﻿PULSE 
  FAMILY 
  133 
  

  

  straight 
  wings. 
  Stamens 
  diadelphous 
  (9 
  and 
  1). 
  Ovary 
  and 
  

   pod 
  somewhat 
  stalked 
  above 
  the 
  calyx, 
  several-seeded. 
  

  

  1. 
  L. 
  vulgare 
  Griseb. 
  LABURNUM, 
  GOLDEN 
  CHAIN. 
  A 
  small 
  tree, 
  

   with 
  smooth, 
  greenish 
  bark. 
  Leaves 
  with 
  slender 
  petioles 
  ; 
  leaflets 
  

   oblong-ovate, 
  acute 
  at 
  the 
  base, 
  taper-pointed, 
  downy 
  beneath. 
  

   Flowers 
  showy, 
  in 
  graceful 
  racemes. 
  Cultivated 
  from 
  Europe. 
  

  

  XI. 
  CYTISUS 
  L. 
  

  

  Shrubs, 
  rarely 
  spiny. 
  Leaves 
  of 
  1-3 
  leaflets 
  or 
  none 
  ; 
  stipules 
  

   very 
  small. 
  Calyx 
  2-lipped, 
  the 
  upper 
  lip 
  slightly 
  2-toothed, 
  

   the 
  lower 
  3-toothed. 
  Keel 
  straight 
  or 
  a 
  little 
  curved, 
  blunt, 
  

   turned 
  down 
  after 
  flowering. 
  Stamens 
  with 
  their 
  filaments 
  

   all 
  united 
  ; 
  anthers 
  every 
  other 
  one 
  short 
  and 
  attached 
  by 
  its 
  

   center, 
  the 
  alternate 
  ones 
  long 
  and 
  fastened 
  by 
  their 
  bases. 
  

   Style 
  curved 
  in, 
  or, 
  after 
  the 
  flower 
  opens, 
  coiled 
  up. 
  Pod 
  

   flat, 
  long, 
  many-seeded. 
  

  

  1. 
  C. 
  canariensis 
  Dumont. 
  A 
  shrub 
  with 
  many 
  rather 
  stiff, 
  erect, 
  

   slender 
  branches. 
  Leaves 
  abundant, 
  very 
  small, 
  covered 
  with 
  soft 
  

   gray 
  hairs; 
  leaflets 
  3, 
  obovate. 
  Flowers 
  rather 
  small, 
  yellow, 
  in 
  

   somewhat 
  erect 
  racemes. 
  Cultivated 
  in 
  greenhouses. 
  From 
  the 
  

   Canary 
  Islands. 
  

  

  XII. 
  TRIFOLIUM 
  L. 
  

  

  Annual, 
  biennial, 
  or 
  perennial 
  herbs. 
  Stems 
  more 
  or 
  less 
  

   spreading. 
  Leaves 
  petioled, 
  of 
  3 
  toothed 
  or 
  serrate 
  leaflets 
  ; 
  

   stipules 
  united 
  to 
  the 
  petioles. 
  Flowers 
  white, 
  yellow, 
  or 
  red, 
  

   in 
  heads. 
  Calyx 
  5-cleft, 
  the 
  teeth 
  nearly 
  equal, 
  awl-shaped. 
  

   Petals 
  withering-persistent 
  ; 
  keel 
  shorter 
  than 
  the 
  wings. 
  Sta- 
  

   mens 
  diadelphous. 
  Pod 
  smooth, 
  1-6-seeded, 
  scarcely 
  opening.* 
  

  

  1. 
  T. 
  arvense 
  L. 
  RABBIT 
  FOOT 
  CLOVER, 
  STONE 
  CLOVER. 
  Annual, 
  

   silky-downy, 
  erect, 
  branching, 
  5-10 
  in. 
  high. 
  Leaflets 
  oblanceolate 
  or 
  

   linear, 
  minutely 
  toothed 
  above. 
  Heads 
  terminal, 
  peduncled. 
  Calyx 
  

   teeth 
  very 
  silky-hairy, 
  longer 
  than 
  the 
  whitish 
  corolla. 
  Old 
  fields, 
  rail- 
  

   road 
  embankments, 
  and 
  waste 
  ground. 
  Naturalized 
  from 
  Europe. 
  

  

  2. 
  T. 
  incarnatum 
  L. 
  CRIMSON 
  CLOVER. 
  Annual. 
  Stem 
  erect, 
  

   somewhat 
  branched, 
  downy, 
  1-2 
  ft. 
  high. 
  Lower 
  leaves 
  long-petioled, 
  

   the 
  upper 
  short-petioled; 
  leaflets 
  obovate 
  or 
  wedge-shaped, 
  toothed 
  at 
  

   the 
  apex. 
  Flowers 
  bright 
  crimson, 
  sessile, 
  in 
  terminal 
  heads 
  which 
  

   finally 
  become 
  much 
  elongated. 
  Calyx 
  silky, 
  its 
  lobes 
  long 
  and 
  

   plumose. 
  Introduced 
  from 
  Europe 
  and 
  cultivated 
  for 
  fodder. 
  

  

  