﻿R\T)Berg: 
  Phytogeographical 
  notes 
  

  

  445 
  

  

  I. 
  Trees 
  and 
  shrubs 
  

  

  a. 
  Eastern 
  and 
  transcontinental 
  

  

  Populus 
  tremtiloides 
  

   Salix 
  Bebbiana 
  

   Betiila 
  papyrifera 
  

  

  Salix 
  Scouleriana 
  

   Ribes 
  viscosissimiim 
  

   Rubacer 
  parviflortim 
  

  

  Rosa 
  Boiirgeauiana 
  

   Distegia 
  involucrata 
  

  

  b. 
  Western 
  

  

  Rubtis 
  melanolashis 
  

   Sorbus 
  scopttlina 
  

   Vaccinium 
  scoparium 
  

  

  c. 
  Endemic 
  

  

  Salix 
  perrostrata 
  

   Edwinia 
  americanaf 
  

   Ribes 
  coloradense\ 
  

   Ribes 
  Wolfii'\ 
  

   Opulaster 
  glabratus\ 
  

   Sericotheca 
  microphylla^ 
  

  

  Rosa 
  Engelmannii 
  

   Rosa 
  melina] 
  

   Rosa 
  Woodsii 
  

  

  Sambucus 
  microbofrysf 
  

   Sambiicus 
  melanocarpa 
  

  

  2. 
  Herbs 
  

  

  a. 
  Eastern 
  and 
  transcontinental 
  

  

  Phleitm 
  alpinum 
  

   Agrostis 
  oreophila 
  

   Avena 
  striata 
  

   DantJionia 
  spicata 
  

   Poa 
  crocata 
  

  

  Bromus 
  Richardsonii 
  

   Agropyrum 
  Richardsonii 
  

  

  r 
  

  

  Vagnera 
  stellata 
  

  

  Ranunculus 
  micranthus 
  

   Fragaria 
  americana 
  

   Titim 
  alpinum 
  

  

  Viola 
  canadensis 
  

   Heracleum 
  lanatiim 
  

  

  + 
  

  

  Aralia 
  nudicaulis 
  

   Pediciilaris 
  canadensis 
  

   Galium 
  boreale 
  

  

  Erigeron 
  droebachiensis 
  

   Botrychiiim 
  simplex 
  

  

  1 
  

  

  Botrychiiim 
  jieglectum 
  

   Botrychium 
  virginianum 
  

   Botrychiiim 
  silaifolium 
  

   Polystichum 
  Lonchitis 
  

  

  b. 
  Western 
  

  

  Festuca 
  subulata 
  

   Elymus 
  glaucus 
  

   Veratrum 
  speciosum 
  

   Vagnera 
  amplexicaulis 
  

   Vagnera 
  liliacea 
  

  

  Trillium 
  ovalum 
  

   Thalictrum 
  sparsiflorum 
  

   Aquilegia 
  coerulea 
  

   Fragaria 
  bracteata 
  

   Geranium 
  viscosissimum 
  

  

  