80 



GRASSES OF IOWA. 



field (Stewart) ; Sioux City (Miss Wakefield) ; Colfax (Mead) ; Boone 

 (Carver); Armstrong, 1068 (Cratty) ; Muscatine 2081, Story City, 

 Marshalltown, New Albin 1925, Missouri Valley 058, Council 

 Bluffs, Carroll 1430, De Witt 1446, New Albin 932, Council Bluffs 

 1306, De Witt 1443, Ottumwa 2182 (Pammel) ; Ames ( Bessey, Sir- 

 rine, Hodson, P. H. Rolfs 178, Ball, Beardslee, Crozier) ; Woodbine 

 24 (Burgess) ; Johnson County (Miss Linder, Shimek) ; Cedar Rapids, 

 Lyon Count}- (Shimek) ; Johnson County (Hitchcock and Macbride) ; 

 Lineville (Shimek). 



North J in eric (i. Maine to Ontario, New York, Tennessee, Ari- 

 zona. Missouri (Independence, Bush-729), Nebraska (Crete, Pammel; 

 Alma, Pammel) ; Iowa. .Minnesota ( Minneapolis, Sandberg) ; Wisconsin 

 (Madison and La Crosse, Pammel); westward to Wyoming and 

 southward to Texas and Arizona. 



22. PANIC UM ATLANTICUM. 



Panicum A 1 1 anticutn 

 Nash. Bull. Torr. Bot. Club. 

 24: 346 1897. Scribner. Am. 

 Grasses. Bull. U. S. Dept. Agrl. 

 Div. Agros. 17: 76. /. 312. 1899. 

 Nash in Britton and Brown. 

 111. Fl 3: 500, /. 25. 



Panicum haemacarpon 

 A^he. Jour. E. Mitch. Sci. Soc. 

 15: 55. 1898. 



description'. 



Atlantic Panic Grass. 

 A slender, erect, much- 

 branched perennial, 1 to 2 

 feet (3-5 dm.) high, with 

 the culm sheaths, and 

 erect, linear-lanceolate leaves, 

 papillate-pilose with long, 

 white, spreading hairs. Pan- 

 icle 2 to 3{ inches (4-60 

 cm.) long. Spikelets obo- 

 vate, obtuse, about 1 line (2 

 mm.) long, the nine-nerved 

 second and third glumes 

 densely pubescent with short, 

 spreading hairs. In open 

 woods. 



distribution. 



Iowa. Jewell Junction 

 (Carver), Missouri Valley 

 (Pammel). 



North America. Maine, 

 Virginia, and west to Iowa 

 and Nebraska (Hastings, 

 Pammel), and Kansas; 



F10. 58. Pfunicum Atlanticum.—a-c, Spikelets. 

 (Div. of Agros. U. S. Dept. Agrl.) 



