108 UNIVERSITY OF MISSOURI STUDIES [256 



129. BISTORTA Tourn. BISTORT. 



349. B. bistortoides (Pursh) Small [Polygonum Bistorta ob- 

 longifolium Meisn.]. OBLONG-LEAVED BISTORT. 



Along Arapahoe Trail and above timberline on Arapahoe 

 Peak, 8600-13000 ft. (Daniels, 890). 

 MONTANA to WASHINGTON ; NEW MEXICO to CALIFORNIA. 



350. B. vivipara (L.) S. F. Gray [Polygonum viviparum L.]. 

 ALPINE BISTORT. 



Above timberline, Arapahoe Peak, 11000-12000 ft. (Daniels, 

 894). Also Eldora to Baltimore (Rydberg). Redrock lake, 

 10100 ft. (Ramaley & Robbins). 



GREENLAND to ALASKA ; NEW HAMPSHIRE to COLORADO : EU- 

 ROPE: ASIA. 



130. TINIARIA Reichenb. FALSE BUCKWHEAT. 



351. T. Convolvulus (L.) Webb. & Moq. [Polygonum Con- 

 volvulus L.]. BLACK BINDWEED. COMMON FALSE BUCK- 

 WHEAT. 



Along railroads and roads; throughout the cultivated area 

 as a weed in fields, 5100-9000 ft. (Daniels, 484). 

 EUROPE and ASIA, thence to NORTH AMERICA. 



Order 20. CHENOPODIALES. 

 Family 37. CHENOPODIACEAE Dumort. Goosefoot family. 



131. CHENOPODITTM L. GOOSEFOOT. LAMB'S QUAR- 

 TERS. PIGWEED. 



352. C. leptophyllum Nutt. NARROW-LEAVED GOOSEFOOT. 

 Common in the plains, mesas, and gullies of the foothills and 



mountains, 5100-8000 ft. (Daniels, 604). 



NEBRASKA to MONTANA; MISSOURI to ARIZONA. 



353. C. oblongifolium (S. Wats.) Rydb. [C. leptophyllum ob- 

 longifolium S. Wats.]. OBLONG-LEAVED GOOSEFOOT. 



Common in dry places on the plains and mesas, 5100-7000 

 ft. (Daniels, 994). 



NORTH DAKOTA to WYOMING ; MISSOURI and TEXAS to ARI- 

 ZONA. 



