58 GRASSES OF IOWA. 



DISTRIBUTION. 



Ioiva. Ames (Zmunt, Hitchcock, C. A. Wilson, Beardslee, Fair- 

 field, Ketterer, Kaufman, Reynolds, 163 Ball, Rich and Gossard) ; Mt. 

 Pleasant, 1002 (Witte) ; Decatur County, Van Buren County (Fitz- 

 patrick) ; Belknap, 820 (Rankin) ; Glenwood, 996 (Jackson) ; De- 

 corah, 3188 (Jacohson) ; Lansing, 3160, 3042 Steamhoat Rock (Miss 

 King) ; Manchester, 713 (Ball) ; Chariton, 1000 (Mallory) ; Mt. Ayr, 

 637 (Beard) ; Amana, 700 (Schadt) ; Dixon, 726 (Snyder) ; Creston, 

 794 (Bettenga) ; Montrose, 805 (Osborn) ; Waukon, 813 (Beeman) ; 

 Des Moines, Ledges (Boone County), Clinton, Ames, Council Bluffs, 

 Des Moines, 650, 1456 De Witt (Pammel) ; Dysart (Miss Sirrine) ; 

 Marshalltown (Stewart); Keokuk (Rolfs); Boone (Carver); Van 

 Cleve (Warden) ; Cedar Rapids (Miss Hall) ; LeClaire (Rolfs) ; Arm- 

 strong 1050 (Cratty) ; Hamilton to Hancock County (Preston). 



North America. From New England, New Jersey (Milltown, 

 Halsted, 98), Connecticut (Glastonbury, Francis Wilson, 1247), Mary- 

 land (Crisfield, Holm), North Carolina (Dun's Mt., Small), Ken- 

 tucky (Harlan County, Kearney), Ohio (Pickerington, Horr), south to 

 Florida, west to Teaxs (Calvert, Pammel), and Mexico; Rocky Moun- 

 tain region, Kansas, Nebraska, the Dakotas, Minnesota, Iowa, Wis- 

 consin (LaCrosse, Pammel), Illinois (Indian Lake, Pammel), Mis- 

 souri (St. Louis, Pammel), (St. Louis, Eggert), (Jefferson Barracks, 

 Pammel), Colorado (Denver, Pammel, Johnson and Lummis, 899). 



General. British Islands, across the continent, in temperate and 

 subtropical countries. 



7. PANICUM CAPILLARE. 



Panicum capillareh. Sp. PI. 58. 1753. Watson and Coulter in Gray. 

 Man.ofBot. 630. 1890. (6 ed.) . Scribner. Grasses of Tenn. Bull. Univ. 

 Tenn. Agr. Exp. Sta. 7: 43. /. 37. 1894. Bull. U. S. Dept. Agr. Div. 

 Agros. 17: 54 1.350. 1896. Scribner and Merrill. Rhodora 3: 105. Vasey. 

 Contr. U. S. Nat. Herb. 3: 33. Beal. Grasses of N. A. 2: 129. 1896. 

 Nash in Britton and Brown. 111. PI. 1: 123. /. 274. 1896. 



DESCRIPTION. 



Old Witch Grass, Tumble Grass. An annual with usually 

 coarse, brandling stems, I to 3 feet (2-6 dm.) long, with very hairy 

 leaf-sheaths and capillary, widely spreading panicles, terminal on the 

 culm or its branches. Culm geniculate and branching near the base, 

 rarely simple, generally pilose or pubescent below the bearded nodes. 

 Sheaths pilose to densely hirsute, with spreading hairs; ligule very short, 

 densely ciliate; leaf-blade flat, lanceolate or linear, acute, usually thinly 

 hair}- on both sides, margins scabrous and ciliate near the base. The 



