﻿ROSE 
  FAMILY 
  123 
  

  

  straightish 
  prickles 
  below. 
  Leaves 
  petioled, 
  of 
  3-7 
  ovate 
  leaflets 
  which 
  

   are 
  acute, 
  irregularly 
  serrate, 
  soft-hairy 
  beneath. 
  Flowers 
  racemed, 
  

   the 
  lower 
  ones 
  leafy-bracted. 
  Petals 
  white, 
  obovate, 
  much 
  longer 
  

   than 
  the 
  taper-pointed 
  sepals. 
  Fruit 
  long, 
  of 
  small 
  drupelets. 
  Common 
  

   in 
  thickets.* 
  

  

  6. 
  R. 
  cuneifolius 
  Pursh. 
  SAND 
  BLACKBERRY. 
  Stem 
  shrubby, 
  

   erect 
  or 
  diffuse, 
  2-3 
  ft. 
  high 
  ; 
  prickles 
  straight 
  or 
  recurved. 
  Leaves 
  

   petioled, 
  3-5-foliate 
  ; 
  leaflets 
  obovate, 
  serrate 
  towards 
  the 
  apex, 
  

   wedge-shaped 
  towards 
  the 
  base, 
  rough 
  above, 
  white 
  downy-woolly 
  

   beneath. 
  Racemes 
  mainly 
  terminal, 
  few-flowered. 
  Petals 
  white, 
  

   longer 
  than 
  the 
  sepals. 
  Fruit 
  ovoid, 
  black, 
  smaller 
  than 
  the 
  preced- 
  

   ing. 
  Common 
  in 
  old 
  fields.* 
  

  

  7. 
  R. 
  hispidus 
  L. 
  RUNNING 
  SWAMP 
  BLACKBERRY. 
  Stem 
  trailing 
  

   or 
  prostrate, 
  often 
  several 
  feet 
  in 
  length, 
  armed 
  with 
  recurved 
  

   prickles. 
  Leaves 
  petioled, 
  mostly 
  of 
  3 
  leaflets; 
  leaflets 
  obovate, 
  

   obtuse, 
  thick, 
  dark 
  green 
  and 
  shining 
  above. 
  Flowering 
  branches 
  

   commonly 
  erect, 
  few-flowered, 
  flowers 
  white. 
  Fruit 
  small, 
  reddish, 
  

   turning 
  nearly 
  black. 
  In 
  swamps 
  and 
  low 
  ground. 
  

  

  8. 
  R. 
  villosus 
  Ait. 
  Low 
  BLACKBERRY, 
  DEWBERRY. 
  Stems 
  

   shrubby, 
  trailing 
  widely, 
  3-10 
  ft. 
  long, 
  somewhat 
  prickly. 
  Leaflets 
  

   usually 
  3, 
  but 
  sometimes 
  5 
  or 
  7, 
  ovate, 
  acute, 
  sharply 
  (and 
  doubly) 
  

   cut-serrate, 
  thin. 
  Racemes 
  upright 
  on 
  the 
  short 
  branches, 
  1-3-flow- 
  

   ered. 
  Fruit 
  roundish, 
  of 
  fewer 
  and 
  larger 
  grains 
  than 
  No. 
  5, 
  very 
  

   sweet 
  when 
  fully 
  ripe. 
  Common 
  N., 
  in 
  stony 
  or 
  gravelly 
  fields. 
  

  

  XIII. 
  ROSA 
  L. 
  

  

  Erect 
  running 
  or 
  climbing 
  prickly 
  shrubs. 
  Leaves 
  pinnate, 
  

   leaflets 
  serrate, 
  stipules 
  united 
  to 
  the 
  petiole. 
  Calyx 
  tube 
  urn- 
  

   shaped, 
  with 
  a 
  rather 
  narrow 
  mouth. 
  Petals 
  (in 
  single 
  roses) 
  5. 
  

   Stamens 
  many, 
  inserted 
  around 
  the 
  inside 
  of 
  the 
  mouth 
  of 
  the 
  

   calyx 
  tube. 
  Ovaries 
  many, 
  hairy, 
  ripening 
  into 
  bony 
  akenes, 
  

   inclosed 
  in 
  the 
  rather 
  fleshy 
  and 
  sometimes 
  eatable 
  calyx 
  tube. 
  

  

  1. 
  R. 
  pratincola 
  Greene. 
  Stems 
  densely 
  prickly, 
  1-2 
  ft. 
  high. 
  

   Stipules 
  narrow, 
  usually 
  with 
  glandular 
  teeth 
  or 
  a 
  fringe 
  of 
  glandu- 
  

   lar 
  hairs 
  toward 
  the 
  tip; 
  leaflets 
  7-11, 
  varying 
  from 
  elliptical 
  to 
  

   nearly 
  obovate, 
  obtuse 
  at 
  the 
  tip, 
  narrowed 
  at 
  the 
  base, 
  simply 
  

   toothed 
  or 
  serrate, 
  rather 
  firm 
  and 
  distinctly 
  veined. 
  Flowers 
  usually 
  

   in 
  corymbs 
  ; 
  sepals 
  lanceolate, 
  taper-pointed. 
  Fruit 
  globose, 
  smooth. 
  

   Prairies, 
  especially 
  W. 
  

  

  2. 
  R. 
  blanda 
  Ait. 
  EARLY 
  WILD 
  ROSE. 
  Stems 
  1-3 
  ft. 
  high, 
  usually 
  

   without 
  prickles 
  ; 
  stipules 
  broad. 
  Flowers 
  generally 
  large, 
  corymbed 
  

   or 
  solitary; 
  sepals 
  after 
  flowering 
  closing 
  over 
  the 
  mouth 
  of 
  the 
  calyx 
  

   tube 
  and 
  persistent. 
  Rocks 
  and 
  rocky 
  shores. 
  

  

  