﻿454 
  

  

  Rydberg: 
  PhytogeogrAphical 
  notes 
  

  

  VII. 
  SAGEBRUSH 
  

  

  4 
  

  

  To 
  the 
  woody 
  formations 
  may 
  also 
  be 
  added 
  the 
  Sagebrush 
  

   lands. 
  These 
  are 
  more 
  characteristic 
  of 
  the 
  Submontane 
  Zone, 
  

   but 
  are 
  also 
  found 
  in 
  the 
  Montane 
  Zone 
  above 
  as 
  well 
  as 
  in 
  the 
  

   Sonoran 
  below. 
  The 
  most 
  important 
  shrub 
  is 
  Artemisia 
  tridentata, 
  

   which 
  is 
  found 
  in 
  all 
  three 
  zones. 
  So 
  also 
  is 
  A. 
  cana, 
  but 
  the 
  other 
  

   sagebrushes 
  are 
  most 
  common 
  in 
  the 
  higher 
  zones. 
  As 
  the 
  sage 
  

   lands 
  are 
  open 
  formations, 
  the 
  undergrowth 
  is 
  mostly 
  the 
  same 
  as 
  

  

  h 
  ■ 
  

  

  in 
  the 
  dry 
  valleys 
  and 
  on 
  the 
  tablelands. 
  Only 
  a 
  few 
  plants 
  rather 
  

   characteristic 
  of 
  this 
  formation 
  will 
  be 
  mentioned. 
  

  

  Chrysathammis 
  filifolius 
  

   Artemisia 
  cana 
  

   Artemisia 
  tridentata 
  

  

  I. 
  Shrubs 
  

  

  'Eriogonum 
  cernuum 
  

   Pensfemon 
  cyathophorus 
  

   Penstemon 
  xylus 
  

  

  New 
  York 
  Botanical 
  Garden 
  

  

  Artemisia 
  nova 
  

  

  A 
  rtemisia 
  tripartita 
  

  

  2. 
  Herbs 
  

  

  Penstemon 
  teucJirioides 
  

   Castilleja 
  flava 
  

  

  