2 66 DAVENPORT ACADEMY OF SCIENCES. 



862. C. acuminatus, Torr. 



Low sandy soil ; Noels ; near Follets. 



863. C. Schwcinitzii, Torr. 



Dry sandy soil along Cedar and Wapsipinicon Rivers. 



864. C. filiculmis, Vahl. 



With the last ; also on dry hillside at Wild Cat Den. 



865. C. erythrorhizos , Muhl. 

 River shores ; frequent. 



866. C. esculentus, L. 



Cultivated grounds ; rather frequent. 



867. C. strigosus, L. 

 Common in moist soil. 



868. C. strigosus, L., var. composites, Britton. 

 Wet grounds; infrequent. 



869. C. speciosus, Vahl. 



Usually found with C erythrorhizos, Muhl. 

 Dulichium, Pers. 



870. D. spathaceum, Pers. 



Margins of ponds ; Moscow ; Noels. 

 Eleocharis, R. Br. Spike Rush. 



871. E. atropurpurea, Kunth. 



Growing with Fimbristylis capillaris, Gray, in wet sand near 

 Fruitland. Determined by Britton. 



872. E. ovata,'R. Br. 



In mud and wet sand ; rather frequent. 



873. E. palustris, R. Br. 

 Common in low ground. 



874. E. palustris, R. Br., var. glaucescens, (Willd.) Gray. 

 Low wet ground ; Davenport, Noels. 



875. E. tenuis, Schultes. 

 Frequent. 



876. E. compressa, Sullivant. 

 Frequent in low grounds. 



S77. E. acicularis, R. Br. 



Common in wet grounds. 



