[ 174 ] 88 



PORTULACACE.«. 

 laUnum parvifxrrum, (Nutt.) Little Blue river of the Kansas. June 26 



LINACEiE. 

 Linum rigidum, (Pursh.) North fork of the Pl.itte. July 8. 

 L. perenne, (Linn.) Black hills to the Sweet Water of the Platte. August 2-3L 



GERANIACE^E. 



Geranium Fremontii, n. sp. Black hills. August 26-3 1 . 



0XALIDACEJ2. 



Oxalis stricta, (Linn. ) On the Kansas. June. 



ANACARDIACEJ3. 



Rhus trihbata, (Nutt.) Red Buttes. July 29. 



MALVACEAE. 

 Malva pedata, (Torr. and Gr.) Big Blue river of the Kansas. June 21. 

 M. involucrata, (Torr. and Gr ) Little Blue river of the Kansas. June 23. 

 Sida coccinea, (DC.) Little Blue river to the south fork of the Platte. June 22, July 4. 



VITACE.E. 

 Titis riparia, (Michx.) Grand island of the Platte. September 19. 



ACERACE^E. 

 Negundo aceroides, (Mcench.) On the lower part of the Platte. 



CELASTRACE.E. 



Oreophila myrtifolia, (Nutt.) Summit of the Wind river mountains. August 13-14, 



RHAMNACE^. 



Ceanothus velutinus, (Dougl. ) With the preceding. 



C Americanus, var. sanguineus. C. sanguineus, (Pursh.) On the Platte. 



C. mollissimus, n. sp. Near the Kansas river. June 19. 



LEGUMINOS.^. 



Lathyrus linearis, (Nutt. ) On the Platte, from its confluence with the Missouri to Fort Laramie; 



September 2-30. 

 Amphicarpoea monoica, (Torr. and Gr.) North fork of the Platte. September 4. 

 Apios tuberosa, (Mcench.) Forks of the Platte. September 13. 

 Glycyrhiza lepidota, (Pursh.) From near the Kansas river to the Black hills of the Platte. June 



21, July 25. 

 Psorulea Jloribunda, (Nutt.) Forks of the Platte. July 2. 



P. campestris, (Nutt. ?) and a more glabrous variety. With the preceding. July 2. 

 P. lanceolata, (Pursh.) Black hills of the Platte. July 24. 

 P. argophylla, (Pursh.) Little Blue river. June 23. 

 P. tenuifiora, (Pursh.) (no flowers.) Forks of the Platte. September 12. 

 Petalostemonviolaceum, (Michx.) Big Blue river of the Kansas, &c. June 21. 

 P. candidum, (Michx.) Red Buttes. July 29. 



Amorpha fruticosa, (Linn.) From the Lower Platte to the mountains. August 8, September 19. 

 A. canescens, (Nutt.) Kansas and Lower Platte rivers. June 19, September 20. 

 Lespedeza capitata, (Michx. ) Mouth of the Platte. September 30. 

 Desmodium acuminatum, (DC.) Little Blue river of the Kansas. June 22. 



