352 



Bulletin No. 205 



[March 



1898. HENDERSON CO. Oquawka, Patterson, macoupin co. Carlinville, Bohert 

 son, Sept., 1882, menard CO. Without locality, Hall in 1861. peoria co. Peo 

 ria, McDonald, Sept., 1900 and 1901; Peoria, Brendel; Princeville, V. H. Chase 

 1180. ST. CLAIR CO. Without locality, Brendel; Mascoutah, Welsch. stark co 

 V. H. Chase 820. wabash co. Hanging Eock, Schneclc, Sept., 1878, will co, 

 Joliet, Sheds, Sept., 1904. 



'155 156 II 157 "^^ T1158 159 1160 161 162 163 164 



Figs. 155-164. — 155, S. asper, spikelet; 156, S. asperifolhts, spikelet; 157, 

 S. canovircns, spikelet; 158, S. clandestinus, spikelet; 159, S. cryptandnts, spike- 

 let; 160, S, drwmmondii, inflorescence; 161, S. drummondu, spikelet; 162, S. 

 heterolepis, spikelet; 163, »S'. neglcctus, spikelet; 164, S. vagina eflorus, spikelet 



Sporobolus asperifolius (Nees & Meycn) Thurb. 

 Rough-leaved Dropseed (Fig. 156) 



C'lilms 6 to 18 inches tall, smooth, erect from a long rootstock ; 

 sheaths short, smooth ; blades flat, short, and pointed, very ]iumerous 

 near the base of the plant, 1 to 3 inches long, 2 to 3 mm. wide, very 

 rough on the upper surface, smooth beneath ; panicle spreading, 3 to 7 

 inches long and about half as wide, the spikelets 1.5 mm. long, on long, 

 capillary pedicels, rarely 2- or 3-flowered. 



This is a western species and has been reported only once fi-oin Illi- 

 nois. It is found in dry soil. 



KANE CO. Elgin, along railway track, Sherff, Aug., 1912, 



Sporobolus canovirens Nash 



(Fig. 157) 



Culms 1 to 3 feet tall, smooth ; sheaths smooth ; blades narrow and 

 involute except at base, 4 to 18 inches long, 2 to 4 mm, wide, with long 

 hairs at the base ; panicle 2 to 4 inches long, less than half an inch 

 wide, partially included in the upper sheath ; spikelets about 6 mm, 

 long, lemma, and palea slightly pubescent at base. 



This species is found in sandy soil. In general appearance it 



resembles both S. clandestinus and 8. asper. 



ILLINOIS SPECIMENS: Without locality, Wolf in 1882. fulton co. Canton, 

 Wolf. rfENDERSON CO. Oquawka, Patterson. 



