Primus 



ROSACEAE 



581 



Map 1187 

 Prunus hortulana Bailey 



Map 1189 

 Prunus virginiana L 



appear early in April, making it the most ornamental species of the genus 

 in this area. It suckers from the roots but not freely. 

 N. B. to Mass., westw. through n. Ind. to Minn. 



6. Prunus hortulana Bailey. Hortulan Plum. Map 1187. The speci- 

 mens which I refer to this species are from the southwestern part of the 

 state. My specimens were collected mostly along roadsides. In Sullivan 

 County it is a common tree on the wooded terrace of the bank of the 

 Wabash River. This species is said not to sucker and if this is true, I have 

 wrongly determined a few specimens and they should be referred to 

 Pi'unus Munsoniana Bailey which has not been reported from Indiana. I 

 think this plum has been introduced into Indiana. 



Cent. Ky. to Iowa and Kans., southw. to Tenn. and Okla. 



7. Prunus pennsylvanica L. f. Pin Cherry. Map 1188. This species 

 is local and in this state is restricted to the northwestern counties where 

 it is found in wet woodland, senescent tamarack bogs, interdunal swamps, 

 and rarely on dry, sandy soil in the dune area. Reports for this species 

 in Indiana outside the area shown on the map should, no doubt, be referred 

 to some other species. 



Lab. to B. C, southw. to Pa., Iowa, and in the mts., to N. C. and Colo. 



8. Prunus virginiana L. (Padus nana (DuRoi) Roem. of Britton and 

 Brown, Illus. Flora, ed. 2.) Common Chokecherry. Map 1189. Local to 

 frequent in the lake area where it grows mostly in moist, alluvial soil in 

 woodland, along streams and fences, and on the borders of interdunal 

 swamps along Lake Michigan. Local in southern Indiana. 



Newf. to S. Dak., southw. to Fla., Kans., and Tex. 



8a. Prunus virginiana var. demissa (Nutt.) Torr. The variety is fre- 

 quent on the crests of the high dunes facing Lake Michigan and on the 

 crests of the low dunes along Lake Michigan west of Gary. Here it re- 

 places the species. I have not found it except near the lake. I found a 

 plant about 2 inches in diameter in a tamarack bog in the Pokagon 



