﻿438 
  JOURNAIv 
  OF 
  THE 
  WASHINGTON 
  ACADEMY 
  OF 
  SCIENCES 
  VOL. 
  12, 
  NO. 
  19 
  

  

  type 
  specimens, 
  disappears 
  at 
  a 
  very 
  early 
  stage, 
  upon 
  the 
  ripening 
  of 
  the 
  

   sporangia. 
  Only 
  the 
  merest 
  trace 
  is 
  discernible 
  in 
  the 
  other 
  specimens. 
  

   Cyathea 
  producta 
  Maxon, 
  sp. 
  nov. 
  

  

  Caudex 
  erect, 
  4 
  to 
  6 
  meters 
  high; 
  fronds 
  apparently 
  ample; 
  stipe 
  75 
  cm. 
  

   long, 
  olivaceous 
  from 
  a 
  brown 
  densely 
  scurfy 
  base, 
  aculeate 
  throughout, 
  the 
  

   spines 
  numerous, 
  1 
  to 
  2 
  mm. 
  long, 
  conical, 
  straight 
  or 
  antrorsely 
  curved; 
  

   basal 
  part 
  of 
  stipe 
  persistently 
  paleaceous, 
  the 
  scales 
  densely 
  imbricate, 
  

   2 
  to 
  3.5 
  cm. 
  long, 
  acicular-caudate 
  from 
  a 
  lanceolate 
  base, 
  atropurpureous, 
  

   highly 
  lustrous, 
  with 
  narrow 
  yellowish 
  brown, 
  scarious, 
  subentire 
  borders; 
  

   blade 
  at 
  least 
  1 
  meter 
  broad, 
  subtripinnate 
  ; 
  rachis 
  and 
  middle 
  pinnae 
  want- 
  

   ing; 
  basal 
  pinnae 
  oblong, 
  43 
  cm. 
  long, 
  18 
  cm. 
  broad, 
  abruptly 
  short-acumi- 
  

   nate, 
  long-petiolate 
  (3 
  cm.) 
  , 
  the 
  secondary 
  rachis 
  dull 
  olivaceous, 
  closely 
  yellow- 
  

   ish-strigose 
  above, 
  beneath 
  laxly 
  and 
  sparsely 
  yellowish-hirsutulous, 
  muri- 
  

   cate 
  toward 
  the 
  base; 
  pinnules 
  about 
  17 
  pairs, 
  slightly 
  apart, 
  sessile 
  or 
  nearly 
  

   so, 
  9 
  to 
  11 
  cm. 
  long, 
  14 
  to 
  18 
  mm. 
  broad, 
  linear-oblong, 
  in 
  the 
  apical 
  third 
  

   abruptly 
  acuminate 
  and 
  conspicuously 
  attenuate-caudate 
  (the 
  attenuate 
  

   tip 
  2.5 
  to 
  3.5 
  cm. 
  long), 
  pinnatifid 
  to 
  about 
  1 
  mm. 
  from 
  the 
  costa, 
  thecosta 
  

   yellowish-strigose 
  above, 
  beneath 
  laxly 
  glandular-puberulous 
  and 
  deciduously 
  

   paleaceous, 
  the 
  scales 
  membranous, 
  yellowish 
  brown, 
  broadly 
  ovate, 
  hair- 
  

   pointed, 
  subbuUate, 
  caducous; 
  segments 
  14 
  to 
  16 
  pairs, 
  oblong, 
  rounded- 
  

   obtuse, 
  broadly 
  connected 
  by 
  their 
  strongly 
  dilatate 
  bases, 
  7 
  to 
  10 
  mm. 
  

   long, 
  3.5 
  mm. 
  broad 
  at 
  their 
  middle, 
  5 
  mm. 
  broad 
  at 
  base, 
  spreading, 
  falcate, 
  

   membrano-herbaceous, 
  glabrous 
  above 
  except 
  for 
  1 
  to 
  3 
  stiff 
  spinous 
  hairs 
  

   near 
  the 
  apex, 
  thinly 
  hirsute 
  beneath 
  along 
  and 
  between 
  the 
  veins 
  to 
  the 
  

   freely 
  long-ciliate, 
  broadly 
  crenate, 
  slightly 
  recurved 
  margin; 
  costules 
  minutely 
  

   paleaceous 
  beneath, 
  the 
  scales 
  like 
  those 
  of 
  the 
  costae; 
  veins 
  8 
  or 
  9 
  pairs, 
  

   acutely 
  once 
  forked 
  near 
  the 
  base; 
  sori 
  5 
  to 
  7 
  pairs, 
  borne 
  against 
  the 
  costa; 
  

   indusia 
  globose, 
  transparent, 
  membranous, 
  rupturing 
  irregularly; 
  receptacle 
  

   large, 
  dark, 
  depressed; 
  paraphyses 
  numerous, 
  short, 
  griseous-hyaline. 
  

  

  Type 
  in 
  the 
  U. 
  S. 
  National 
  Herbarium, 
  no. 
  1,049,972, 
  collected 
  along 
  

   a 
  small 
  stream 
  near 
  Palma 
  Mocha 
  Peak, 
  Sierra 
  Maestra, 
  Oriente, 
  Cuba, 
  

   at 
  1,300 
  meters 
  altitude, 
  July, 
  1922, 
  by 
  Brother 
  Leon 
  (no. 
  11181). 
  

  

  In 
  minute 
  characters, 
  such 
  as 
  the 
  structure 
  and 
  disposition 
  of 
  hairs 
  and 
  

   scales 
  upon 
  the 
  under 
  surface 
  of 
  the 
  blade, 
  C. 
  producta 
  is 
  most 
  nearly 
  related 
  

   to 
  C. 
  dissoluta 
  Baker, 
  a 
  rare 
  plant 
  of 
  the 
  Blue 
  Mountain 
  region 
  of 
  Jamaica, 
  

   at 
  1,500 
  to 
  1,800 
  meters 
  altitude. 
  That 
  species 
  differs 
  notably 
  in 
  having 
  

   the 
  pinnules 
  closer, 
  shorter 
  (5 
  to 
  8 
  cm. 
  long), 
  and 
  merely 
  acuminate, 
  the 
  

   segments 
  close, 
  not 
  at 
  all 
  dilatate, 
  and 
  not 
  ciliate, 
  the 
  veins 
  very 
  oblique, 
  

   partly 
  simple, 
  and 
  running 
  to 
  obliquely 
  crenate 
  marginal 
  teeth, 
  and 
  the 
  

   scales 
  of 
  the 
  costae 
  and 
  costules 
  beneath 
  highly 
  colored 
  and 
  lustrous. 
  Among 
  

   related 
  species 
  C. 
  producta 
  is 
  readily 
  distinguished 
  by 
  its 
  abruptly 
  caudate 
  

   pinnules 
  alone. 
  

  

  Cyathea 
  pubescens 
  Mett. 
  

  

  Pico 
  Turquino; 
  trunk 
  4 
  to 
  6 
  meters 
  tall 
  (11151). 
  

  

  New 
  to 
  Cuba. 
  Known 
  heretofore 
  from 
  the 
  mountains 
  of 
  Porto 
  Rico, 
  

   Hispaniola 
  and 
  Jamaica 
  (the 
  original 
  region) 
  . 
  Variable 
  and 
  perhaps 
  need- 
  

   ing 
  segregation. 
  

  

  GLEICHENIACEAE 
  

  

  Dicranopteris 
  furcata 
  (L.) 
  Underw. 
  

   Pico 
  Turquino 
  (11106). 
  

   The 
  specimens 
  are 
  referred 
  tentatively 
  to 
  this 
  species, 
  which 
  Underwood 
  

  

  