44s RYDBERG: PHYTOGEOGRAPHICAL NOTES 
C. VARIOUS HYDROPHYTIC FORMATIONS ; 
These consist of bogs, brook banks, lakes, ponds, and brooks, 
In the Subalpine Zone these contain few grasses and no trees. The 
bogs may be divided into sedge bogs, willow bogs and Sphagnum 
bogs. 
I. SEDGE BOGS 
The sedge bogs resemble those of the Alpine Zone. These have 
already been described in a previous paper.* 
Common to the Southern and Northern Rockies 
Alopecurus aristulatus 
Calamagrostis Langsdorfi 
Poa reflexa 
Phleum alpinum 
Panicularia pauciflora 
Carex nigricans 
gzymnocrates 
disperma 
aurea 
brunnescens 
Reynoldsti 
nova 
‘* bella 
aquatilis 
Scirpus paucifiorus 
““ caespitosus 
Eriophorum angustifoium 
gracile 
Juncus balticus montanus 
‘“ triglumis 
castaneus 
Mertensianus 
Bistorta bistortoides 
‘“ linearifolia 
vivipara 
Alsine longifolia 
‘‘  strictiflora 
‘ec 
ma 
““é 
Alsine laeta 
‘crassifolia 
calycantha 
Thalictrum alpinus 
Ranunculus affinis 
Ranunculus eximius 
Trollius albiflorus 
Aconitum columbianum 
Radicula alpina 
Parnassia fimbriata 
Micranthes arguta 
Geum rivale 
Epilobium ovatifolium 
- Drummondit 
wyomingense 
Hippurus dulgaris 
Pyrola uliginosa 
Primula Parryt 
Anthopogon elegans 
Amarella scopulina 
Ee strictiflora 
“é 
“e 
Dasystephana Romanzovit 
Pleurogyne fontana 
Swertia scopulina 
“ congesta 
Myosotis alpestris 
Veronica americana — 
* See Bull. Torrey Club 41: 471, 472, 1914. 
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