wild cherry is not uncommon both in the 

 valley and on the mountain sides. 



Prunus Munsoniana Wight & Hedrick. Occasionally found in thickets 

 in the valley and on top of the mountain. 



Prunus lanata (Sudworth) Mackenzie & Bush. A small tree plum of 

 the American group, with pubescent leaves, has been referred to this species, 

 although it is probably distinct from the type described from western 

 Missouri. Frequent in thickets in the valley and in open ground on top 

 of Rich Mountain. 



Prunus mexicana Wats. This is here a small tree growing in similar 

 situations to the last species, which it somewhat resembles. The leaves, 

 however, of this southwestern species are generally larger and more rugosely 

 veined than in any other American plum. 



