22 



UNIVERSITY OF MISSOURI STUDIES 



[170 



zone of gulches and canons is alone to be found the exact 

 analogue of the Carolinian flora. The following are the im- 

 portant species: 



Filix fragilis 

 Phragmites Phragmites 

 Carex festiva 

 Allium Nuttallii 

 A. Geyeri 

 A. reticulatum 

 Vagnera stellata 

 Nemexia lasioneuron 

 Limnorchis viridiflora 

 L. laxiflora 



Oreobatus deliciosus 

 Potentilla Pennsylvanica 



strigosa 

 Geum scopulorum 

 Rosa Sayi 



Amelanchier oreophila 

 Crataegus Coloradensis 

 C. occidentalis 

 C. erythropoda 

 C. Doddsii 



Corallorrhiza Corallorrhiza C. Coloradoides 



Populus Sargentii 



P. acuminata 



P. angustifolia 



Corylus rostrata 



Parietaria Pennsylvanica 



P. obtusa 



Humulus lupulus Neo- 



Mexicanus 

 Cerastium occidentale 

 Ranunculus abortivus 

 Thalictrum purpurascens 

 Sedum stenopetalum 

 Heuchera parvi folia 

 Ribes pumilum 

 R. longi folium 

 Opulaster intermedius 

 O. Ramaleyi 



Prunus Americana 



P. Pennsylvanica 



P. melanocarpa 



Thermopsis divaricarpa 



Amorpha fruticosa 



Vicia oregana 



V. producta 



Apios Apios Boulderensis 



Geranium Parryi 



Toxicodendron Rydbergii 



Acer glabrum 



Rulac Negundo 



R. Texanum 



Vitis vulpina 



Pesedera vitacea 



Calceolaria linearis 



Circaea alpina 



