﻿PULSE 
  FAMILY 
  139 
  

  

  1. 
  V. 
  sativa 
  L. 
  COMMON 
  VETCH. 
  Annual. 
  Stem 
  simple, 
  smooth, 
  

   reclining, 
  1-3 
  ft. 
  long. 
  Leaves 
  short-petioled 
  ; 
  leaflets 
  2-5 
  pairs, 
  

   obovate-oblong 
  to 
  linear, 
  obtuse, 
  notched 
  and 
  mucronate 
  at 
  the 
  

   apex. 
  Flowers 
  in 
  pairs, 
  nearly 
  sessile 
  in 
  the 
  axils, 
  pale 
  purple, 
  f 
  in. 
  

   or 
  less 
  in 
  length. 
  Pod 
  linear, 
  several-seeded. 
  In 
  gravelly 
  soil. 
  Intro- 
  

   duced 
  from 
  Europe. 
  

  

  2. 
  V. 
  caroliniana 
  Walt. 
  Perennial. 
  Smooth 
  or 
  nearly 
  so, 
  4-6 
  ft. 
  

   high. 
  Leaflets 
  8-24, 
  narrowly 
  oblong, 
  blunt. 
  Peduncles 
  loosely 
  flow- 
  

   ered. 
  Flowers 
  small, 
  whitish 
  or 
  tipped 
  with 
  pale 
  purple. 
  River 
  banks. 
  

  

  3. 
  V. 
  americana 
  Muhl. 
  WILD 
  VETCH, 
  BUFFALO 
  PEA. 
  Perennial. 
  

   Smooth, 
  1-3 
  ft. 
  high. 
  Leaflets 
  10-14, 
  elliptical 
  or 
  ovate-oblong, 
  

   obtuse. 
  Peduncles 
  shorter 
  than 
  the 
  leaves, 
  4-8-flowered. 
  Flowers 
  

   bluish-purple, 
  f 
  in. 
  long. 
  Common 
  N. 
  and 
  W. 
  

  

  XXII. 
  LATHYRUS 
  L. 
  

  

  Like 
  Vicia, 
  excepting 
  that 
  the 
  leaflets 
  are 
  fewer 
  and 
  the 
  

   style 
  is 
  bearded 
  on 
  the 
  side 
  toward 
  the 
  standard. 
  

  

  1. 
  L. 
  maritimus 
  Bigelow. 
  BEACH 
  PEA. 
  Perennial. 
  Stem 
  stout, 
  

   1-2 
  ft. 
  high. 
  Stipules 
  broadly 
  ovate 
  and 
  heart- 
  or 
  halberd-shaped, 
  

   nearly 
  as 
  large 
  as 
  the 
  6-12 
  leaflets, 
  of 
  which 
  the 
  lower 
  pair 
  is 
  the 
  

   largest; 
  tendrils 
  pretty 
  large. 
  Flowers 
  large, 
  blue 
  or 
  purple. 
  Sea- 
  

   shores 
  and 
  beaches 
  of 
  the 
  Great 
  Lakes. 
  

  

  2. 
  L. 
  palustris 
  L. 
  WILD 
  PEA. 
  Stem 
  frequently 
  winged, 
  slender, 
  

   and 
  climbing 
  by 
  delicate 
  tendrils 
  at 
  the 
  ends 
  of 
  the 
  leaves. 
  Stipules 
  

   narrow 
  and 
  pointed 
  ; 
  leaflets 
  4-8, 
  narrowly 
  oblong 
  to 
  linear, 
  acute. 
  

   Peduncles 
  bearing 
  2-6 
  pretty 
  large, 
  drooping, 
  blue, 
  purple, 
  and 
  white 
  

   flowers. 
  Damp 
  thickets 
  and 
  borders 
  of 
  swamps. 
  

  

  3. 
  L. 
  venosus 
  Muhl. 
  VEINY 
  VETCH. 
  Perennial. 
  Stem 
  stout, 
  

   prominently 
  angled, 
  climbing 
  or 
  reclining, 
  2-5 
  ft. 
  long. 
  Leaves 
  

   short-petioled 
  ; 
  stipules 
  large, 
  lanceolate 
  ; 
  leaflets 
  5-7 
  pairs, 
  broadly 
  

   ovate-obtuse, 
  mucronate. 
  Peduncles 
  nearly 
  as 
  long 
  as 
  the 
  leaves, 
  

   many-flowered. 
  Flowers 
  purple, 
  f 
  in. 
  long. 
  Calyx 
  teeth 
  very 
  unequal. 
  

   Pod 
  linear, 
  veined, 
  4-6-seeded. 
  Shady 
  banks 
  and 
  moist 
  prairies.* 
  

  

  4. 
  L. 
  odoratus 
  L. 
  SWEET 
  PEA. 
  Annual. 
  Stem 
  roughish-hairy, 
  

   it 
  and 
  the 
  petioles 
  winged. 
  Leaflets 
  only 
  one 
  pair, 
  oval 
  or 
  oblong. 
  

   Flowers 
  large, 
  2 
  or 
  3 
  on 
  the 
  long 
  peduncles, 
  sweet-scented, 
  white, 
  

   rose 
  color, 
  purple, 
  or 
  variegated. 
  Cultivated 
  from 
  Europe. 
  

  

  XXIII. 
  PISUM 
  L. 
  

  

  Climbing 
  or 
  prostrate 
  herbs. 
  Style 
  enlarged 
  above, 
  grooved 
  

   on 
  the 
  back, 
  with 
  soft-hairy 
  down 
  on 
  the 
  inner 
  edge. 
  Leaflets 
  

   1-3 
  pairs. 
  Flowers 
  and 
  fruit 
  much 
  like 
  those 
  of 
  Lathyrus. 
  

  

  