Flora of Denvw. 7 



CAPPARIDACE^E. (Caper Family.) 



35. Polanisia trachysperma T. & G. (SKUNK-WEED.) 

 Glandular flowers white with purple filaments, odor disagree- 

 able, pods upright. Platte bottom in sandy places. Summer. 



36. Cleome integrifolia T. & G. (BEE PLANT, RATTLE- 

 WEED.) Tall and branching, flowers reddish-purple or rarely 

 white, pods numerous, flattened, an inch or two long, hanging. 

 Common. Summer and fall. 



VIOLACE^E. (Violet Family.) 



37. Viola cucullata AIT. (BLUE VIOLET.) Round kidney- 

 shaped leaves from a short root-stock. In damp places along 

 the Platte and Cherry Creek. Spring. 



38. Viola delphinifoiia NUTT. (LARkspUR-LEAVED VIOLET.) 

 Flowers blue, leaves 5 to 7-parted, divisions cleft into linear 

 lobes. Clear Creek near Berkeley. 



39. Viola Canadensis L. (CANADIAN VIOLET.) Flowers 

 white and pink, stem sometimes branching diffusely. Rare 

 along the Platte near Overland Park. Spring. 



40. Viola Nuttallii PURSH. (YELLOW VIOLET, JOHNNY- 

 JUMP-UP.) Leaves lance-shaped. On the plains in early spring. 



CARYOPHYLLAlCE^E. (Pink Family.) 



41. Silene antirrhina L. (SLEEPY CATCH-FLY.) Annual 

 with viscid joints, petals small and pink, flowers opening for a 

 short time in sunshine. Capsules large. Rare along the 

 Platte. 



42. Lychnis Drummondii WATSON. Rare along the Platte. 

 Summer. 



43. Cerastium arvense L. (MOUSE EAR CHICKWEED.) 

 Flowers white with deeply indented petals, styles five, herbage 

 glandular. Clear Creek near Berkeley. 



