343] FLORA OF BOULDER, COLORADO 195 



Order 38. POLEMONIALES. 

 Family 91. CTJSCTITACEAE Dumont. Dodder family. 



349. CUSCUTA L. DODDER. 



820. C. curta Engelm. [C. Gronovii curta Engelm.] SHORT- 

 STYLED DODDER. 



On Ambrosia psilostachya DC, along Union Pacific Rail- 

 road east of Boulder, 5400 ft. (Daniels, 696). 

 COLORADO to UTAH. 



821. C. indecora Choisy. PRETTY DODDER. 



On Thermopsis pinetorum Greene. Rocky ledge at Mar- 

 shall, 5600 ft. (Daniels, 426). 



ILLINOIS to NEBRASKA and COLORADO; FLORIDA to CALIFOR- 

 NIA; TROPICAL AMERICA. 



Family 92. CONVOLVULACEAE Vent. Bindweed family. 



350. EVOLVULUS L. 



822. E. Nuttallianus R. & S. [E. argenteus Pursh]. NUT- 

 TALL'S EVOLVULUS. 



Common on the plains about Boulder, 5100-6000 ft. (Dan- 

 iels, 474). 



SOUTH DAKOTA to COLORADO ; TEXAS to ARIZONA. 



351. PHARBITIS Choisy. MORNING GLORY. 



823. P. purpurea (L.) Voight [P. hispida Choisy; Ipomoea 

 purpurea (L.) Roth]. COMMON MORNING GLORY. 



Escaped along Arapahoe Road, 5300 ft. (Daniels, 792). 

 TROPICAL AMERICA, thence to NORTH AMERICA. 



352. CONVOLVULUS L. BINDWEED. 



824. C. arvensis L. FIELD BINDWEED. 



Along streets of Boulder, 5300-5700 (Chautauqua grounds) 

 ft. (Daniels, 816). 

 EUROPE, thence to NORTH AMERICA. 



