i5° 



UNIVERSITY OF COLORADO STUDIES 



textbook, 1 he publishes a figure illustrating the zonation at the lower 

 end of Lake Moraine in the Pike's Peak district. The present intensive 

 study of Redrock Lake does not duplicate the work of any previous 

 writers. 



List of Species Collected from the Different Zones 



Plants of Lake Zone 

 Sparganium angustifolium Batrachiam flaccidum 



Potamogeton alpinus 

 Zannichellia palustris 



Agrostis tenuiculmis 



Deschampsia caespitosa 



Hierochloe odorata 



Poa reflexa 



Carex canescens 



Carex saxatilis 



Carex siccata 

 *Carex utriculata 



Carex varicifilis 



Eleocharis tenuis 



Juncus balticus 



Listera nephrophylla 



Polygonum viviparum 

 *Caltha leptosepala 



Ranunculus reptans 

 *Sedum rhodanthum 

 * Abundant and conspicuous species. 



*Nymphaea polysepala 



Plants of Sedge Zone 



*Saxifraga hirculis 

 Potentilla propinqua 

 Viola bell idi folia 



*Dodecatheon pauciflorum 

 Anthopogon barbellatus 

 Chondrophylla americana 

 Dasystephana romanzovii 

 Amarella monantha 

 Pleurogyne fontana 

 Swertia palustris 



*Elephantella groenlandica 

 Pedicularis scopulorum 

 Achillaea lanulosa 

 Crepis perplexa 

 Taraxacum montanum 



Equisetum arvense 



Picea engelmanni (a few scattered 

 specimens) 



Phleum alpinum 



Streptopus amplexifolius 



Corallorrhiza ochroleuca 

 *Salix bebbiana 

 *Salix chlorophylla 

 *Salix glaucops 

 *Salix lutea 

 *Betula glandulosa 

 *Arenaria sajanensis 



Atragene occidental is 

 *Caltha leptosepala 

 * Abundant and conspicuous species. 

 1 Clements, Plan! Physiology and Ecology, p. 205, New York 



Plants of Shrub Zone 



Epilobium alpinum 

 Conioselinum scopuloru m 

 Heracleum lanatum 

 Moneses uniflora 

 Pyrola secunda 

 Anthopogon elegans 

 Dasystephana parryi 

 Polemonium pulcherrimum 

 Castilleja confusa 

 Castilleja sulphurea 

 ^Pedicularis racemosa 

 Pedicularis grayi 

 Pentstemon procerus 

 Veronica wortnskjoldii 



