46 



GROSSULACEiE. 



68. Ribes aureum Pursh. Occurs sparingly along the streams 

 everywhere, from the Missouri to the Musselshell; most abundant in 

 the valley of the Musselshell. 



69. Ribes rotundifolium Michx. Abundant in the valley 

 of the Musselshell, and occurs sparingly along the streams elsewhere. 



70. [Ribes hirtellum Michx.] Dry rocky places, head of 

 Heart River to the Musselshell. 



CUCURBITACEiE. 



71. [Echinocystis lobata T. and G.] Near Fort Rice, June 

 20th. 



SAXIFRAGACE^3. 



72. Heuchera hispida Pursh. Near Fort Rice, June 20th. 



UMBELIFER.E. 



73. Sanicula Marylandica Linn. Shell Point, Yellowstone 

 River, July 16th. 



74. Peucedanum nudicaule Nutt. Fort Rice, June 1 5th. 



75. Musenium divaricatum Nutt. Crossing of the Big 

 Muddy, June 30th. 



76. Sium angustifolium Linn. Yellowstone River, near 

 Shell Point, July 25th. 



CORNACE^. 



77. Cornus stolonifera Michx. Fort Rice, June 15th. 



CAPRIFOLIACE2E. 



78. Symphoricarpus occidentalis R. Br. Abundant near 

 all the streams, and in the moist ravines everywhere. 



RUBIACE^E. 



79. Galium, boreale Linn. Near Fort Rice, June 22d. Com- 

 mon in the bottom-lands of the Musselshell and other streams. 



COMPOSITE. 



80. Liatris punctata Hook. Yellowstone, fifteen miles below 

 the Bio- Horn River, August 11. A common species over a wide area. 



81. Aster oblongifolius Nutt. Near Pompey's Pillar, Au- 

 gust 13th. 



