26 Flora of Denver. 



2c8. Bahia oppositifolia NUTT. Stems low, with many erect 

 branches white-pubescent, rays few and small, heads small. 

 This forms patches in damp, alkali spots. North Denver. 

 Valverde. Summer. 



209. Bahia chrysanthemoides GRAY. Compound leaves 

 clustered near the root, more scattered and much smaller along 

 the stem, which is diffusely branched above. Rays yellow, 

 spreading. The head has the appearance of a yellow broad- 

 rayed dais} r . Rare along the Platte. Late summer. 



210. Hymenopappus filifolius HOOK. White-woolly, 

 leaves pinnately twice parted into narrow divisions, heads ray- 

 less, numerous on the slender almost leafless stems. Valverde 

 Hills. Summer. 



211. Chaenactis Douglasii HOOK. & ARN. Leaves scattered 

 near the root, twice parted into thick blunt divisions, white 

 cottony heads in a diffuse cyme, rayless, akenes with chaffy 

 fringed scales. Valverde Hills. Summer. 



212. Helenium autumnale L. (SXEEZE-WEED.) Steins 

 tall, leafy, simple below, winged; heads cymosely arranged, 

 disk yellow and globular, rays small 3-lobed, yellow, reflexed. 

 Along the Platte near Valverde. Fall. Not common. 



213. Dysodia chrysanthemoi'des LAG. (FETID-MARI- 

 GOLD.) Low, diffuse with ascending branches, whole plant 

 dotted with brown glands which are largest on the rays. Pap- 

 pus purple-tipped, heads numerous on short branchlets, odor 

 very strong and unpleasant. Along the ditches. Common. 

 Fall. 



214. Hymenatherum aureum GRAY. Low, much branched, 

 leaves alternate, pinnately parted into blunt filiform divisions, 

 rays yellow, pappus of fringed scales. Odor not unpleasant 

 A few plants used to grow in the vacant lots on Stout Street be- 

 tween Twenty-third and Twenty-fourth Streets. Summer. 



