﻿^9^ 
  BOTANICAL 
  GAZETTE. 
  [ 
  AugUSt, 
  

  

  plants 
  now 
  weak 
  and 
  slender, 
  now 
  strong 
  and 
  robust 
  like 
  S. 
  

   Russowii. 
  

  

  Wood 
  cylinder 
  whitish 
  or 
  yellowish-green, 
  very 
  often 
  red, 
  

   but 
  never 
  brown. 
  

  

  _ 
  Stem 
  cortex 
  formed 
  of 
  3 
  or 
  4 
  strata 
  of 
  middling-broad, 
  

  

  thin-walled 
  cells; 
  outer 
  walls 
  poreless, 
  inner 
  walls 
  with 
  

   small 
  pores. 
  

  

  Stem 
  leaves 
  smaller 
  or 
  larger, 
  narrower 
  or 
  wider, 
  the 
  

   length 
  being, 
  at 
  most, 
  three 
  and 
  one-half 
  times 
  the 
  width 
  of 
  

   the 
  base. 
  More 
  or 
  less 
  distinctly 
  narrowed 
  from 
  the 
  base 
  

   upward, 
  often 
  with 
  the 
  edges 
  slightly 
  incurved 
  ; 
  isosceles-tri- 
  

   angular 
  to 
  triangular-linguiform, 
  with 
  a 
  truncate, 
  dentate, 
  

   mvolute-edged, 
  sometimes 
  slightly 
  prolonged 
  point 
  ; 
  the 
  

   broader 
  or 
  narrower 
  border 
  in 
  normallv 
  developed 
  plants 
  al- 
  

   ways 
  niuch 
  widened 
  downward 
  ; 
  hyaline 
  cells 
  in 
  the 
  upper 
  

   halt 
  ot 
  the 
  leaf 
  rhomboldal, 
  usually 
  divided 
  by 
  only 
  one 
  

   transverse 
  wall 
  into 
  two 
  daughter-cells, 
  and 
  on 
  the 
  same 
  

   plant 
  sometimes 
  with 
  fibrils 
  and 
  with 
  pores 
  on 
  the 
  back, 
  

   sometimes 
  with 
  neither. 
  

  

  Branch-fascicles 
  consisting 
  of 
  two 
  stouter 
  divergent 
  and 
  

   one 
  or 
  two 
  weaker 
  pendent 
  branches, 
  sometimes 
  closely 
  ap- 
  

   proximate, 
  sometimes 
  more 
  distant, 
  according 
  to 
  the 
  drier 
  or 
  

   wetter 
  stations. 
  Branches 
  long 
  or 
  short, 
  and 
  diverging 
  in 
  

   very 
  ditterent 
  directions 
  from 
  the 
  stem, 
  always 
  teretely 
  leaved. 
  

   i3ianch 
  leaves 
  longish-ovate 
  to 
  ovate-lanceolate, 
  with 
  an 
  in- 
  

   volute 
  margin 
  at 
  the 
  usually 
  round-truncate 
  and 
  dentate 
  

   apex, 
  very 
  narrowly 
  bordered, 
  generally 
  closely 
  imbricate, 
  

   more 
  rarely 
  erect-spreading, 
  neva- 
  distmctly 
  five-ranked, 
  

   never 
  secimd, 
  never 
  squarrose; 
  lustreless 
  -when 
  dry; 
  with 
  an 
  

   ^^A-\ 
  P/T^^'"^ 
  longitudinal 
  plait 
  in 
  the 
  middle 
  base, 
  

   and 
  with 
  delicate 
  plaits 
  in 
  the 
  membranes 
  of 
  the 
  hyaline 
  

   cells. 
  _ 
  i-ores 
  on 
  the 
  inner 
  surface 
  in 
  the 
  upper 
  part 
  almost 
  

   ^rllT^^^ 
  '? 
  ^^^ 
  ^PP^^' 
  ^"^ 
  ^ower 
  cell-angles, 
  small 
  and 
  

   ^1. 
  ^k"""? 
  ' 
  ''', 
  ^^"^ 
  "'^^^^^ 
  and 
  basal 
  parts 
  most 
  numerous 
  

   On 
  tli 
  . 
  ^^^' 
  ^f^^^ 
  ^°^^^ 
  and 
  weak-ringed 
  or 
  ringless. 
  

   thp 
  .'t,'"''- 
  '"'^^^'^^ 
  ''^^^h 
  ^ery 
  numerous 
  large 
  pores 
  along 
  

   P- 
  .d.?T\'''''^'' 
  ^^^"^ 
  ^«^^^ard 
  the 
  base 
  of 
  the 
  leaf 
  become 
  

   fone^r 
  7ntf 
  'f 
  ^' 
  ^""t 
  '1'°^'^ 
  ^^^"^ 
  rings 
  ; 
  these 
  rings 
  often 
  dis- 
  

   andX 
  n 
  ' 
  ^^ 
  ^' 
  'J^' 
  ^^^^ 
  «f 
  the 
  leaf 
  and 
  near 
  its 
  margins. 
  

  

  the 
  fibril^ 
  ^'^ 
  ^'^""^^^^ 
  ^" 
  ^^^ 
  '^'^^''^ 
  «^ 
  t'^^ 
  ^^''^" 
  ^'^''''" 
  

  

  iform' 
  nl?.^iy"'''\''^!^' 
  ^" 
  cross-section 
  triangular 
  to 
  trapes- 
  

   ess 
  c'o^ve't 
  ""V^^ 
  '^f 
  '^" 
  ^'^^ 
  °^ 
  th^ 
  ^^af 
  between 
  the 
  here 
  

   outersfde 
  of 
  t^^'^r'/' 
  I' 
  ''^"^ 
  "^-^^'^^^^^ 
  always 
  free, 
  on 
  the 
  

   outei 
  side 
  of 
  the 
  leaf 
  either 
  enclosed 
  or 
  partially 
  free. 
  

  

  