Flora of Denver. 31 



244. Campanula rotundifolia L. The common hair-bell, 

 with erect buds and nodding capsules. Along the Platte. 

 Summer. 



245. Campanula aparinoides PURSH. Flower buds droop- 

 ing, capsule erect; corolla smaller and more deeply cleft than 

 the preceding. Along the Platte. I found this several years 

 ago near Smith's Bridge, but have not seen it since- 



PRIMULACE^E. 



246. Steironema ciliatum RAF. Branching; yellow flow- 

 ers solitary in the axils on long pedicels, nodding. Summer. 



247. Glaux maritima L. Stems many from the root, 

 which has running root-stalks; leaves somewhat fleshy, flowers 

 small, pink, sessile in the axils of the numerous leaves. Along 

 the Platte near the Twenty-third Street viaduct in a low, damp 

 place. Spring. 



APOCYNACE.E. (Dog-Bane Family.) 



248. Apocynum androsaemifolium L. Diffusely branched 

 above, drooping clusters of small bell-shaped pink flowers near 

 the ends of the branches. Rather rare. Berkeley, near Clear 

 Creek. 



249. Apocynum cannabinum L. Tall and erect, branch- 

 ing near the top; small white flowers in a close cyme. Com- 

 mon in wet places along the Platte, and sometimes along the 

 ditches. Perrin's Meadow, in North Denver. 



ASCLEPIADACE^E. (Silk- Weed Family.) 



250. Asclepias speciosa TORE. (MILKWEED.) Tall and 

 simple-stemmed, leaves large and leathery, short petioled; 

 flowers large, pink and purple; pods large, erect on deflexed 

 pedicels, covered with soft prickle-like processes. Common. 

 Summer. 



