*493. 
*494, 
*495. 
496. 
497. 
498. 
499. 
500. 
*501. 
502. 
*503. 
*504. 
505. 
506. 
#507. 
508, 
509. 
510. 
511. 
#512. 
513. 
CHICKERING ON PLANTS OF DAKOTA AND MONTANA. 823 
Polygonum Pennsylvanicum, L. 
Polygonum tenue, Mx. 
Oxyria digyna, Campd. 
Rumex maritimus, L. 
1874, August. Saline plains, west of Frenchman’s Creek. 
Rumex salicifolius, Weinm. 
1873. July. Pembina. 
1874. June, July. Missouri River. Frenchman’s Creek. 
Rumex venosus, Pursh. 
1874. July, August. Frenchman’s Creek and westward. | 
Briogonum flavum, Nutt. 
1874. July, August. Missouri River to Rocky Mountains. 
EBriogonum umbellatum, Torr. 
1874. July. Frenchman’s Creek. 
Hriogonum crassifolium, Benth. 
ELA AGNACEA. 
Hleagnus argentea, Pursh. 
1875. August. Vicinity of Turtle Mountain, very common in 
patches. | 
Shepherdia argentea, Nutt. 
Shepherdia Canadensis, Nutt. 
SANTALACEAE. 
Comandra pallida, DC. 
1874. June, July. Missouri River. 
Comandra umbellata, Nutt. 
1873. July. Pembina. 
EUPHORBIACE Zi. 
Euphorbia glyptosperma, Engl. 
URTICACEZ. 
Humulus Lupulus, . 
1873. August, September. Turtle Mountain to Mouse River. 
Urtica gracilis, Ait. 
1873. August. Second prairie. 
1874, August. Frenchman’s Creek. 
Laportea Canadensis, Gaudich. 
1873. July. Pembina. 
Ulnus Americana, L. 
1873. June. Pembina. 
CUPULIFERZL. 
Corylus Americana, Walt. 
Quercus macrocarpa, Mx. 
1873. Pembina, common, of large size along the river. 
