Flora of Denver. 13 



92 Oxytropis Lamberti GRAY. On the plains the crim- 

 son-flowered variety with decumbent stems prevails but 

 along the Platte in the shade, the flowers are almost white and 

 the plant is quite erect. The large white-flowered variety is 

 one of the loco weeds. 



93. Vicia Americana MUHL. (WiLD PEA.) Climbing, 

 flowers blue, small. It varies and is common along the 

 streams. 



94. Lathyrus ornatus NUTT. (WiLD PEA.) Low and 

 somewhat canescent with appressed hairs. Flowers large re- 

 sembling the next. Montclair. Early summer. 



95. Lathyrus polymorphus NUTT. With strongly veined 

 smooth leaves, more prostrate than the preceding. Common 

 along the Platte and Cherry Creek. Early summer. 



96. Apios tuberosa MOENCH. (GROUND NUT.) Climbing, 

 with brown purple flowers. Near Valverde. Autumn. 



ROSACES. (Rose Family.) 



97. Prunus Americana MARSHALL (WILD PLUM.) Along 

 the Platte and Cherry Creek, blooming in early spring. 



98. Prunus Virginiana L. (CHOKE CHERRY.) Along the 

 Platte and Cherry Creek, blooming in spring. 



99. Rubus strigosus MICHX. (Raspberry.) Reported 

 from near Denver by Dr. Smith in "Flora of Colorado." 



100. Geum strictum AIT. Leaves hairy, unevenly pin- 

 nate, stems erect, flowers yellow, styles becoming hooked. 

 Along the Platte. Rare. 



101. Fragaria Virginiana MILL. var. Illinoe'nsis GRAY. 

 (STRAWBERRY.) Along the Platte. 



102. Potentilla arguta PURSH. Stems tall and stout, flow- 



