I50 UNIVERSITY OF MISSOURI STUDIES [298 



583. R. Maximiliani Nees. Maximilian's rose. 

 Gregory Canon, 5800-6500 ft. (Daniels, 190). 

 Saskatchewan to Washington ; Colorado to Utah. 



Family 59. MALACEAE Small. Apple family. 



237. AMELANCHIER L. Shadbush. 



584. A. polycarpa Greene. Many-fruited juneberry. 

 Mountainsides from Eldora to Arapahoe Peak, where it 



occurs at timberline, 8600-11500 ft. (Daniels, 909). 

 Wyoming to Colorado. 



585. A. elliptiea A. Nels. Elliptical-leaved juneberry. 

 Sugarloaf Mountain (Ramaley). 



South Dakota to Colorado. 



586. A. alnifolia Nutt. Alder-leaved shadbush. 

 Sunshine Canon and Eldora (Ramaley). 



North Dakota to Montana; Colorado to Utah. 



587. A. oreophila A. Nels. Mountain shadbush. 



Mesas and foothills, common, 5700-8100 ft. (Daniels, 501). 

 Wyoming to Colorado. 



238. CRATAEGUS L. Hawthorn. 



588. C. occidentalis Britton [C. Colorado Ashe]. Western 

 haw. 



Banks of gulches in the mesas and lower foothills, 5700- 

 6000 ft. (Daniels, 835). 

 Colorado. 



589. C. Coloradensis A. Nels. Colorado haw. 



Banks of gulches in the mesas and lower foothills, 5700- 

 6000 ft. (Daniels. 767). A form from the entrance to Gregory 

 Canon (Daniels, 838) has the petioles not distally widened. 



North Dakota to Montana: Nebraska to Colorado. 



