﻿BUCKWHEAT 
  FAMILY 
  69 
  

  

  1. 
  A. 
  canadense 
  L. 
  WILD 
  GINGER. 
  Plant 
  soft-hairy. 
  Leaves 
  2, 
  

   large, 
  kidney-shaped, 
  on 
  long 
  petioles, 
  with 
  the 
  flower 
  borne 
  on 
  a 
  

   short 
  peduncle 
  between 
  them. 
  Flower 
  greenish 
  outside, 
  brownish- 
  

   purple 
  inside. 
  Calyx 
  lobes 
  epigynous, 
  taper-pointed, 
  widely 
  spread- 
  

   ing, 
  relaxed 
  at 
  the 
  tip. 
  Rich, 
  shady 
  woods, 
  common 
  N. 
  

  

  2. 
  A. 
  virginicum 
  L. 
  VIRGINIA 
  ASARUM. 
  Leaves 
  evergreen, 
  1-3 
  

   to 
  each 
  plant, 
  smooth, 
  mottled, 
  round-cordate, 
  entire, 
  2-3 
  in. 
  long 
  

   and 
  broad 
  ; 
  petioles 
  smooth 
  or 
  downy 
  along 
  one 
  side, 
  3-7 
  in. 
  long. 
  

   Flowers 
  nearly 
  sessile, 
  greenish 
  without, 
  dull 
  purple 
  within, 
  f-f 
  in. 
  

   long 
  ; 
  tube 
  inflated 
  below, 
  narrow 
  at 
  the 
  throat, 
  lobes 
  spreading. 
  

   Rich, 
  shady 
  woods.* 
  

  

  II. 
  ARISTOLOCHIA 
  L. 
  

  

  Erect 
  or 
  twining 
  perennial 
  herbs 
  or 
  woody 
  vines. 
  Leaves 
  

   alternate, 
  heart-shaped 
  at 
  the 
  base, 
  palmately 
  nerved, 
  petioled, 
  

   entire. 
  Flowers 
  zygomorphic, 
  solitary, 
  or 
  in 
  small 
  clusters. 
  

   Calyx 
  perigynous 
  or 
  epigynous, 
  tubular, 
  irregular. 
  Stamens 
  

   mostly 
  6, 
  sessile, 
  apparently 
  united 
  to 
  the 
  angled 
  and 
  fleshy 
  

   3-6-lobed 
  or 
  -angled 
  stigma. 
  Capsule 
  naked, 
  6-valved 
  ; 
  seeds 
  

   very 
  numerous.* 
  

  

  1. 
  A. 
  macrophylla 
  Lam. 
  DUTCHMAN'S 
  PIPE, 
  PIPE 
  VINE. 
  A 
  tall 
  

   climber. 
  Leaves 
  dark 
  green, 
  smooth, 
  round-kidney-shaped, 
  some- 
  

   times 
  1 
  ft. 
  wide. 
  Peduncles 
  1-flowered, 
  with 
  a 
  single 
  clasping 
  bract. 
  

   Calyx 
  14 
  in. 
  long, 
  bent 
  into 
  the 
  shape 
  of 
  a 
  pipe, 
  its 
  border 
  abruptly 
  

   spreading, 
  brownish-purple. 
  Rich 
  woods, 
  often 
  cultivated. 
  

  

  2. 
  A. 
  tomentosa 
  Sims. 
  DUTCHMAN'S 
  PIPE. 
  Stem 
  woody, 
  climb- 
  

   ing 
  high, 
  branches 
  and 
  leaves 
  densely 
  woolly. 
  Leaves 
  heart-shaped, 
  

   prominently 
  veined, 
  3-5 
  in. 
  long 
  and 
  broad. 
  Flowers 
  axillary, 
  mostly 
  

   solitary, 
  on 
  slender 
  peduncles. 
  Calyx 
  bent 
  in 
  the 
  shape 
  of 
  a 
  pipe, 
  

   yellowish-green 
  with 
  a 
  dark 
  purple 
  throat, 
  limb 
  unequally 
  3-lobed, 
  

   rugose, 
  reflexed. 
  Anthers 
  in 
  pairs 
  below 
  the 
  3 
  spreading 
  lobes 
  of 
  the 
  

   stigma. 
  Capsule 
  oblong. 
  Stems 
  sometimes 
  30 
  ft. 
  long. 
  Rich 
  woods 
  S.* 
  

  

  25. 
  POLYGONACE^l. 
  BUCKWHEAT 
  FAMILY 
  

  

  Herbs 
  with 
  alternate, 
  entire 
  leaves, 
  and 
  usually 
  with 
  sheathing 
  

   stipules 
  above 
  the 
  swollen 
  joints 
  of 
  the 
  stem. 
  Flowers 
  apeta- 
  

   lous, 
  generally 
  bisexual, 
  with 
  a 
  3-6-cleft 
  calyx, 
  generally 
  colored 
  

   and 
  persistent. 
  Fruit 
  a 
  compressed 
  or 
  3-angled 
  akene, 
  inclosed 
  

   in 
  the 
  calyx 
  ; 
  seeds 
  with 
  endosperm, 
  which 
  does 
  not 
  generally 
  

   inclose 
  the 
  embryo. 
  Stamens 
  4-12, 
  on 
  the 
  base 
  of 
  the 
  calyx. 
  

  

  