20 Postelsia 
In the swampy places of the turf and along 
the edges of the pools the following species are 
frequently met with:- 
Triglochin maritima Hvydastylus brachy pus 
Eleocharis palustris Veronica anagallis-aquatica 
Sisvrinchium idahoense Mimulus langsdorfit 
Under the second division of protected 
rocky beaches, different conditions are met with. 
These beaches are generally shaded either by 
the projecting branches of adjoining trees or by 
the tilting of the strata in such a way as to ex- 
clude the direct rays of the sun. Ina few places 
there is a considerable layer of soil upon the 
rocks, while in others there is hardly any; fre- 
quently they are covered with a layer of moss. 
(Pl. 1IT.). Here are found often:m-ereaniaio- 
fusion most of the following species: 
Adiantum pedatum Sagina occidentalis 
Poly podium scoulert Ranunculus bongardit 
Poly podium jalcatum Aquilegia jormosa 
Montia siberica Tellima grandiflora 
Montia parvijolia Heuchera micrantha 
Veronica serpyllijolia 
Polypodium falcatum and Polypodium scou- 
