150 MISSOURI BOTANICAL GARDEN. 



127. Planera aquatica Gmcl. 



Common in all the swamps of Dunklin and New 

 Madrid counties. April. 



128. Leitneria Florid ana Chapman. 



Common to the big swamps of Butler ana Dunklin 



counties. Sept. Judging from the material in the 

 Engelmann Herbarium, this is Chapman's species, but 

 our plant is much more robust, and the tree is 

 considerably larger. 



129. Ceratophyllum demersum L. 



In St. Francois River in Dunklin county. Sept. 



130. Taxodium distichum Richard. 



Throughout the swamps of Dunklin, Scott, Wayne, 

 Bollinger, Cape Girardeau, New Madrid, Stoddard 

 and Mississippi counties. April. 



131. Pogonia trianthophora (Sw.) B. S. P. 



In rich woods in Dunklin county. Sept. 



132. Smilax bona-nox L. 



Common in Dunklin county. Sept. 



133. Commelina hirtella Vahl. 



Low grounds in New Madrid county. Sept. 



134. Commelina nudiflora L. 



Sandy places in Dunklin county. Sept. 



135. Sparganium simplex androcladum Engelm. 



Along the banks of Varner River, in Dunklin county. 

 Sept. 



136. Echinodorus radicans Engelm. 



Deep swamps in Dunklin and New Madrid counties. 

 Sept. 

 137o Sagittaria graminea platyphylla Mich. 



Sandy banks of swamps in Dunklin county. Sept. 

 138. Carex grandis Bailey. 



with Echinodorus radicans, and in same 



t> 



counties. Sept. 



139. Cyperus aristatus Rottb. 



Sandy ground in Dunklin county. Sept 



140. Cyperus Baldwinii Torr. 



With the last. Sept. 



