1018] 



The Grasses of Illinois 



327 



LAKE CO. Waukegan, Gates 2980. mchenry co. Riugwood, Vascy. macoupin 

 CO. Cailiuville, Eobcitson, Aug., 1881. mason co. Without locality, M. S. Bebb 

 in 1861. JiEXARD CO. Without locality, Hall; Athens, HaU, Aug., 18G4. peoria CO. 

 Peoria, McDonald, Aug., 1885; Peoria, Brendel, Aug., 1852. stark CO. Wady 

 Petra, V. H. Cha^e 1929. vermilion co. Muneie, Mosher, Oct., 1915. Winne- 

 bago CO. Fountaiudale, M. S. Bebb. wabash co. Banks of Wabash river, 

 Schnccl; July, 1904. 



107 



Figs. 105-107. — 105, C. carolinianus; 106, C. carolinianus, siiikelet; 107, Z, 

 paliiairis, inflorescence 



13. ZIZANIA L. 



These annual grasses are usually found growing in the water along 

 tlie edges of ponds and streams. The plants are tall, Avith broad 

 leaves and large, open panicles. The erect, awned, pistillate spikelets 

 are borne on the ascending upper branches of the panicle, the pen- 

 dulous, staminate spikelets on the spreading lower branches. The 

 spikelets are all one-flowered. 



