88 UNIVERSITY OF MISSOURI STUDIES [236 



Family 17. PONTEDERIACEAE Dumort. Pickerel-weed 



family. 



85. HETERANTHERA Willd. MUD PLANTAIN. 

 235. H. limosa (Sw.) Willd. LIMOSE MUD PLANTAIN. 

 Between Longmont and Loveland, 5100-5500 ft. (Ryd- 

 berg), in shallow water or mud. 



VIRGINIA to NEBRASKA and COLORADO; FLORIDA to MEXI- 

 CO, the WEST INDIES, and CENTRAL AMERICA. 



Order 12. LILIALES. 

 Family 18. MELANTHACEAE R.Br. Bunch-flower family. 



86. ANTICLEA Kunth. ZYGADENUS. 



235^/2. A. elegans (Pursh) Rydb. [Zygadenus elegans 



Pursh]. SHOWY ZYGADENUS. 

 Redrock lake, 10100 ft. (Ramaley). 

 SASKATCHEWAN to ALASKA; COLORADO to NEVADA. 



236. A. Coloradensis Rydb. COLORADO ZYGADENUS. 



In canons and subalpine meadows, locally abundant, 7000 

 (Bear Canon) -12000 ft. (Daniels, 651). 

 COLORADO and NEW MEXICO to UTAH. 



87. TOXICOSCORDION Rydb. POISON CAMASS. 



237. T. gramineum Rydb. DEATH CAMASS. 



Mesas and foothills; blossoming in June, 5800-7000 ft. 

 (Daniels, 106). 



SASKATCHEWAN to IDAHO and COLORADO. 



238. T. falcatum Rydb. FALCATE POISON CAMASS. 

 Spruce forests along Bear Canon, 6000-7500 ft. (Daniels 



759). 

 COLORADO. 



Family 19. JUNCACEAE Vent. Rush family. 



88. JUNCUS L. RUSH. 



239. J. Balticus montanus Engelm. MOUNTAIN BALTIC RUSH. 

 Along ditches and in swales and wet meadows, 5100-11000 



ft. (Daniels, 379). 



LABRADOR to WASHINGTON, COLORADO, and UTAH. 



