1^2 UNIVERSITY OF MISSOURI STUDIES [3OO 



base; upper surfaces glossy green, under surfaces paler, the 

 midrib white and shining both above and below. Flowers not 

 seen. ]\Iesa at entrance of Gregory Cafion and facing the 

 first Flat-iron, scarce; 5700-6000 ft. (Daniels, 654). A true 

 plum, having perhaps as its nearest ally P. Watsoni Sargent. 

 Specific name the diminutive of Prunus. 



596. P. Besseyi Bailey. Bessey's sand cherry. 

 One-fourth mile above Chautauqua grounds, Boulder, (Beth- 

 el). Also White Rocks (Ramaley). 



North Dakota to Kansas and Colorado. 



597. P. Pennsylvanica L. f. Wild red cherry. 



Common throughout, 5100-9500 ft. (Daniels, 327). Also 

 mountains between Sunshine and Ward and from Eldora to 

 Baltimore (Rydberg). 



Newfoundland to North Dakota; Georgia to Colorado. 



598. P. melanocarpa (A. Nels.) Rydb. [Cerasus demissa 

 melanocarpa A. Nels.] Black-fruited western -wild 

 cherry. 



Common along cafions throughout the mesas and foothills, 

 5600-8500 ft. (Daniels, 465). 



North Dakota to Alberta and British Columbia; New 

 Mexico to California. 



Family 61. FABACEAE Reichenb. Bean family. 



241. SOPHORA L. 



599. S. sericea Nutt. Silky sophora. 



Alkaline flats about Owen's lake, 5200 ft. (Daniels, 664). 

 South Dakota to Wyoming; Texas to Arizona. 



242. THERMOPSIS R. Br. 



600. T. pinetorum Greene. Pineland thermopsis. 

 Marshall, 5400 ft. (Daniels, 273). Open woodlands and hill- 

 sides, Boulder (Rydberg). 



Colorado to New Mexico. 



