344 



Bulletin No. 205 



[March, 



137 



144 



146 



135 "136 138 141 



Figs. 135-14.5. — 135, M. mexicana, inflorescence; 136, M. capillaris, spikelet; 

 137, M. (nispidata, spikelet; 138, M. folwsa, spikelet; 139, M. glabriflora, spike- 

 let; 140, M. mexicana, spikelet; 141, M. so^hoUfera, spikelet; 142, M. raccmosa; 

 143, M. schrehcri, spikelet; 144, M. temiiflora, spikelet; 145, M. umhrosa, spikelet 



Muhlenbergia mexicana (L.) Trin. 

 Meadow Muhlenbergia. Mexican Drop-seed (Figs. 135 and 140) 



Agrostis lateriflora, Miehaux '03, 53. Muhlenbergia mexicana, Lapham '57, 

 545, 566; Babcock '73, 97; Patterson '76, 49; Flagg '78, 280; Brendel '87, 63; 

 Higley and Kaddin '91, 141; Huett '97, 129. 



Culms 2 to 4 feet long, often branching at the base, lying on the 

 ground and rooting at the lower nodes, the remainder erect, always 

 smooth ; blades rough to the touch, 2 to 6 inches long, 2 to 6 mm. wide ; 

 panicles numerous, usually narrowed toward the tip, often partially 

 inclosed in the upper sheath; spikelets 2.5 to 3 mm. long; glumes awn- 

 pointed or with a short awn, about as long as the lemma. 



This species is common in fields, gardens, and in waste places. It 



is a troublesome weed in some places. It is recommended that the areas 



containing this weed be thoroly cultivated and the rootstocks exposed 



to the sun. 



ILLINOIS SPECIMENS: Without locality, Brendel in 1873; without locality, 

 Mead; without locality, Vasey. champaign co. Urbana, Gates, Oct., 1907; Ur- 

 bana, Gibbs, Sept., 1898; Champaign, Mosher, Sept., 1914; Urbana, Moshcr, Sept., 

 1914. COOK CO. Wolf lake. Hill, Sept., 1892. fulton co. Without locality, Pe- 

 poon; Canton, Wolf, jo daviess co. Bluffs of Apple river, Pepoon. kankakee 

 CO. Kankakee, Crampton, Sept., 1913. peoria co. Peoria, Brendel; Peoria, 

 McDonald, Sept., 1900. ST. clair co. Mascoutah, Welsch. sangamon co. 

 Springfield, M. S. Bebb in 1861. stark co. Wady Petra, V. H. Chase, Aug., 

 1893. will co. Joliet, Skeels, Sept., 1904. wabash co. Without locality, 

 HchnecTc, Sept., 1880; Mt. Carmel, Schnech, Sept., 1897. 



