Rydberg: Phytogeographical note 



319 



Muhlenbergia filiformis 

 Juncus Mertensianus 

 Crunocallis Chamissonis 

 Parnassia fimbriata 



Agrostis depressa^ 

 Cardamine cordifolia 

 Cardamine infausta] 

 Radicula alpina 

 Micranthes rhomboidea 



Western 



Micranthes arguta 

 Androsace filiformis 

 Mimidus Langsdorfii 



Endemic 



Micranthes arnoglossa 

 Oxypolis Fendleri\ 

 Primula incana 

 Pleurogyne fontana 

 Mimidus puberulus 



D. SANDY RIVER BANKS 



The flora of the sandy river banks and sand-flats along the 

 water courses is very meager. Besides some of the species which 

 are enumerated below, under the heading "Sand-draws," there 

 are found the following which require more moisture: — - 



Eleocharis acicularis 

 Scirpus pauciflorns 

 Muhlenbergia Wolfii] 

 Sagina saginoides 

 Alsinopsis macrantha\ 

 Myosurus aristidatus 

 Ranunculus reptans 

 Halerpestes Cymbalaria 

 Radicula alpina 



Tillaeastrum aquaticum* 

 Gilia calcarea\ 

 A ndrosace filiformis 

 Androsace diffusa] 

 A ndrosace subulifera\ 

 Mimidus moschatus 

 Mimidus puberulus 

 Limosella aquatica* 

 Erigeron minor 



Subularia aquatica* 



E. ALLUVIAL RIVER BANKS 

 The formations on the alluvial river banks and river flats are 

 of three kinds. Along the smaller brooks, especially in the upper 

 portion of the zone, they resemble much those of the Subalpine 

 Zone, the most important plants being species of Mertensia, 

 Epilobium and Juncoides. In the lower part of the zone Urtica 

 gracilis and various composites constitute the greater part of the 

 vegetation. At middle altitudes species of Delphinium and Aco- 

 nitum often take their places. Very few of the plants are trans- 

 continental or eastern. 



* Growing mostly in shallow water with sandy bottom. 



