Flora of Denver. 9 



53- Erodium cicutarium L'HER. (ALFILARIA.) Recently 

 introduced around Denver. 



54. Oxalis corniculata L. var. stricta SAV. (YELLOW Ox- 

 ALIS.) Along the Platte and Cherry Creek near Berkeley. 

 Summer. 



VITACE^. (Vine Family.) 



55. vftis riparia MICHX. (WiLD GRAPE.) Along the 

 Platte. 



56. Ampelopsis quinquefolia MICHX. (WOODBINE.) Flow- 

 ers small and green, fruit purple, leaflets five. Cherry Creek, 

 along the Platte. 



SAPINDACE^:. (Maple Family.) 



57. Negundo aceroides MCENCH. (Box-ELDER.) Along 

 the Platte and Cherry Creek. 



ANACARDIACE^E. (Sumach Family.) 



58. Rhus Toxicodendron L. (PoisoN-IvY OR POISON-OAK.) 

 The form near Denver does not climb. Leaflets three. Along 

 the Platte and Cherry Creek, sometimes along the ditches. 



59. Rhus Canadensis MARSH var.trilobata GRAY. A strong 

 scented shrub, flowers numerous, small and greenish *y el low, 

 red fruit covered with a pleasantly acid coating. 



LEGUMINOS^. (Pulse Family.) 



60. Thermopsis rhombifolia NUTT. Pods spreading, 

 curved downwards. Cherry Creek along the Platte. Spring. 



61. Thermopsis montana NUTT. This has been reported. 



