﻿84 
  KEY 
  AND 
  FLORA 
  

  

  2. 
  Petals 
  none, 
  or 
  very 
  small 
  and 
  stamen-like. 
  

  

  (a) 
  Sepals 
  yellow. 
  Caltha, 
  VIII 
  

  

  (b) 
  Sepals 
  greenish 
  or 
  white, 
  falling 
  as 
  the 
  flower 
  opens. 
  

  

  Thalictrum, 
  II 
  

  

  (e) 
  Sepals 
  white 
  or 
  colored, 
  involucre 
  sepal-like. 
  Hepatica, 
  I 
  V 
  

  

  (rf) 
  Sepals 
  4. 
  Plants 
  climbing. 
  Clematis, 
  VI 
  

  

  (e) 
  Sepals 
  5, 
  white. 
  Flowers 
  axillary 
  and 
  terminal. 
  Pods 
  

  

  2 
  -several 
  -seeded. 
  Isopyrum, 
  V 
  1 
  1 
  

  

  (/) 
  Sepals 
  white 
  or 
  colored. 
  Plants 
  not 
  climbing. 
  Akenes 
  more 
  

  

  or 
  less 
  tailed 
  with 
  the 
  styles 
  in 
  fruit. 
  Anemone, 
  V 
  

  

  (g) 
  Sepals 
  5-10, 
  white. 
  Flowers 
  in 
  an 
  umbel. 
  Rootr, 
  tuberous. 
  

  

  Anemonella, 
  III 
  

  

  I. 
  RANUNCULUS 
  L. 
  

  

  Annual 
  or 
  perennial 
  herbs. 
  Leaves 
  alternate, 
  usually 
  deeply 
  

   lobed 
  or 
  parted. 
  Flowers 
  axillary 
  or 
  in 
  corymbs, 
  white 
  or 
  

   yellow. 
  Sepals 
  3-5. 
  Petals 
  3-5, 
  flat, 
  with 
  a 
  small 
  pit 
  or 
  scale 
  

   inside 
  at 
  the 
  narrowed 
  base. 
  Stamens 
  usually 
  numerous. 
  

   Pistils 
  few 
  or 
  several 
  in 
  a 
  head. 
  Akenes 
  flattened, 
  pointed.* 
  

  

  1. 
  R. 
  pusillus 
  Poir. 
  Low 
  SPEARWORT. 
  Perennial. 
  Stems 
  several, 
  

   erect 
  or 
  ascending, 
  branched, 
  smooth, 
  6-15 
  in. 
  high. 
  Leaves 
  entire 
  or 
  

   slightly 
  toothed, 
  the 
  lower 
  round 
  or 
  cordate, 
  long-petioled, 
  the 
  upper 
  

   lanceolate 
  or 
  elliptical, 
  nearly 
  or 
  quite 
  sessile. 
  Flowers 
  very 
  small, 
  

   about 
  I 
  in. 
  wide, 
  yellow. 
  Petals 
  1-5, 
  as 
  long 
  as 
  the 
  sepals. 
  Stamens 
  

   3-10. 
  Akenes 
  smooth, 
  with 
  a 
  very 
  short 
  point. 
  On 
  muddy 
  banks.* 
  

  

  2. 
  R. 
  abortivus 
  L. 
  SMAI,L-FLOWF.UF.I> 
  CROWFOOT. 
  Perennial. 
  

   Stems 
  smooth, 
  branching, 
  ll'-l.S 
  in. 
  high. 
  F>asal 
  leaves 
  round-cor- 
  

   date, 
  crenate, 
  petioled. 
  Stem 
  leaves 
  3-5-parted, 
  with 
  wedge-shaped 
  

   or 
  linear 
  divisions, 
  sessile. 
  Flowers 
  very 
  small, 
  pale 
  yellow. 
  Sepals 
  

   reflexed, 
  longer 
  than 
  the 
  petals. 
  Akenes 
  in 
  a 
  globose 
  head, 
  smooth, 
  

   without 
  a 
  beak. 
  Common 
  on 
  wet. 
  ground 
  and 
  waste 
  places.* 
  

  

  3. 
  R. 
  recurvatus 
  Poir. 
  HOOKF.D 
  CROWFOOT. 
  Perennial. 
  Stem 
  

   erect, 
  hairy, 
  1-2 
  ft. 
  high. 
  Leaves 
  all 
  nearly 
  alike, 
  petioled, 
  3-5-lobed, 
  

   with 
  the 
  lobes 
  wedge-shaped, 
  cut 
  or 
  toot 
  lied 
  at 
  the 
  apex. 
  Flowers 
  

   small, 
  pale 
  yellow. 
  Petals 
  minute, 
  shorter 
  than 
  the 
  reflexed 
  sepals. 
  

   Akenes 
  in 
  a 
  globular 
  head, 
  smooth, 
  with 
  a 
  slender, 
  recurved 
  beak. 
  

   On 
  low 
  ground.* 
  

  

  4. 
  R. 
  fascicularis 
  Muhl. 
  TUFTED 
  BUTTERCUP. 
  Perennial. 
  Stems 
  

   clustered 
  from 
  thickened 
  fibrous 
  roots, 
  ascending, 
  5-9 
  in. 
  high, 
  cov- 
  

   ered 
  with 
  close-lying 
  silky 
  hairs. 
  Leaves 
  3-5-divided, 
  the 
  divisions 
  

  

  