﻿88 
  KEY 
  AND 
  FLORA 
  

  

  VI. 
  CLEMATIS 
  L. 
  

  

  Perennial 
  herbs 
  or 
  slightly 
  woody 
  vines, 
  usually 
  climbing 
  

   by 
  the 
  leafstalks. 
  Leaves 
  opposite, 
  simple 
  or 
  compound. 
  

   Sepals 
  4, 
  petal-like. 
  Petals 
  very 
  small 
  or 
  wanting. 
  Pistils 
  

   numerous, 
  tipped 
  by 
  the 
  persistent 
  styles, 
  which 
  often 
  become 
  

   long 
  and 
  plumose 
  in 
  fruit.* 
  

  

  1. 
  C. 
  crispa 
  L. 
  MARSH 
  CLEMATIS. 
  Stem 
  climbing, 
  a 
  little 
  woody 
  

   below, 
  slightly 
  downy 
  above, 
  3-5 
  ft. 
  high. 
  Leaves 
  pinnately 
  com- 
  

   pound 
  ; 
  leaflets 
  5-7, 
  varying 
  from 
  lanceolate 
  to 
  ovate, 
  thin, 
  entire 
  

   or 
  3-5-lobed. 
  Flowers 
  showy, 
  perfect, 
  solitary, 
  on 
  long 
  axillary 
  pedun- 
  

   cles. 
  Sepals 
  lanceolate, 
  taper-pointed, 
  thick, 
  wavy 
  on 
  the 
  margins, 
  

   twice 
  the 
  length 
  of 
  the 
  stamens, 
  light 
  bluish-purple, 
  1-1 
  V 
  in. 
  in 
  length. 
  

   Tails 
  of 
  the 
  ripened 
  akenes 
  1 
  in. 
  long, 
  silky. 
  Rich 
  woods 
  and 
  river 
  

   banks 
  S.* 
  

  

  2. 
  C. 
  Viorna 
  L. 
  LEATHER 
  FLOWER. 
  Stem 
  climbing, 
  nearly 
  smooth, 
  

   6-10 
  ft. 
  long. 
  Leaves 
  usually 
  pinnately 
  compound, 
  the 
  lowest 
  pair 
  

   often 
  compound 
  in 
  threes 
  and 
  the 
  upper 
  pair 
  simple. 
  Leaflets 
  usu- 
  

   ally 
  5-7, 
  oblong-ovate 
  or 
  oval, 
  acute, 
  firm, 
  entire 
  or 
  lobed. 
  Calyx 
  

   bell-shaped, 
  nodding 
  ; 
  sepals 
  ovate, 
  taper-pointed 
  with 
  a 
  short, 
  re- 
  

   curved 
  point, 
  thick 
  and 
  leathery, 
  reddish-purple, 
  1 
  in. 
  long. 
  Tails 
  

   of 
  the 
  akenes 
  plumose, 
  1| 
  in. 
  long, 
  brownish. 
  On 
  river 
  banks 
  and 
  

   rich 
  soil.* 
  

  

  VH. 
  ISOPYRUM 
  L. 
  

  

  Small, 
  smooth 
  herbs. 
  Leaves 
  2-3 
  times 
  compound, 
  in 
  

   threes 
  ; 
  the 
  leaflets 
  2-3-lobed. 
  Flowers 
  peduncled, 
  white. 
  

   Sepals 
  5, 
  petal-like, 
  soon 
  falling. 
  Petals 
  wanting 
  (in 
  our 
  

   species). 
  Stamens 
  l(MtO. 
  Pistils 
  3-6 
  or 
  more. 
  

  

  1. 
  I. 
  biternatum 
  T. 
  & 
  G. 
  A 
  delicate, 
  erect 
  plant, 
  with 
  alternate 
  

   branches, 
  looking 
  much 
  like 
  . 
  1 
  1,< 
  ni,tn< 
  Hit, 
  with 
  clustered 
  stems 
  from 
  

   perennial 
  tuberous 
  roots. 
  Damp 
  woods. 
  

  

  VIII. 
  CALTHA 
  L. 
  

  

  Smooth 
  perennials 
  with 
  large, 
  roundish 
  leaves. 
  Sepals 
  

   petal-like, 
  5-9. 
  Petals 
  none. 
  Pistils 
  5-10, 
  each 
  consisting 
  

   of 
  a 
  1-celled 
  ovary 
  with 
  a 
  nearly 
  sessile 
  stigma. 
  Fruit 
  a 
  

   many-seeded 
  follicle. 
  

  

  1. 
  C. 
  palustris 
  L. 
  MA 
  K-II 
  MARIGOLD, 
  COWSLIPS, 
  MEADOW 
  BUT- 
  

   TERCUP 
  (both 
  the 
  latter 
  unsuitable 
  names, 
  but 
  in 
  common 
  use). 
  Stein 
  

   hollow, 
  smooth, 
  ascending 
  ; 
  leaves 
  smooth, 
  roundish 
  and 
  heart-shaped, 
  

  

  