APPENDIX. 383 



Hab. Prairies of Red river. 



11. Atheropouon oligostachyum, Nutt. Gen. I. p. 7S, 

 Found on the Missouri and northern lakes. 



Hab, Prairies of the St. Peter. 



12. l^Q-RD^vu jubatum, Nutt. Gen. I. p. 88. 

 Hab. New England. Lakes. 



13. Triticum *jjauciflorimi, L. v. Schw. 



This grass greatly resembles a Lotium, but must be ar- 

 ranged in the Genus Triticum^ on account of its two-valv- 

 ed calyx. It is allied to junceum. 



Culm about two feet high, distantly and alternately fo- 

 liose, terete, deeply striate, smooth, simple. Leaves clasp- 

 ing the culm with sheaths of their own length, viz. two or 

 three inches, linear, striate and very scabrous on the ribs 

 and margin, somewhat glaucous. Spike simple, erect; 

 spikelets mostly only two-flowered, closely adpressed in 

 a two-valved calyx. Valves equal, acute, strongly stri- 

 ate and scabrous on the ribs. Glumes on a short, thick, 

 hairy pedicell, with a short arista. 



Hab. Prairies of the St. Peter. 



14. Lechea tenuifolia, Pursh, I. p. 91. 



IV. CLASS TETRANDRIA. 



15. CoRNUs canadensis, Pursh, I. p. 108. 



This occurs on all the high mountains of the United States. 



16. CoRNUs alba, Pursh, I. p. 109. 

 C. stolonifera, Mx. 



Not rare in the northern states. 



17. VoTAMOGBTON paucijlorum, Pursh, p. 121. 



This may be the P. gramineum of Mx. but it certainly 

 is not that of Europe, which, however, is common in 

 mountain brooks in the United States. 



