161 [ 237 I 



CLASS II.— ENDOGENS, OR M0N0C0TYLED0N0U3 PLANTS. 

 IRIDACE.*:. 



Sisyrinchiiim a?iceps, (Linn.) Moist prairies, Upper Missouri and Devil's 

 lake ; July 22— fr. S. Qimcronatnm is mixed with this plant ; but it 

 seems to differ only in the longer mucronate opatha. 



ORCHIDACE^. 



Peristylus bracteaius, (Lindl.) Habenaria bracteaia, (K. Br.) Prairie 



groves near Council Bluffs; April 18. 

 Spiranthes ceniua, (Rich.) Boggy, elevated prairies of the Upper St. 



Peter's ; August 20. 

 Spiranthes ccniua, var. latifoHa, (Torr.) Hills of Embarras river, Upper 



Mississippi ; September. 

 Cypripediiua pubescens, (VVilld.) I'rairies, Upper Missouri ; May 20. 

 Cypripedium candiduni, (Muhl.) Prairie copses, Upper Missouri ; May 



30. Whole plant only 6 — 10 inches high. 



MELANTHACE^. 



Ammianthium Nuttallii, (Gray.) Arid, argillaceous hills of the Washtey 



or Shaven river, Missouri ; June 19— fr. 

 Zigadenus glaums, (Nutt.) Grassy ravines and low places in prairies, 



Shayen oju river, and Upper St. Peter's; July 17. 



LILIACE.E. 



Co7ivallaria stellala, (Linn.) Woody ravines, Upper Missouri ; April 29. 

 Uvularia grandiflora, (Sm.) Fertile woods, bunks of the Missouri ; 



May 7. 

 Allium stellatum, (Gavvl., Bot. Mag.) Moist situations in the prairies of 



the Upper St. Peter's ; August 2. 

 Allium aiigulosum, (Pursh.) Hills, Upper Missouri : May 19. 

 Erythronium albidum, (Nutt.) Rocky woods, Upper Missouri ; April 6. 



TRILLIACE.E. 



Trillium sessile, (Willd.) Rocky woods, Upper Missouri ; April 30. 



SMILACE.E. 



Smilax herbacea, (Linn.) aS. lasiotieuron, (Hook., FI. Bor. Amer., 2. p. 

 173, t. 187, A.) Low, fertile woods, Council Bluffs; May 4. Only 

 staminate plants are in the collection. 



Smilax roiundifoUa, (Linn. ?)— " Horse briar." On the Missouri ; com- 

 mon ; May 18. This differs from the ordinary S. rotundifolia of the 

 Northern States, in the longer and more slender priclfcles, terate 

 branches, &c. The latter has quadrangular branches, and is, doubt- 

 less, iS. quadrangularis. — (Willd.) 

 11 



