Flora of the . lllegany Stale Park Region 93 



Rosa Bushii Rydb. 



Peters run, Alexander, Aug. 10, 1926. Miss 

 Erlanson says of this specimen: "resembles 

 R. Ihishii, probably differs genotypically, sterility 

 manifestly indicates hybridity." 

 Rosa palustris Marsh. Marsh Rose 



In wet marshes. Infrequent. In this region 

 found only in an open marsh on the south edge of 

 Randolph village, hut doubtless to be looked for 

 elsewhere. 

 Prunus americana Marsh. Wild Plum 



In moist or dry alluvial soil along the Allegheny 

 river where it forms in some places, large and 

 particularly dense thickets. 

 Prunus pennsylvanica L. f. Pin, Pigeon, or Wild Red 

 Cherry 

 Common in open woods and recent clearings, 

 especially in the poorer soils of the upper portions 

 of the park area, but frequent in more fertile soils 

 of the lower slopes, and even in the swampy woods 

 of the Allegheny valley. 

 Prunus virginiana L. Choke Cherry 



On rocky or gravelly hanks and slopes, chiefly 

 abundant along the lower and larger valleys, but 

 occasionally in open places throughout the park. 

 Prunus serotina Ehrh. Wild Black Cherry 



A common forest tree in nearly all sections of 

 the park, but seemingly preferring the fertile slopes. 

 The older trees have been mostly lumbered, but an 

 abundance of young trees indicates that this species 

 will eventually regain its important position in the 

 mature forest. 



