﻿290 
  PROCEEDINGS 
  OF 
  THE 
  CALIFORNIA 
  

  

  Group 
  IV. 
  — 
  Found 
  thirty 
  to 
  forty 
  miles 
  from 
  the 
  center 
  of 
  San 
  Francisco 
  

   county 
  : 
  

  

  34. 
  Quercus 
  chrysolepis, 
  Lieh. 
  Gold-scaled 
  Oak. 
  

  

  35. 
  Pinus 
  Coulteri, 
  Don. 
  Great-coned 
  Pine. 
  

  

  36. 
  Pinus 
  ponderosa, 
  Dougl. 
  Yellow 
  Pine. 
  

  

  37. 
  Pinus 
  insignis, 
  Dougl. 
  Monterey 
  Pine. 
  

  

  38. 
  Pinus 
  contorta, 
  Dougl. 
  Twisted 
  Pine. 
  

  

  39. 
  Taxus 
  brevifolia, 
  Nutt. 
  Oregon 
  Tew. 
  

  

  Only 
  one 
  is 
  a 
  broad-leaved 
  evergreen, 
  replacing 
  the 
  common 
  Live 
  Oak 
  on 
  

   some 
  of 
  the 
  drier 
  mountains. 
  Of 
  the 
  Pines, 
  the 
  first 
  is 
  confined 
  to 
  the 
  dry, 
  

   eastern 
  hills 
  ; 
  the 
  second, 
  rare, 
  if 
  found 
  at 
  all, 
  on 
  the 
  Mount 
  Hamilton 
  Range, 
  

   though 
  common 
  north 
  and 
  south, 
  at 
  forty 
  miles 
  distance. 
  The 
  tMrd, 
  is 
  only 
  

   found 
  south 
  ; 
  and 
  the 
  fourth, 
  north. 
  

  

  Group 
  V. 
  — 
  Found 
  forty 
  to 
  sixty 
  miles 
  from 
  San 
  Francisco 
  : 
  

  

  40. 
  Cupressus 
  macrocarpa, 
  Hartw, 
  Monterey 
  Cypress. 
  

  

  This 
  tree 
  barely 
  comes 
  within 
  the 
  sixty-mile 
  limit 
  to 
  the 
  north, 
  growing 
  in- 
  

   land, 
  near 
  Mt, 
  St. 
  Helena, 
  but 
  southward, 
  only 
  near 
  Monterey, 
  as 
  far 
  as 
  known 
  ; 
  

   though 
  a 
  similar 
  form 
  occurs 
  dwarfed 
  on 
  mountains 
  as 
  far 
  south 
  as 
  Anaheim, 
  

   where, 
  at 
  2,000 
  feet 
  elevation, 
  it 
  grows 
  about 
  four 
  inches 
  thick, 
  and 
  twenty 
  feet 
  

   high. 
  At 
  Cypress 
  Point 
  they 
  grow 
  four 
  feet 
  thick, 
  and 
  sixty, 
  or 
  more 
  high, 
  

   but 
  flat-topped, 
  and 
  reduced 
  in 
  height 
  by 
  the 
  winds. 
  The 
  influence 
  of 
  fogs 
  and 
  

   clouds 
  seems 
  more 
  marked 
  on 
  the 
  growth 
  of 
  this 
  tree 
  than 
  on 
  any 
  other, 
  though 
  

   affecting 
  the 
  Redwood 
  and 
  Pines 
  to 
  some 
  extent. 
  The 
  iuiiuence 
  of 
  peculiarities 
  

   of 
  climate 
  and 
  soil 
  in 
  producing 
  some 
  of 
  the 
  local 
  forms 
  of 
  this 
  genus 
  now 
  

   called 
  species, 
  will 
  probably, 
  in 
  time, 
  be 
  determined 
  by 
  their 
  cultivation 
  to- 
  

   gether. 
  A 
  form, 
  still 
  undetermined, 
  is 
  found 
  growing 
  on 
  Cedar 
  Mountain, 
  

   thirty-six 
  miles 
  cast, 
  apparently 
  most 
  like 
  C. 
  Macnabiana. 
  

  

  TREES 
  FOUND 
  OVER 
  SIXTY 
  MILES 
  TO 
  NORTH 
  AND 
  EAST. 
  

  

  Rhamnus 
  Purshianus, 
  Hkr. 
  Bearwood. 
  

  

  Acer 
  glabrum, 
  Torr. 
  Smooth 
  Maple. 
  

  

  Acer 
  circinatum, 
  Pursli.. 
  Round-leaf 
  Maple. 
  

  

  Cercis 
  occideutalis, 
  Torr. 
  Western 
  Judas 
  Tree. 
  

  

  Pyrus 
  rivularis, 
  Dougl. 
  Oregon 
  Crab-apple. 
  

  

  Quercus 
  Wislizeui, 
  Engl 
  ? 
  Wislizenus 
  Oak. 
  

  

  Quercus 
  Douglassi, 
  Hkr 
  ?=Q. 
  Garryana 
  ? 
  

  

  Pinus 
  Lambertiana, 
  Dougl. 
  Sugar 
  Pine. 
  

  

  Picea 
  grandis, 
  Dougl. 
  White 
  Fir. 
  

  

  Abies 
  Menziesii, 
  Dougl. 
  Black 
  Fir. 
  

  

  Abies 
  Mertensiana. 
  Hemlock 
  Spruce. 
  

  

  Thuja 
  gigantea, 
  Nutt. 
  Oregon 
  Cedar. 
  

  

  Cupressus 
  Lawsoniana, 
  Murray. 
  Port 
  Orford 
  Cypress. 
  

  

  Libocedrus 
  decurrens, 
  Torr. 
  California 
  Cedar. 
  

  

  