231] FLORA OF COLUMBIA AND VICINITY 89 



and connecting the species closely with P. Columbianum 

 Scribn. 



New York to Florida and Texas. 



58. P. Porterianum Nash [P. latifolium Walt.: P. Walteri 

 Poir.]. 



Moist thickets and margins of ponds, where shaded: some 

 specimens connect closely with the next species. 

 Maine and Michigan to Florida and Texas. 



59. P. pubifolium Nash. 



Oak woods along Grindstone creek. 

 New York to Mississippi and Missouri. 



60. P. clandestinum L. 



Common in low thickets and on stream banks: some plants 

 with almost glabrous sheaths, only the upper being sparing- 

 ly papillose-hispid, might perhaps be referred to P. macro- 

 carpiim Le Conte, and still other forms connect with P. Por- 

 ter ia?ium Nash. 



Quebec to Georgia and Texas. 



27. SETARIA Beauv. ICHAETOCHLOA Scx\hn.: 

 IXOPHORUS Schlecht.: CHAMAERAPHIS 

 R. Br.]. Foxtail. 



61. S. glauca (L.) Beauv. \^Chaetochloa glanca{l^.)Scr\hn.: 

 Ixophortis glaucus {\^.) Nash: Chamaeraphis glauca (L.) 

 Kuntze]. Yellow foxtail. 



Very common in cultivated and waste grounds. 

 Europe, thence to all but arctic lands. 



62. S. viridis (L.) Beauv. \Chaetochloa viridis (L.) Scribn.: 

 /. viridis (L.) Nash: Chamaeraphis viridis (h.) Porter]. 

 Green foxtail. 



Common in cultivated and waste lands. 

 Europe, thence to all but arctic lands. 



63. S. Italica(L.) Beauv. {^Chaeiockloa Iialica(L.)Scr\hn.: 

 I. Italicus (I..) Nash: Chatnaeraphis Italica (L.) Kuntze]. 

 Italian millet. 



Escaped into waste places from cultivation. 

 East Indies, thence to most other lands. 



