44 BOTANY OF THE ROUTE. 



Aealia nudicaulis, Linn. 



CoRNDS SERiCEA, Linn. ; Fort Clark, Neb. 



CoRNUS STOLONiFERA, Mlchx. ; Fort Clark, "Kinnickinnick." 



Symphoricarpus occidentalis, R. Br. 



Symphoricarpus vulgaris, Michx. 



Galium aparine, Linn. 



Galium trifidum, Linn. 



Galium triflorum. Michx. 



Galium boreale, Linn. 



LiATRis punctata. Hook. 



EUPATORIUM PERFOLIATUM, Linn. 



Kuhnia eupatorioides, Linn.; broad-leaved variety. 



Aster sericeus, Vent. 



Aster multiflorus, Ait. 



Erigeron pumilum," Nutt. 



Erigeron c^spitosum, Nutt.; var. radiis flavidis. This is exactly Nuttall's Erigeron cce&pito- 

 sum, or its var. grandiforum, except that the rays are light yellow in the dried specimens; so 

 decidedly so that one can hardly suppose them to have been pure white when living; yet this 

 is possibly the case. 



Erigeron Philadelphicum, Linn. 



Erigeron Canadense, Linn. 



Solidago rigida, Linn. 



Solidago incana, Torr. & Gray. 



Solidago Missouriensis, Nutt. 



Solidago gigantea, Ait. 



Aplopappus spinulosus, DC. 



Aplopappus lanceolatus, Torr. <fe Gra3'. 



Grindelia squarrosa, Duval. 



Chrysopsis villosa, Nutt. 



Silphium laciniatum, Linn. 



SiLPHIUM PERFOLIATUM, Linn. 

 EUPHROSYNE XANTHIFOLIA, Gray. 

 IVA AXILLARIS, Pursh. 



Ambrosia coronopifolia, Torr. & Gray. 

 Ambrosia trifida, Linn., and var. integrifolia. 

 Xanthium echinatum, Murr. 

 IIeliopsis l^vis, var. scabra, Torr. & Gray. 

 Echinacea purpurea, Mcench. 

 Echinacea angustifolia, DC. 



Lepachys columnaris, Torr. & Gray, and varieties. 



Helianthus petiolaris, Nutt. A diminutive state of this species, common in the collection, 

 is perhaps the H. puinihs of Nuttall. 

 Helianthus rigidus, Desp. 

 Helianthus maximiliani, Schroeder. 



