﻿138 
  KEY 
  AND 
  FLORA 
  

  

  1. 
  A. 
  caryocarpus 
  Ker. 
  GROUND 
  PLUM, 
  BUFFALO 
  APPLE. 
  Covered 
  

   with 
  pale, 
  close-lying 
  down. 
  Leaflets 
  narrow, 
  oblong. 
  Flowers 
  violet- 
  

   purple, 
  in 
  a 
  short, 
  narrow 
  raceme. 
  Fruit 
  looking 
  like 
  a 
  small, 
  green, 
  

   pointed 
  plum, 
  about 
  f 
  in. 
  in 
  diameter, 
  eatable. 
  N.W., 
  and 
  S. 
  to 
  

   Texas. 
  

  

  2. 
  A. 
  mexicanus 
  A. 
  DC. 
  PRAIRIE 
  APPLE. 
  Smooth 
  or 
  with 
  some 
  

   loose 
  hairs. 
  Corolla 
  cream 
  color, 
  with 
  the 
  tip 
  bluish. 
  Fruit 
  globular, 
  

   not 
  pointed, 
  eatable. 
  Prairies, 
  Illinois 
  and 
  S.W. 
  

  

  3. 
  A. 
  canadensis 
  L. 
  Erect, 
  often 
  tall 
  (1-4 
  ft. 
  high), 
  more 
  or 
  less 
  

   downy. 
  Leaflets 
  oblong, 
  21-27. 
  Flowers 
  pale 
  greenish, 
  in 
  long 
  

   spikes. 
  Pod 
  dry, 
  2-celled, 
  sessile. 
  River 
  bottoms, 
  prairies, 
  and 
  woods. 
  

  

  4. 
  A. 
  parvifloms 
  MacM. 
  Erect 
  and 
  slender, 
  finely 
  downy, 
  some- 
  

   what 
  ash-color, 
  1-2 
  ft. 
  high. 
  Leaflets 
  11-21, 
  linear, 
  obtuse, 
  distant. 
  

   Flowers 
  purple, 
  ^ 
  J 
  in. 
  long, 
  in 
  long, 
  slender 
  racemes. 
  Pods 
  sessile, 
  

   ^ 
  in. 
  or 
  less 
  in 
  length, 
  concave 
  on 
  the 
  back, 
  white-hairy, 
  becoming 
  

   smooth. 
  Prairies, 
  especially 
  N.W. 
  

  

  XX. 
  DESMODIUM 
  Desv. 
  (MEIBOMIA) 
  

  

  Perennial 
  herbs. 
  Leaves 
  pinnate, 
  with 
  stipules, 
  usually 
  

   with 
  3 
  leaflets. 
  Flowers 
  in 
  axillary 
  or 
  terminal 
  racemes, 
  or 
  

   sometimes 
  in 
  panicles, 
  usually 
  purple, 
  sometimes 
  pink 
  or 
  

   whitish. 
  Calyx 
  usually 
  somewhat 
  2-lipped. 
  Standard 
  ovate, 
  

   obovate, 
  or 
  roundish 
  ; 
  wings 
  attached 
  to 
  the 
  straight 
  or 
  nearly 
  

   straight 
  keel 
  by 
  a 
  little 
  appendage 
  projecting 
  from 
  each 
  side 
  

   of 
  the 
  keel. 
  Stamens 
  monadelphous 
  (9 
  and 
  1) 
  or 
  all 
  united 
  at 
  

   their 
  bases. 
  Pod 
  flat, 
  its 
  lower 
  margin 
  variously 
  lobed, 
  sepa- 
  

   rating 
  into 
  flat 
  segments 
  which 
  are 
  usually 
  furnished 
  with 
  

   short, 
  strong, 
  hooked 
  hairs, 
  making 
  the 
  fruit 
  a 
  troublesome 
  

   bur. 
  [A 
  large 
  and 
  rather 
  difficult 
  genus. 
  Most 
  of 
  the 
  species 
  

   can 
  only 
  be 
  distinguished 
  by 
  the 
  fruit, 
  which 
  matures 
  in 
  late 
  

   summer 
  or 
  autumn.] 
  

  

  XXI. 
  VICIA 
  L. 
  

  

  Climbing 
  or 
  spreading 
  herbs. 
  Leaves 
  odd-pinnate, 
  usually 
  

   ending 
  in 
  a 
  tendril. 
  Leaflets 
  many, 
  entire 
  or 
  toothed 
  at 
  the 
  

   tip 
  ; 
  stipules 
  half 
  arrow-shaped. 
  Flowers 
  blue, 
  purple, 
  or 
  yel- 
  

   low, 
  in 
  axillary 
  racemes. 
  Calyx 
  teeth 
  nearly 
  equal. 
  Wings 
  

   united 
  to 
  the 
  keel. 
  Stamens 
  diadelphous 
  (9 
  and 
  1) 
  ; 
  filaments 
  

   thread-shaped 
  ; 
  anthers 
  all 
  alike. 
  Style 
  bent, 
  smooth 
  or 
  downy 
  

   all 
  round 
  or 
  bearded 
  below 
  the 
  stigma; 
  ovules 
  usually 
  many. 
  

   Pod 
  flattened, 
  2-several-seeded. 
  Seeds 
  globular. 
  

  

  