134 UNIVERSITY OF MISSOURI STUDIES [276 



368. A. albus L. \_A. graeczzans'Bntt &Br.]. Tumbleweed. 

 Common in cultivated and waste lands. 



Tropical America, thence to North America. 



369. A. blitoides Wats. Creeping pigweed. 

 Roadsides and fields; common. 



Colorado and Utah to Mexico, thence to all but Arctic 

 North America. 



Family 34. PHYTOLACCACEAE Lindl. Pokeweed family. 



134. PHYTOLACCA L. Scoke. 



370. P. decandra L. Pokeweed. 

 Common in waste and newly cleared ground. 



Maine to Minnesota; Florida to Texas, thence to 

 Europe. 



Family 35. NYCTAGINACEAE Lindl. Four-o'clock 

 family. 



135. MIRABILIS L. lALLIONIA Loefl.: OXY- 

 BAPHUS Vahl]. Four-o'clock. 



371. M. hirsuta (Pursh) Daniels [A. hirsuta Pursh: 0. 

 hirsuta (Pursh) Choisy]. Umbrella-wort. 



Limestone ledges; rare about Columbia, but common at 

 the Pinnacles. 



Minnesota to the Northwest Territory; Michigan and 

 Missouri to Texas and Colorado. 



372. M. decumbens (Nutt.) Daniels \A. decumbem (Nutt.) 

 Rydb.]. 



Rocky ledges along Hinkson creek south; rare. 

 Mississippi to Missouri and New Mexico. 



Family 36. AIZOACEAE A. Br. Carpet-weed family. 



136. MOLLUGO L, Carpet-weed. 



373. M. verticillata L. 



Waste places and fields, especially in sandy soil. 

 Tropical America, thence to North America. 



