354 Bulletin No. 205 [March, 



Sporobolus heterolepis Gray 

 Northern Dropseed (Fig. 162) 



Lapham '57, 545, 563 (Plato 1, Fig. 6) ; Babcock '73, 96; Patterson '76, 49; 

 Flagg '78, 280; Brendel '87, 63; Higley and Eaddin '91, 142; Huett '97, 129; 

 Gleason '10, 148; Gates '12, 355. 



Culms 1 to 3 feet tall, smooth, erect ; sheaths smooth ; blades long 

 and narrow, rough on the upper surface ; panicles 3 to 10 inches long, 

 the branches often spreading, but sometimes erect ; spikelets 4 to 6 mm. 

 long, the first glume very much shorter and narrower than the long- 

 pointed second glume. 



This species is very distinct and hence is not likely to be mistaken 



for any other. It is found in dry soil. On the original prairies of the 



state it was abundant. 



ILLINOIS SPECIMENS: Without locality, M. S. Bebb in 1859 and 1868; with- 

 out locality, Vasey ; without locality. Mead; without locality. Hall in 1875. 

 CHAMPAIGN CO. Urlaana, Clinton, Aug., 1895; Champaign, Clinton, Oct., 1895. 

 COOK CO. Englewood, Hill, Sept., 1875. du page co. Hinsdale, Smith, Sept., 

 1902. FULTON CO. Canton, Wolf; Canton, McDonald, Aug., 1889. jo daviess 

 CO. Warren, Pepoon 596. hancock co. Augusta, Mead in 1845. Henderson 

 CO. Oquawka, PrVitt, Oct., 1872. kankakee go. Altorf, Hill 199 in 1872. lake 

 CO. Beach Area, Gates 3223. mchenry co. Union, Seymour, Sept., 1881 ; Ring- 

 wood, Vasey. peoria co. Without locality, Brendel; near Princeville, V. H. Chase 

 819; Peoria, McDonald, Sept., 1900. wababh co. Mt. Carmel, Schneck, Oct., 

 1876; Old Palmyra, Schneck, Sept., 1904. will co. Joliet, Hill 195 in 1907. 

 WINNEBAGO CO. Fountaindale, M. S. Bebb in 1868. 



Sporobolus neg-lectus Nash 

 Small Rush Grass (Fig. 163) 



Culms smooth, 6 to 24 inches tall, forming small bunches; sheaths 

 inflated, broader than the blades, smooth ; blades slightly longer than 

 the sheaths, about 2 mm. wide, rough on the upper surface, usually 

 pubescent near the base, usually involute when dry ; panicles 1 to 2.5 

 inches long, all except the terminal panicles completely inclosed in 

 the inflated sheaths; spikelets 2.5 to 3 mm. long, glumes, lemma, and 

 palea all of the same texture, all white and shining. 



This species has been confused with S. vaginaeflorus, which it resem- 

 bles in general habit of growth and in the size and shape of the pan- 

 icles which are inclosed in the inflated upper sheaths. ;S^. neglectus is 

 usually a smaller plant and is distinguishable by its smooth, white 

 spikelets, those in S. vaginaeflorus having pubescent lemmas and not 

 white, shiny spikelets as in S. neglectus. 



ILLINOIS SPECIMEN^: Without locality, M. S. Bebb; without locality, Wolf; 

 without locality, Vasey; Lake Zurich, Hill, Sept., 1898; Otto, De -ScZm, Sept., 1913. 

 CHAMPAIGN CO. Urbana, Waite, Sept., 1888; IJrbana, Seymour, Oct., 1880; St. 

 Joseph, Clinton, Oct., 1895. cook co. Chicago, Babcock, Oct., 1874; Evanston, 

 Shipman, Oct., 1875. DU page co. Naperville, Umbach, Aug., 1898. fulTon co. 

 Without locality, Pepoon; Canton, Brendel. hancock co. Augusta, Mead. Hen- 

 derson CO. Oquawka, Patterson. lake co. - Lake Zurich, Hill, Sept., 1898. 

 MENARD CO. Without locality. Hall in 1861 and 1864; Athens, Hall in 1864. 



