112 UNIVERSITY OF MISSOURI STUDIES [260 



374. A. graecizans L. [A. albus L.]. WHITE PIGWEED. TUM- 

 BLE WEED. 



Common in waste places, especially on the plains, 5100-6000 

 ft. (Daniels, 813). 



TROPICAL AMERICA, thence throughout NORTH AMERICA. 

 141. FROEUCHIA Moench. 



375. F. gracilis Moq. SLENDER FROELICHIA. 



Along the railroad between Boulder and Marshall; also 

 along the railroad in Boulder Canon, 5400-6000 ft. (Daniels, 



47 6). 



NEBRASKA to COLORADO ; ARKANSAS to TEXAS. 

 Family 39. CORRIGIOLACEAE Reichenb. Corrigiola 

 family. 



142. PARONYCHIA Adans. WHITLOWWORT. 



376. P. pulvinata Gray. PULVINATE WHITLOWWORT. 

 Massif de T Arapahoe, 1100-13500 ft. (Rydberg). 

 WYOMING and COLORADO to UTAH. 



377. P. Jamesii T. & G. JAMES'S WHITLOW-WORT. 

 Common in open situations throughout, 5100-10000 ft. (Dan- 

 iels, 136). Also mountains between Sunshine and Ward, and 

 at Meadow Park and Lyons (Rydberg). 



NEBRASKA to WYOMING; TEXAS to NEW MEXICO and MEX- 

 ICO. 



Family 40. ALLIONIACEAE Reichenb. Umbrella-wort 



family. 



143. ABRONIA Juss. 



378. A. fragrans Nutt. FRAGRANT ABRONIA. 



Near Boulder (Tweedy). Valmont Butte, not getting to 

 Boulder (Ramaley). 

 SOUTH DAKOTA to IDAHO ; KANSAS to NEW MEXICO. 



144. ALIIONIA LoefTl. UMBRELLA-WORT. 



379. A. nyctaginea Michx. [Oxybaphus nyctagineus Sweet]. 

 HEART-LEAVED UMBRELLA-WORT. 



Plains and mesas, especially about streams, 5100-6000 ft. 

 (Daniels, 113). 

 ILLINOIS to SASKATCHEWAN ; MISSOURI to COLORADO. 



