﻿124 
  KEY 
  AND 
  FLORA 
  

  

  3. 
  R. 
  Woodsii 
  Lindl. 
  Stems 
  3-36 
  in. 
  high, 
  with 
  slender 
  spines 
  which 
  

   are 
  often 
  wanting 
  above. 
  Stipules 
  rather 
  broad, 
  entire; 
  leaflets 
  usu- 
  

   ally 
  5-7, 
  varying 
  from 
  obovate 
  to 
  lanceolate, 
  rather 
  obtuse 
  at 
  the 
  apex, 
  

   narrowed 
  at 
  the 
  base, 
  somewhat 
  serrate. 
  Flowers 
  corymbed 
  or 
  solitary. 
  

   Sepals 
  erect 
  on 
  the 
  globose 
  or 
  somewhat 
  ovoid 
  fruit. 
  Prairies 
  W. 
  

  

  4. 
  R. 
  rubiginosa 
  L. 
  SWKETBKIER. 
  Stem 
  erect 
  or 
  curving, 
  armed 
  

   with 
  stout 
  recurved 
  prickles. 
  Leaves 
  with 
  5-7 
  leaflets, 
  the 
  latter 
  

   broadly 
  oval, 
  coarsely 
  serrate, 
  glandular-bristly 
  beneath, 
  aromatic. 
  

   Flowers 
  white 
  or 
  pink. 
  Sepals 
  widely 
  spreading, 
  deciduous. 
  Fruit 
  

   obovate, 
  slightly 
  bristly. 
  Common 
  in 
  cultivation 
  and 
  sometimes 
  wild.* 
  

  

  5. 
  R. 
  Carolina 
  L. 
  SWAMP 
  ROSE. 
  Stems 
  4-8 
  ft. 
  high, 
  with 
  stout 
  

   and 
  generally 
  recurved 
  prickles. 
  Stipules 
  long 
  and 
  narrow 
  ; 
  leaflets 
  

   commonly 
  downy 
  beneath, 
  finely 
  serrate. 
  Flowers 
  several 
  in 
  a 
  corymb, 
  

   bright 
  rose 
  color. 
  Sepals 
  spreading 
  and 
  falling 
  off 
  after 
  flowering. 
  

   Damp 
  woods 
  and 
  borders 
  of 
  swamps. 
  

  

  6. 
  R. 
  virginiana 
  Mill. 
  DWARF 
  WILD 
  ROSE. 
  Stems 
  varying 
  in 
  

   heignt 
  from 
  less 
  than 
  a 
  foot 
  to 
  6 
  ft., 
  with 
  stout, 
  somewhat 
  hooked 
  

   prickles. 
  Stipules 
  rather 
  broad 
  ; 
  leaflets 
  small, 
  thickish 
  and 
  glossy 
  

   above, 
  coarsely 
  toothed 
  toward 
  the 
  tip. 
  Flowers 
  corymbed 
  or 
  soli- 
  

   tary, 
  pale 
  rose 
  color. 
  Sepals 
  spreading 
  and 
  falling 
  off 
  after 
  flowering. 
  

   Moist 
  ground 
  and 
  swamps. 
  

  

  7. 
  R. 
  humilis 
  Marsh. 
  PASTURE 
  ROSE. 
  Stem 
  erect, 
  branched, 
  

   usually 
  armed 
  with 
  stout 
  stipular 
  prickles 
  and 
  with 
  bristles, 
  but 
  

   sometimes 
  nearly 
  smooth, 
  1-3 
  ft. 
  tall. 
  Leaves 
  mostly 
  of 
  5 
  leaflets; 
  

   stipules 
  entire 
  ; 
  leaflets 
  oblong-lanceolate 
  or 
  oval, 
  shining 
  above, 
  

   pale 
  beneath, 
  sharply 
  serrate. 
  Flowers 
  solitary 
  or 
  2-3 
  together, 
  

   2-3 
  in. 
  broad, 
  pink. 
  Peduncles 
  and 
  calyx 
  glandular-downy. 
  Sepals 
  

   leaf-like, 
  spreading, 
  finally 
  deciduous. 
  Styles 
  distinct. 
  Fruit 
  globose, 
  

   bristly-hairy. 
  On 
  dry 
  soil; 
  our 
  most 
  common 
  wild 
  rose. 
  S.* 
  

  

  XTV. 
  PRUNUS 
  L. 
  

  

  Trees 
  or 
  shrubs. 
  Leaves 
  simple, 
  with 
  stipules, 
  which 
  are 
  

   often 
  small 
  or 
  fall 
  off 
  early. 
  Calyx 
  with 
  a 
  bell-shaped 
  or 
  urn- 
  

   shaped 
  tube 
  and 
  5-lobed 
  spreading 
  limb, 
  falling 
  off 
  after 
  flower- 
  

   ing. 
  Petals 
  5 
  ; 
  stamens 
  3-5 
  times 
  as 
  numerous, 
  or 
  indefinite, 
  

   inserted 
  on 
  the 
  throat 
  of 
  the 
  calyx 
  tube. 
  Pistil 
  1, 
  long-styled, 
  

   with 
  2 
  ovules, 
  ripening 
  into 
  a 
  single 
  drupe. 
  

  

  B. 
  Fl. 
  species 
  8 
  (Amyydalns). 
  

  

  A. 
  Stone 
  more 
  or 
  less 
  spherical 
  ; 
  fruit 
  smooth 
  when 
  ripe. 
  Branches 
  

   not 
  spiny. 
  (Cherries.) 
  

  

  1. 
  P. 
  serotina 
  Ehrh. 
  WILD 
  BLACK 
  CHERRY. 
  Often 
  becoming 
  a 
  

   large 
  tree 
  ; 
  bark 
  on 
  old 
  trees 
  rough, 
  nearly 
  black. 
  Leaves 
  rather 
  

  

  