﻿440 
  JOURNAL 
  OP 
  THE 
  WASHINGTON 
  ACADEMY 
  OF 
  SCIENCES 
  VOL. 
  12, 
  NO. 
  19 
  

  

  POLYPODIACEAE 
  

  

  Elaphoglossum 
  inaequalifolium 
  (Jenman) 
  C. 
  Chr. 
  

  

  Pico 
  Turquino, 
  on 
  trees 
  (11166). 
  

  

  Described 
  from 
  Jamaica 
  and 
  known 
  heretofore 
  only 
  from 
  that 
  island, 
  

   where 
  it 
  is 
  an 
  abundant 
  high-mountain 
  species. 
  

  

  Polypodium 
  gramineum 
  Swartz. 
  

  

  Palma 
  Mocha 
  Peak, 
  Sierra 
  Maestra, 
  at 
  1,400 
  meters 
  elevation 
  (11160). 
  

  

  Apparently 
  not 
  heretofore 
  reported 
  from 
  Cuba. 
  Agreeing 
  closely 
  with 
  the 
  

   present 
  specimens 
  are 
  small 
  plants 
  collected 
  on 
  or 
  near 
  Pico 
  Turquino 
  by 
  

   S. 
  H. 
  Hamilton 
  in 
  1902. 
  Both 
  collections 
  differ 
  uniformly 
  from 
  the 
  typical 
  

   Jamaican 
  plant 
  in 
  having 
  much 
  smaller 
  and 
  more 
  delicate 
  fronds, 
  the 
  stipes 
  

   being 
  more 
  slender 
  and 
  the 
  blades 
  only 
  1 
  to 
  2 
  mm. 
  broad, 
  of 
  thinner 
  sub- 
  

   stance, 
  and 
  with 
  some 
  of 
  the 
  veins 
  simple 
  to 
  the 
  marginal 
  connecting- 
  vein 
  ; 
  

   but 
  in 
  minute 
  structural 
  characters, 
  such 
  as 
  those 
  afforded 
  by 
  the 
  rhizome 
  

   scales 
  and 
  the 
  once-forked 
  glandular 
  hairs 
  of 
  the 
  leaf 
  margin, 
  the 
  agreement 
  

   is 
  too 
  close 
  to 
  justify 
  the 
  segregation 
  of 
  the 
  Cuban 
  plants 
  as 
  a 
  distinct 
  species. 
  

   The 
  extremes 
  in 
  width 
  of 
  blade 
  do 
  not, 
  however, 
  overlap. 
  In 
  Jamaica 
  P. 
  

   gramineum 
  is 
  abundant 
  in 
  the 
  Blue 
  Mountain 
  region 
  at 
  750 
  to 
  1,700 
  meters 
  

   altitude. 
  

  

  Polypodium 
  jenmani 
  Underw. 
  

  

  East 
  of 
  Palma 
  Mocha, 
  Sierra 
  Maestra, 
  at 
  1,300 
  meters 
  altitude, 
  on 
  tree 
  

   trunks 
  along 
  a 
  small 
  stream 
  (11101). 
  Loma 
  del 
  Gato 
  and 
  vicinity, 
  Cobre 
  

   Range, 
  Sierra 
  Maestra, 
  December, 
  1920, 
  Clement 
  370. 
  

  

  New 
  to 
  Cuba, 
  being 
  known 
  otherwise 
  only 
  from 
  Jamaica, 
  where 
  it 
  is 
  very 
  

   rare 
  in 
  the 
  eastern 
  part 
  of 
  the 
  island 
  at 
  500 
  to 
  900 
  meters 
  elevation 
  {Maxon 
  

   961, 
  1535; 
  Underwood 
  2606; 
  Maxon 
  & 
  Killip 
  173). 
  The 
  relationship 
  is 
  

   with 
  P. 
  flexuosum 
  Maxon, 
  of 
  Cuba, 
  which 
  it 
  resembles 
  in 
  scale 
  structure. 
  

  

  Polypodium 
  calvum 
  Maxon, 
  sp. 
  nov. 
  

  

  Plants 
  epiphytic, 
  the 
  fronds 
  numerous, 
  subfasciculate, 
  rigidly 
  ascending, 
  

   10 
  to 
  20 
  cm. 
  long. 
  Rhizome 
  oblique 
  or 
  short-creeping, 
  1 
  cm. 
  long 
  or 
  more, 
  

   3 
  or 
  4 
  mm. 
  thick, 
  coarsely 
  long-radicose 
  beneath, 
  conspicuously 
  paleaceous 
  

   above, 
  the 
  scales 
  ascending, 
  loosely 
  imbricate, 
  2.5 
  to 
  3 
  mm. 
  long, 
  0.5 
  to 
  

   0.8 
  mm. 
  broad, 
  narrowly 
  oblong-lanceolate, 
  long-attenuate, 
  attached 
  just 
  

   above 
  the 
  rounded 
  subcordate 
  base, 
  entire, 
  conspicuously 
  clathrate, 
  the 
  

   cells 
  with 
  strongly 
  sclerotic, 
  dark 
  reddish 
  brown 
  lateral 
  walls, 
  the 
  outer 
  walls 
  

   pale 
  yellowish, 
  hyaline, 
  greatly 
  depressed; 
  stipes 
  short 
  (0.5 
  to 
  1.5 
  cm. 
  long), 
  

   brown, 
  nonsetose, 
  bearing 
  a 
  few 
  short 
  branched 
  glandular 
  hairs, 
  narrowly 
  

   greenish-alate 
  ventrally, 
  the 
  wings 
  brownish 
  with 
  age; 
  blades 
  pinnatisect, 
  

   10 
  to 
  18 
  cm. 
  long, 
  1 
  to 
  1.5 
  cm. 
  broad 
  near 
  the 
  middle, 
  evenly 
  attenuate 
  in 
  

   both 
  directions, 
  the 
  apex 
  not 
  produced, 
  the 
  rachis 
  nearly 
  concealed 
  above, 
  

   beneath 
  very 
  prominent, 
  black, 
  lustrous, 
  nonsetose, 
  bearing 
  a 
  few 
  branched 
  

   glandular 
  hairs, 
  these 
  evident 
  mainly 
  in 
  the 
  sinuses; 
  pinnae 
  35 
  to 
  50 
  pairs, 
  

   contiguous 
  but 
  not 
  joined, 
  spreading, 
  the 
  middle 
  ones 
  oblong 
  or 
  slightly 
  

   triangular-oblong, 
  broadest 
  at 
  base 
  (3 
  to 
  4 
  mm.), 
  rounded-obtuse 
  or 
  rarely 
  

   acutish, 
  rigidly 
  coriaceous, 
  nearly 
  plane, 
  entire, 
  opaque, 
  pale 
  beneath, 
  the 
  

   venation 
  wholly 
  concealed; 
  lower 
  pinnae 
  gradually 
  shorter, 
  triangular, 
  the 
  

   lowermost 
  ones 
  broader 
  than 
  long, 
  short-decurrent 
  ; 
  midveins 
  of 
  pinnae 
  

   decurved 
  at 
  base, 
  subflexuous 
  ; 
  veins 
  of 
  larger 
  pinnae 
  4 
  or 
  5 
  pairs, 
  all 
  but 
  the 
  

   proximal 
  basal 
  one 
  diverging 
  at 
  about 
  45°, 
  simple, 
  ending 
  in 
  minute 
  de- 
  

   pressed-punctiform 
  hydathodes 
  remote 
  from 
  the 
  margin; 
  sori 
  3 
  or 
  4 
  pairs. 
  

  

  