186 
¢Prunus cerasus L., sour cherry, p. 
86 
P. hortulana L. Bailey, wild goose plum, hortulan plum, p. 860 
+P. mahaleb L., perfumed cherry, p. 861 
P. mexicana S. Watson, big tree plum, wild plum [M: incl. P. 
americana var. lanata Sudw.] (Shinners, 1956b), p. 858 
P. munsoniana Wight & Hedr., wild goose plum, p. 860 
+P. persica (L.) Batsch, peach, p. 861 
. persica 
P. serotina Ehrh., black cherry, wild cherry, rum cherry, p. 862 
s rotina 
Sp. se 
+P. spinosa L., blackthorn, sloe, p. 858 
P. virginiana L., choke cherry, p. 862 
var. virginiana 
f. deamii G. Jones (note that G: Suggests that this forma 
may not be distinct from f. virginiana; the situation 
requires further study) 
f. virginiana 
YRUS, pear 
(see also ARONIA, MALUS) 
*Pyrus communis L., pear, p. 798 
ROSA, rose 
Rosa arkansana Porter, prairie wild rose, p. 855 
var. suffulta (E. Greene) Cockerell [M: R. suffulta E. Greene] 
(the validity of this taxon, often recognized as a 
Separate species, has not been studied critically) 
R. blanda Aiton, smooth wild rose, meadow rose, p. 855 
blanda 
*R. canina L. 
» dog rose, dog briar, p. 851 
var. canina 
var. dumetorum Baker (note that this taxon is often elevated to 
i 
» Var. grandiflora (Baker) Rehder, var. 
villosa (Bes ; M: incl. var. villosa (Best) 
Rehder] (Lewis, 1957), p. 852 
S: Steyermark @: Great Plains Flora M: Mohlenbrock 
mae ali os 
