﻿Williams: 
  Calymperaceae 
  of 
  North 
  America 
  

  

  369 
  

  

  below 
  the 
  middle; 
  leaf-cells 
  with 
  often 
  high, 
  

   spine-like 
  papillae. 
  

  

  Leaves 
  with 
  point 
  spread 
  ing-flexuous 
  to 
  incurved 
  or 
  

  

  nearly 
  straight 
  when 
  dry 
  and. 
  from 
  two 
  

   to 
  many 
  times 
  longer 
  than 
  the 
  basal 
  part, 
  

   or 
  without 
  a 
  distinctly 
  broader 
  basal 
  part, 
  

   Costa 
  without 
  accessory 
  guide-cells; 
  stems 
  

   usually 
  much 
  longer 
  than 
  the 
  longest 
  

   leaves 
  (about 
  12 
  mm.) 
  

  

  Leaves 
  rather 
  distant 
  with 
  the 
  point 
  abruptly 
  

   spreading 
  from 
  the 
  conspicuous, 
  appressed 
  

   base; 
  costa 
  dentate 
  at 
  apex, 
  not 
  papillose 
  

   below. 
  

  

  Leaves 
  closer 
  together 
  on 
  the 
  stem 
  with 
  less 
  

   spreading 
  points; 
  costa 
  mostly 
  papillose 
  on 
  

  

  ■ 
  

  

  the 
  back 
  in 
  the 
  upper 
  part 
  as 
  well 
  as 
  den- 
  

  

  J 
  

  

  tate 
  at 
  apex. 
  

   Costa 
  with 
  accessory 
  guide-cells; 
  stems 
  much 
  

   - 
  shorter 
  than 
  the 
  longest 
  leaves 
  (stems 
  usually 
  

   5-6 
  mm. 
  long 
  and 
  leaves 
  up 
  to 
  4 
  cm. 
  long). 
  

   Margin 
  serrulate 
  to 
  enlarged 
  base, 
  or 
  base 
  with 
  more 
  

   or 
  less 
  serrate 
  or 
  spiny-dentate 
  border. 
  

   Cells 
  of 
  leaf 
  smooth. 
  

  

  Cells 
  of 
  leaf 
  either 
  mamillose 
  or 
  papillose, 
  that 
  is, 
  

   similar 
  on 
  both 
  sides. 
  

   Costa 
  about 
  25 
  ^ 
  wide 
  halfway 
  up. 
  smooth 
  

   except 
  near 
  the 
  apex. 
  

  

  Costa 
  50 
  ;i 
  wide 
  or 
  more 
  half 
  way 
  up. 
  

  

  Smooth 
  or 
  with 
  minute* 
  distant 
  teeth 
  on 
  the 
  

  

  back, 
  the 
  upper 
  face 
  papillose 
  mostly 
  from 
  

  

  just 
  above 
  the 
  cancellinae 
  half 
  way 
  to 
  

  

  apex. 
  

  

  Rough 
  with 
  prominent, 
  often 
  spine-like 
  

   teeth 
  on 
  the 
  back. 
  

  

  Costa 
  spiny-dentate 
  on 
  the 
  back 
  in 
  the 
  

  

  upper 
  half, 
  otherwise 
  smooth. 
  

   Costa 
  with 
  dense, 
  compound 
  or 
  forking 
  

   papillae 
  extending 
  to 
  below 
  the 
  can- 
  

   celinae 
  on 
  the 
  back. 
  

   Border 
  mostly 
  wanting 
  in 
  upper 
  third 
  of 
  leaf 
  or 
  in 
  some 
  

   leaves 
  scarcely 
  present 
  or 
  entirely 
  wanting 
  through- 
  

   out. 
  

   Cancellinae 
  mostly 
  broad 
  and 
  somewhat 
  rounded 
  

  

  above. 
  

   Cancellinae 
  terminating 
  above 
  in 
  narrowly 
  acute 
  angles 
  

  

  next 
  the 
  costa. 
  

   Costa 
  near 
  the 
  apex 
  of 
  cancellinae 
  6o~8o 
  ^ 
  wide 
  and 
  

   leaf-blade 
  0.6-1 
  mm. 
  or 
  more 
  wide. 
  

  

  Costa 
  near 
  apex 
  of 
  cancellinae 
  40-50 
  /i 
  wide 
  and 
  

  

  leaf-blade 
  0.25-0.50 
  mm. 
  wide. 
  

  

  8. 
  5, 
  injlexiis. 
  

  

  9. 
  5. 
  Husnoti. 
  

  

  10. 
  S^ 
  Jiavescens. 
  

  

  II. 
  S. 
  tenuifolius 
  

  

  12, 
  S. 
  lycopodioides. 
  

  

  13. 
  S. 
  recurvulus. 
  

  

  14. 
  S, 
  gramlnicola. 
  

  

  15- 
  S. 
  elongatus. 
  

  

  16. 
  S, 
  iexanus. 
  

  

  17. 
  S. 
  ligulatus, 
  

  

  18. 
  S. 
  parasiticus. 
  

  

  19. 
  5. 
  Jiligerus. 
  

  

  