4 Flora of Denver. 



ous and falling off readily when ripe. Growing in and near 

 water, along the ditches, etc. Spring to autumn. 



8. Ranunculus Pennsylvanicus L. (PENNSYLVANIAN 

 CROWFOOT.) Bristly-hairy, yellow petals smaller than sepals, 

 akenes in oblong heads. Growing near water, summer. 



9. Ranunculus multifidus PURSH. Stems floating, petals 

 yellow. This has been found along Clear Creek near Berke- 

 ley by Miss E. Eaton. 



10. Delphinium azureum MICHX- \ WHITE LARKSPUR.) 

 Palmately dissected leaves mostly at base of stem, flowers white 

 with ascending spurs. Common on the plains in early summer. 



11. Delphinium bicolor NUTT. (BLUE LARKSPUR.) Flow- 

 ers deep blue, roots clustered, small and fleshy and too readily 

 separating from the stem. Rare along Cherry Creek. Spring. 



12. Delphinium scopulorum GRAY. Tall, large blue flow- 

 ers numerous. Found by Miss E. Eaton near Berkeley, on 

 Clear Creek. Rare near Denver. 



PAPAVERACE.E. (Poppy Family.) 



13. Argemone platyceras LINK & OTTO. (MEXICAN 

 POPPY.) Flowers large and white, glaucous leaves smooth, ex- 

 cept for the prickles, and distinctly white veined. Common on 

 the plains. Summer and autumn. 



14. Argemone hispida GRAY. (BRISTLY POPPY.) Very 

 bristly and hairy, leaves light green but not white-veined. 

 More compact than the preceding and less common. Near 

 Petersburg and Valverde on the plains. Summer. 



FUMARIACEjE. (Fumitory Family.) 



15. Corydalis aurea WILLD. var. occidentalis GRAY. 

 (GOLDEN CORYDAL.) Racemes of odd-shaped, spurred, yellow 



