﻿120 
  KEY 
  AND 
  FLORA 
  

  

  leaflets 
  cut-serrate. 
  Flowers 
  small, 
  in 
  a 
  close, 
  leafy 
  cyme. 
  Styles 
  

   glandular-thickened 
  at 
  the 
  base. 
  In 
  dry 
  soil. 
  

  

  3. 
  P. 
  rivalis 
  Nutt.,var. 
  millegrana. 
  DIFFUSE 
  CINQUEFOIL. 
  Annual. 
  

   Steins 
  decumbent 
  or 
  ascending, 
  commonly 
  diffusely 
  branched, 
  lj-3 
  

   ft. 
  high, 
  clothed 
  with 
  long, 
  soft 
  hairs 
  or 
  nearly 
  smooth. 
  Leaves 
  all 
  

   but 
  the 
  uppermost 
  of 
  3 
  leaflets 
  and 
  petioled 
  ; 
  leaflets 
  oblong, 
  wedge- 
  

   shaped, 
  thin, 
  deeply 
  serrate. 
  Flowers 
  yellow, 
  in 
  loose, 
  leafy 
  cymes. 
  

   Style 
  somewhat 
  thickened 
  below. 
  In 
  damp 
  soil 
  W. 
  

  

  4. 
  P. 
  argentea 
  L. 
  SILVERY 
  CINQUEFOIL. 
  Steins 
  prostrate 
  or 
  

   ascending 
  and 
  branching, 
  w 
  r 
  oolly. 
  Leaflets 
  oblong, 
  wedge-shaped, 
  

   those 
  of 
  the 
  upper 
  leaves 
  very 
  narrow, 
  with 
  a 
  few 
  large, 
  deeply 
  cut 
  

   teeth, 
  smooth 
  and 
  green 
  above, 
  silvery 
  beneath, 
  with 
  a 
  dense 
  coat 
  

   of 
  white 
  wool. 
  Flowers 
  small 
  and 
  somewhat 
  clustered, 
  yellow. 
  Dry 
  

   fields 
  and 
  roadsides. 
  

  

  5. 
  P. 
  Anserina 
  L. 
  SILVKKWKED. 
  Stems 
  spreading 
  by 
  slender 
  

   runners, 
  with 
  many 
  joints, 
  silky-hairy. 
  Leaves 
  all 
  basal, 
  pinnate 
  ; 
  

   leaflets 
  7-21, 
  serrate, 
  oblanceolate 
  or 
  obovate, 
  nearly 
  smooth 
  above, 
  

   white 
  and 
  silky-downy 
  beneath. 
  Flowers 
  yellow, 
  l-l 
  in. 
  in 
  diameter. 
  

   Style 
  thread-like. 
  River 
  banks, 
  brackish 
  marshes, 
  and 
  borders 
  of 
  lakes. 
  

  

  6. 
  P. 
  canadensis 
  L. 
  COMMON 
  CIMJUKFOIL. 
  Stems 
  slender, 
  pro- 
  

   cumbent, 
  silky-hairy, 
  sending 
  out 
  long 
  runners. 
  Leaflets 
  obovate, 
  

   wedge-shaped, 
  appearing 
  like 
  5 
  from 
  the 
  divisions 
  of 
  the 
  2 
  lateral 
  

   ones. 
  Peduncles 
  1-flowered 
  in 
  the 
  axils 
  of 
  the 
  leaves. 
  Flowers 
  

   yellow. 
  Common 
  in 
  dry 
  pastures 
  and 
  a 
  troublesome 
  weed. 
  

  

  X. 
  FILIPENDULA 
  Hill. 
  (ULMARIA) 
  

  

  Tall 
  perennial 
  herbs. 
  Leaves 
  pinnately 
  divided, 
  with 
  

   stipules. 
  Flowers 
  small, 
  bisexual, 
  in 
  panicled 
  cymes. 
  Calyx 
  

   5-lobed. 
  Petals 
  5, 
  with 
  claws. 
  Stamens 
  many, 
  hypogynous, 
  

   borne 
  on 
  a 
  flat 
  or 
  slightly 
  hollowed 
  receptacle. 
  Pistils 
  5-15, 
  

   distinct. 
  Carpels 
  when 
  ripe 
  1-2-seeded, 
  looking 
  like 
  follicles 
  

   but 
  not 
  splitting 
  open. 
  

  

  1. 
  F. 
  rubra 
  Hill. 
  QUEEN 
  OF 
  THE 
  PRAIRIE. 
  Smooth, 
  branching, 
  

   2-8 
  ft. 
  high. 
  Leaves 
  very 
  large, 
  of 
  3-7 
  pinnately 
  arranged 
  leaflets, 
  

   often 
  with 
  smaller 
  ones 
  between, 
  the 
  lobes 
  cut 
  or 
  toothed 
  ; 
  terminal 
  

   leaflet 
  much 
  larger, 
  7-9-parted. 
  Flowers 
  showy, 
  pink, 
  fragrant, 
  

   about 
  J 
  in. 
  in 
  diameter. 
  Meadows 
  and 
  prairies, 
  especially 
  in 
  moist 
  

   soil, 
  sometimes 
  cultivated. 
  

  

  2. 
  F. 
  Ulmaria 
  Maxim. 
  MEADOWSWEET. 
  Stem 
  1-3 
  ft. 
  high. 
  

   Leaves 
  lyrate, 
  interruptedly 
  pinnate, 
  white-downy 
  beneath. 
  Flowers 
  

   yellowish-white, 
  small, 
  fragrant, 
  in 
  a 
  dense 
  compound 
  cyme. 
  Pods 
  

   spirally 
  twisted. 
  Cultivated 
  from 
  Europe 
  and 
  sometimes 
  escaping. 
  

  

  