258 UNIVERSITY OF MISSOURI STUDIES [4O6 



12 12. A. Leontodon Rydb. Dandelion agoseris. 

 Mountainsides at Eldora, 8600-10000 ft. (Daniels, 991). 

 South Dakota to Montana, Colorado to Arizona. 



1213. A. glauca (Nutt.) Greene [Tro.vimon glaucum Nutt.]. 

 Glaucous agoseris. 



Abundant on the plains, 5100-6000 ft. (Daniels, 20). 

 Saskatchewan to Washington ; Colorado to Utah. 



1214. A. parviflora (Nutt.) Dietr. {Troximon glaucum pan'i- 

 floriim (Nutt.) Gray]. Small-flowered agoseris. 



Frequent about Boulder, and in meadows and grassy bogs at 

 Eldora, 5100-8600 ft. (Daniels, 622). 



North Dakota to Alberta and Colorado. 



1215. A. laciniata (Nutt.) Greene [Stylosanthus laciniatus 

 Nutt.]. Cut-leaved agoseris. 



Boulder (Rydberg). 



Wyoming to Idaho ; Colorado to California. 



1216. A. humilis Rydb. Low agoseris. 



Bogs at Eldora, 8600-9000 ft. (Daniels, 633). 

 Wyoming to Colorado. 



1217. A. rostrata Rydb. Beaked agoseris. 



Abundant on the mesas and foothills, 5700-9000 ft. (Daniels, 

 232). Also mountains between Sunshine and Ward (Ryd- 

 berg). A plant was gathered in Gregory Canon, which bore 

 two heads of flowers. 



Colorado. 



484. TARAXACUM Hall. Dandelion. 



1218. T. Taraxacum (L.) Karst. [T. officinale Weber]. Com- 

 mon dandelion. 



Common in fields and along roadsides, 5100-7000 ft. (Dan- 

 iels, 261). Ward, 9200 ft. (Cockerell). 

 Europe, thence to North America. 



I2i8>^. T. montanum Nutt. Mountain dandelion. 

 Redrock lake, loioo ft. (Ramaley & Robbins). 

 Montana to Colorado. 



485. LACTUCA L. Lettuce. 



