﻿FEB. 
  4, 
  1922 
  PITTIER: 
  DALBERGIAS 
  of 
  MEXICO 
  57 
  

  

  calyx 
  lobes, 
  the 
  shape 
  of 
  the 
  petals, 
  the 
  number 
  of 
  stamens, 
  the 
  shape 
  and 
  

   size 
  of 
  the 
  leaves 
  and 
  leaflets, 
  etc. 
  

  

  2. 
  Dalbergia 
  tucurensis 
  Donn. 
  Smith, 
  Bot. 
  Gaz. 
  46: 
  111. 
  1908. 
  

  

  Type 
  Locality: 
  Concepcion 
  near 
  Tucuon, 
  Alta 
  Verapaz, 
  Guatemala 
  (von 
  

   Tuerckheim 
  II. 
  1712). 
  

  

  3. 
  Dalbergia 
  melanocardium 
  Pittier, 
  sp. 
  nov. 
  

  

  Medium 
  sized 
  tree; 
  branchlets 
  terete, 
  ferruginous 
  pubescent, 
  later 
  

   glabrate 
  and 
  grayish. 
  

  

  Leaves 
  7 
  to 
  11-foliolate, 
  the 
  rachis 
  terete, 
  minutely 
  pilosulous, 
  4 
  to 
  13 
  cm. 
  

   long. 
  Leaflets 
  subcoriaceous, 
  the 
  petiolules 
  sparsely 
  ferruginous-pubescent, 
  

   3 
  to 
  4 
  mm. 
  long, 
  the 
  blades 
  ovate, 
  rounded 
  or 
  subacute 
  at 
  the 
  base, 
  obtuse 
  

   and 
  subretuse 
  at 
  the 
  apex, 
  1.5 
  to 
  4.5 
  cm. 
  long, 
  1.3 
  to 
  2.5 
  cm. 
  broad, 
  dark 
  

   green 
  and 
  pilosulous 
  above, 
  paler 
  or 
  rufescent, 
  ferruginous-pubescent 
  and 
  

   reticulate 
  beneath, 
  the 
  very 
  slender 
  veins 
  prominent 
  on 
  both 
  faces. 
  

  

  Inflorescences 
  paniculate, 
  axillary 
  and 
  terminal, 
  congested, 
  shorter 
  than 
  

   the 
  leaves, 
  the 
  branched 
  rachis 
  ferruginous-pubescent. 
  Bractlets 
  small, 
  

   ovate 
  or 
  orbiculate, 
  ferruginous-pubescent. 
  Flowers 
  sessile 
  or 
  short 
  pedicel- 
  

   late, 
  about 
  4 
  mm. 
  long. 
  Calyx 
  subbilabiate, 
  broad, 
  fulvous-hairy, 
  about 
  2.5 
  

   mm. 
  long, 
  the 
  two 
  vexillar 
  lobes 
  broad 
  and 
  rounded, 
  the 
  2 
  lateral 
  ones 
  equally 
  

   long 
  and 
  obtuse, 
  but 
  narrower, 
  the 
  carinal 
  one 
  about 
  tw^ice 
  longer, 
  obtuse 
  or 
  

   bilobulate. 
  Petals 
  glabrous; 
  standard 
  suborbiculate, 
  the 
  claw 
  oblique, 
  0.8 
  

   to 
  0.9 
  mm. 
  long, 
  the 
  blade 
  subbiauriculate 
  at 
  the 
  base, 
  emarginate 
  at 
  the 
  

   apex, 
  about 
  3 
  mm. 
  long 
  and 
  broad; 
  wings 
  free 
  from 
  the 
  keel, 
  auriculate 
  on 
  

   both 
  margins 
  at 
  the 
  base, 
  obtuse 
  at 
  the 
  apex, 
  about 
  4 
  mm. 
  long 
  (including 
  

   the 
  claw) 
  and 
  1.4 
  mm. 
  broad; 
  carinal 
  petals 
  broader 
  than 
  the 
  wings, 
  ovate, 
  

   auriculate 
  on 
  the 
  vexillar 
  side, 
  obtuse, 
  about 
  3.8 
  mm. 
  long, 
  1.5 
  mm. 
  broad. 
  

   Stamens 
  9, 
  monadelphous, 
  the 
  staminal 
  tube 
  glabrous, 
  open 
  above. 
  Pistil 
  

   4.5 
  to 
  5 
  mm. 
  long, 
  the 
  ovary 
  stipitate, 
  1-ovulate, 
  ferruginous-villous, 
  the 
  

   style 
  thick, 
  arcuate, 
  glabrous, 
  the 
  stigma 
  inconspicuous. 
  

  

  Type 
  in 
  the 
  U. 
  S. 
  National 
  Herbarium, 
  no. 
  258410, 
  collected 
  at 
  Ojo 
  de 
  

   Agua, 
  Department 
  of 
  Santa 
  Rosa, 
  Guatemala, 
  altitude 
  about 
  900 
  meters. 
  

   May, 
  1892, 
  by 
  He3^de 
  and 
  Lux 
  (J. 
  D. 
  Smith 
  3295). 
  

  

  Known 
  among 
  the 
  natives 
  under 
  the 
  name 
  of 
  "Ebano," 
  and 
  distributed 
  as 
  

  

  Dalbergia 
  variabilis 
  Vogel. 
  Like 
  this 
  species 
  it 
  has 
  a 
  calyx 
  with 
  two 
  broad 
  

  

  more 
  or 
  less 
  connate 
  upper 
  lobes, 
  and 
  three 
  narrower 
  lower 
  lobes, 
  the 
  

  

  middle 
  (carinal) 
  one 
  about 
  twice 
  longer, 
  but 
  obtuse 
  or 
  retuse. 
  But 
  the 
  

  

  flowers 
  are 
  sessile, 
  shorter 
  and 
  broader, 
  there 
  are 
  9 
  stamens, 
  the 
  ovary 
  is 
  

  

  densely 
  villous-hairy 
  and 
  the 
  congested 
  inflorescence 
  is 
  not 
  cymose. 
  

  

  4. 
  Dalbergia 
  glomerata 
  Hemsl. 
  Diag. 
  PI. 
  Nov. 
  1:8. 
  1878. 
  

   Type 
  Locality: 
  Sangolica, 
  Mexico 
  (Botteri 
  1027). 
  

  

  5. 
  Dalbergia 
  congestiflora 
  Pittier, 
  sp. 
  nov. 
  

  

  Small 
  tree, 
  3 
  to 
  4 
  m. 
  high; 
  branchlets 
  terete, 
  striate, 
  sparsely 
  lenticel- 
  

   late, 
  at 
  first 
  minutely 
  grayish-pubescent. 
  

  

  Leaves 
  7 
  to 
  13-foliolate, 
  the 
  rachis 
  slender, 
  sparsely 
  pubescent, 
  4 
  to 
  11 
  cm. 
  

   long. 
  Leaflets 
  subcoriaceous, 
  the 
  petiolules 
  pilosulous, 
  2 
  to 
  3 
  mm. 
  long, 
  the 
  

   blades 
  ovate-oblong, 
  broadly 
  cuneate 
  at 
  the 
  base, 
  rounded, 
  slightly 
  emargi- 
  

   nate 
  and 
  sometimes 
  mucronulate 
  at 
  the 
  apex, 
  0.5 
  to 
  3 
  cm. 
  long, 
  0.3 
  to 
  2.3 
  

   cm. 
  broad, 
  sparsely 
  pilosulous 
  on 
  both 
  faces, 
  reticulate 
  and 
  with 
  the 
  venation 
  

   prominulous 
  above, 
  beneath 
  lineate-reticulate, 
  the 
  costa 
  and 
  veins 
  prominent. 
  

  

  