﻿380 
  Williams: 
  Calyiviperaceae 
  of 
  North 
  America 
  

  

  extending 
  from 
  base 
  to 
  apex, 
  or 
  sometimes 
  nearly 
  or 
  quite 
  disap- 
  

   pearing 
  in 
  the 
  upper 
  one 
  fourth 
  of 
  leaf, 
  the 
  border 
  mostly 
  with 
  

   small, 
  irregular 
  often 
  geminate 
  teeth 
  to 
  near 
  the 
  base; 
  costa 
  per- 
  

   current, 
  50-12$ 
  /x 
  wide 
  and 
  about 
  one 
  seventh 
  the 
  width 
  of 
  leaf 
  

   one 
  half 
  up 
  from 
  base, 
  slightly 
  serrulate 
  on 
  back 
  in 
  upper 
  part 
  

   and 
  papillose 
  on 
  upper 
  side 
  from 
  near 
  cancellinae 
  half 
  Way 
  or 
  more 
  

   to 
  apex, 
  in 
  cross-section 
  showing 
  about 
  seven 
  guide-cells 
  with 
  

   stereid 
  bands 
  above 
  and 
  below 
  and 
  outer 
  cells 
  mostly 
  differentiated 
  

   on 
  upper 
  side; 
  cells 
  throughout 
  upper 
  part 
  of 
  leaf 
  rather 
  indistinct, 
  

  

  ^7 
  

  

  usually 
  2-4 
  minute 
  

  

  papillae 
  on 
  either 
  surface; 
  cancellinae 
  broad, 
  not 
  entirely 
  filling 
  

   the 
  basal 
  part 
  of 
  leaf, 
  terminating 
  above 
  in 
  mostly 
  acute 
  angles; 
  

   older 
  stem-leaves 
  often 
  with 
  numerous, 
  slender, 
  cylindrical 
  pro- 
  

  

  200 
  

  

  from 
  cells 
  of 
  blade 
  near 
  either 
  side 
  of 
  costa 
  a 
  little 
  above 
  the 
  can- 
  

   cellinae 
  on 
  the 
  upper 
  surface 
  of 
  leaf 
  and 
  extending 
  half 
  way 
  or 
  

   more 
  to 
  the 
  apex. 
  [Fig. 
  14.] 
  

  

  Type 
  collected 
  in 
  Jamaica, 
  growing 
  on 
  bamboo 
  joints, 
  Wood- 
  

   stock, 
  Westmoreland 
  Hills, 
  September, 
  1907, 
  E. 
  G. 
  Britton 
  57Q 
  

   (herbarum 
  of 
  the 
  New 
  York 
  Botanical 
  Garden) 
  . 
  

  

  Distribution: 
  known 
  only 
  from 
  the 
  type 
  locality 
  and 
  Sierra 
  

   Nipe, 
  Cuba. 
  

  

  Thi 
  

  

  IS 
  

  

  flexifoUus 
  Mitt 
  

  

  smaller, 
  more 
  obscure, 
  less 
  elongate, 
  and 
  densely 
  papillose— 
  not 
  

   smooth 
  or 
  nearly 
  so, 
  as 
  in 
  5. 
  flexifoUus. 
  

  

  15. 
  Syrrhopodon 
  ELONGATUS 
  SulL 
  Proc. 
  Am. 
  Acad. 
  5: 
  280. 
  

  

  1861 
  

  

  Evidently 
  dioicous, 
  male 
  flowers 
  not 
  found: 
  in 
  tall, 
  compact, 
  

   pale 
  green 
  to 
  brown 
  tufts 
  with 
  erect 
  stems 
  up 
  to 
  12 
  cm. 
  high, 
  often 
  

   bearing 
  at 
  the 
  apex 
  two 
  to 
  four 
  short, 
  fruiting 
  branches 
  with 
  

   spreading-flexuous 
  to 
  somewhat 
  squarrose 
  leaves 
  from 
  a 
  conspi- 
  

   cuous, 
  imbricate, 
  whitish 
  base 
  and 
  abundant 
  tomentum 
  on 
  both 
  

   stems 
  and 
  leaves; 
  leaves 
  of 
  stem 
  and 
  branches, 
  from 
  an 
  oblong 
  

   base 
  about 
  2 
  mm. 
  long, 
  somewhat 
  spiny-dentate 
  above, 
  narrowed 
  

   to 
  a 
  recurved, 
  grooved, 
  twisted 
  and 
  flexuous 
  or 
  nearly 
  straight 
  

   point 
  about 
  3 
  mm. 
  long, 
  spiny-dentate 
  above 
  and 
  slightly 
  serrulate 
  

   on 
  the 
  pale, 
  cylindric 
  border 
  below 
  to 
  the 
  enlarged 
  base; 
  costa 
  

   excurrent 
  into 
  a 
  thorn-point, 
  about 
  50 
  /x 
  wide 
  near 
  the 
  middle, 
  

   smooth 
  on 
  mner 
  face, 
  spiny-dentate 
  about 
  one 
  half 
  down 
  on 
  the 
  

   back, 
  in 
  cross-section 
  showing 
  four 
  guide-cells, 
  stereid 
  bands 
  

   above 
  and 
  below, 
  with 
  outer 
  cells 
  not 
  differentiated; 
  cells 
  through- 
  

   out 
  upper 
  part 
  of 
  leaf 
  distinct, 
  roundish 
  or 
  slightly 
  elongate, 
  

  

  