228 ANNUAL REPORT STATE GEOLOGIST. 



LEMNACEJE. 



Lemna, L. 



minor, L.; Nuttall, Lesquereux. 

 trisulca, L.; Lesquereux. 

 Spierodela, Schleid. 



polyrrhiza (L.), Schleid. [Lemna, L.); Nuttall, Coville. 



ALISMACEJE 



Alisma, L. 



plantago, L. var. triviale (Pursh). BSP. [yar. ameri- 

 canum, Gray.) 

 Sagittaria, L. 



graminea, Michx.; Nuttall, Harvey. 

 variabilis, Engelm.; Nuttall, Harvey. The varieties 

 are not given — Coville. 

 Echinodorus, Rich. 



radicans (Nutt.), Engelm.; Nuttall, Harvey. 

 rostratus (Nutt.), Engelm.; Nuttall. 



NAIADACEJE. 



Potamogeton, L. 



amplifolius, Tuck. Power's Creek, about twelve 



miles southwest of Batesville, Coville. 

 gramineus, L.; Nuttall. 

 hybridus, Michx. Polk bayou, about half a mile from 



Batesville, Coville. 

 natans, L. 



prcelongus, Wulf.; Lesquereux. 

 zostercefolius, Schum.; Lesquereux. 



CYPERACEJE. 



Cy perns, L. 



acuminatus, Torr. & Hook. Southeastern part of the 



state, Harvey. 

 aristatns, Rottb. (C. inflexns, Muhl.) Southeastern 



part of the state, Harvey. 

 baldwinnii, Torr. Reported by Nuttall, under the 



name of Mariscus echinatns, Coville. 



