﻿176 
  KEY 
  AND 
  FLORA 
  

  

  I. 
  CORNUS 
  L. 
  

  

  Trees, 
  shrubs, 
  or 
  herbs. 
  Leaves 
  usually 
  opposite. 
  Flowers 
  

   in 
  forking 
  cymes, 
  or 
  in 
  umbels 
  or 
  heads, 
  each 
  with 
  an 
  invo- 
  

   lucre, 
  white 
  or 
  yellow. 
  Calyx 
  teeth 
  4. 
  Petals 
  4. 
  Stamens 
  4. 
  

   Ovary 
  2-celled. 
  Drupe 
  ovoidal 
  or 
  ellipsoidal, 
  the 
  stone 
  

   2-celled. 
  

  

  1. 
  C- 
  canadensis 
  L. 
  DWARF 
  CORNEL, 
  BUNCHBERRY, 
  PUDDING 
  

   BERRY. 
  Stem 
  herbaceous, 
  excepting 
  at 
  the 
  base, 
  low 
  (3-9 
  in.), 
  and 
  

   unbranched. 
  Rootstock 
  rather 
  woody, 
  slender, 
  and 
  creeping. 
  Leaves 
  

   in 
  what 
  appears 
  to 
  be 
  a 
  whorl 
  of 
  4 
  or 
  6 
  at 
  the 
  summit 
  of 
  the 
  stem, 
  

   sessile, 
  ovate, 
  oval 
  or 
  nearly 
  so, 
  acute 
  at 
  each 
  end, 
  entire, 
  smooth 
  or 
  

   very 
  slightly 
  downy. 
  Flower 
  stalk 
  slender, 
  |-lj 
  in. 
  long, 
  with 
  a 
  

   whorl 
  of 
  4-6 
  large, 
  white, 
  petal-like 
  bracts, 
  forming 
  an 
  involucre 
  

   round 
  the 
  small 
  head 
  of 
  greenish 
  flowers; 
  the 
  head 
  with 
  its 
  invo- 
  

   lucre 
  appearing 
  to 
  others 
  than 
  botanists 
  like 
  a 
  single 
  flower. 
  Fruit 
  

   nearly 
  spherical, 
  scarlet, 
  about 
  } 
  in. 
  in 
  diameter, 
  in 
  a 
  close 
  cluster, 
  

   sweet 
  and 
  eatable, 
  though 
  rather 
  insipid. 
  Damp 
  woods, 
  especially 
  N. 
  

  

  2. 
  C. 
  florida 
  L. 
  FLOWERING 
  DOGWOOD. 
  Small 
  trees; 
  bark 
  rough, 
  

   black. 
  Leaves 
  opposite, 
  petioled, 
  ovate 
  to 
  ovate-lanceolate, 
  entire, 
  

   green 
  and 
  shining 
  above, 
  paler 
  and 
  often 
  downy 
  beneath. 
  Flowers 
  

   small, 
  greenish, 
  in 
  heads 
  which 
  are 
  subtended 
  by 
  4 
  large, 
  white 
  or 
  

   pink, 
  inversely 
  heart-shaped 
  bracts, 
  thickened 
  and 
  greenish 
  at 
  the 
  

   notch. 
  Fruit 
  ovoid, 
  bright 
  red. 
  In 
  rich 
  woods 
  S. 
  and 
  E.* 
  

  

  3. 
  C. 
  circinata 
  L'Her. 
  ROUND-LEAVED 
  DOGWOOD. 
  A 
  shrub 
  3-10 
  

   ft. 
  high, 
  with 
  green, 
  warty 
  twigs. 
  Leaves 
  petioled, 
  roundish-oval, 
  

   contracted 
  to 
  an 
  abrupt 
  point, 
  entire, 
  usually 
  rounded 
  or 
  truncate 
  

   at 
  the 
  base, 
  pale 
  and 
  soft-downy 
  beneath. 
  Flowers 
  in 
  flat 
  cymes, 
  

   1J-2J 
  in. 
  in 
  diameter. 
  Fruit 
  globose, 
  light 
  blue, 
  \ 
  in. 
  or 
  less 
  in 
  

   diameter. 
  Thickets 
  often 
  in 
  rocky 
  soil 
  N. 
  and 
  along 
  Allegheny 
  

   Mountains. 
  

  

  4. 
  C. 
  Amomum 
  Mill. 
  KINNIKINNIK. 
  A 
  shrub 
  6-10 
  ft. 
  high; 
  twigs 
  

   purple, 
  downy 
  when 
  young. 
  Leaves 
  opposite, 
  petioled, 
  ovate 
  or 
  ob- 
  

   long, 
  taper-pointed, 
  smooth 
  above, 
  silky-downy 
  below. 
  Flowers 
  white, 
  

   in 
  rather 
  close 
  cymes. 
  Fruit 
  blue, 
  stone 
  somewhat 
  oblique. 
  In 
  low 
  

   woods.* 
  

  

  5. 
  C. 
  asperifolia 
  Michx. 
  ROUGH-LEAVED 
  DOGWOOD. 
  A 
  shrub 
  

   8-12 
  ft. 
  high; 
  twigs 
  slender, 
  reddish-brown, 
  often 
  warty, 
  densely 
  

   downy 
  when 
  young. 
  Leaves 
  opposite, 
  short-petioled, 
  lance-ovate 
  or 
  

   oblong, 
  acute 
  or 
  taper-pointed, 
  with 
  rough 
  down 
  above, 
  downy-woolly 
  

   below. 
  Cymes 
  flat, 
  spreading, 
  the 
  peduncle 
  and 
  branches 
  covered 
  

   with 
  rough 
  down. 
  Flowers 
  white. 
  Fruit 
  white 
  or 
  pale 
  blue, 
  stone 
  

   depressed-globose. 
  In 
  dry 
  woods.* 
  

  

  