﻿46 
  

  

  Rydberg: 
  Notes 
  ox 
  Rosaceae 
  

  

  Key 
  to 
  tbe 
  groups 
  

  

  + 
  

  

  Styles 
  much 
  exserted, 
  united, 
  about 
  equaling 
  the 
  stamens; 
  

  

  stipules 
  adnate; 
  sepals 
  reflexed, 
  deciduous; 
  stem 
  

  

  climbing, 
  with 
  curved 
  prickles- 
  

   Styles 
  not 
  exserted, 
  or 
  only 
  slightly 
  so, 
  distinct; 
  stigmas 
  

  

  forming 
  a 
  head 
  closing 
  the 
  mouth 
  of 
  the 
  hypaa- 
  

  

  thium. 
  

  

  Stipules 
  almost 
  free 
  from 
  the 
  petioles; 
  introduced 
  

  

  climbers 
  or 
  trailers. 
  

   Stipules 
  for 
  most 
  of 
  their 
  length 
  adnate 
  to 
  the 
  petioles; 
  

  

  plants 
  rarely 
  climbing. 
  

   Sepals 
  after 
  flowering 
  reflexed 
  and 
  soon 
  deciduous. 
  

   Achenes 
  inserted 
  both 
  on 
  the 
  inner 
  walls 
  and 
  in 
  

  

  the 
  bottom 
  of 
  the 
  hypanthium; 
  prickles 
  

   rarely 
  infrastipular. 
  

   Stem 
  prickly. 
  

  

  Leaflets 
  3-5. 
  rarely 
  7, 
  large, 
  round; 
  stem 
  

   with 
  both 
  scattered 
  prickles 
  and 
  bris- 
  

  

  sol 
  itary 
  

  

  Leaflets 
  

  

  4 
  

  

  prickles, 
  very 
  rarely 
  with 
  bristles. 
  

   Stem 
  unarmed, 
  

  

  Achenes 
  inserted 
  only 
  in 
  the 
  bottom 
  of 
  the 
  

  

  bristly 
  hypanthium; 
  stem 
  with 
  infrastipular 
  

   prickles 
  and 
  usually 
  with 
  numerous 
  bristles 
  

   on 
  the 
  young 
  shoots, 
  

  

  \ 
  

  

  Sepals 
  after 
  flowering 
  erect, 
  connivent, 
  long- 
  

  

  persistent 
  on 
  the 
  fruit; 
  achenes 
  inserted 
  both 
  

  

  m 
  

  

  on 
  the 
  inner 
  walls 
  and 
  in 
  the 
  bottom 
  of 
  the 
  

  

  hypanth 
  

  

  solitary 
  

  

  ported 
  by 
  a 
  bract; 
  leaflets 
  large. 
  

   Stem 
  with 
  scattered 
  prickles, 
  rarely 
  with 
  in- 
  

   termixed 
  bristles; 
  sepals 
  more 
  or 
  less 
  

   lobed; 
  foliage 
  glandular-punctate, 
  sweet- 
  

   scented 
  (in 
  R, 
  ruhiginosa 
  Mid 
  R, 
  totnen- 
  

   losa). 
  

  

  Stem, 
  at 
  least 
  the 
  j-oung 
  shoots, 
  bristly; 
  

   prickles 
  infrastipular 
  or 
  lacking; 
  sepals 
  

   entire 
  or 
  the 
  outer 
  sometimes 
  with 
  one 
  or 
  

  

  two 
  lobes: 
  fnliapp 
  tint 
  vpi-^r 
  cr«roo*-_c-/-v^«4.«j 
  

  

  I. 
  Synstylae. 
  

  

  IL 
  Bracteatae 
  

  

  III. 
  Gallicae 
  

  

  IV. 
  Caninae. 
  

   VI. 
  Cinnamomiae 
  

  

  V. 
  Carolinae. 
  

  

  IV. 
  Caninae. 
  

  

  VL 
  Cinnamomiae. 
  

  

  Flowers 
  solitary, 
  bractless; 
  leaflets 
  very 
  small. 
  VII. 
  PimpinellifOLIAE 
  

  

  pectinate 
  

  

  I. 
  SYNSTYLAE 
  

  

  Stipules 
  entire 
  or 
  denticulate. 
  

  

  1. 
  R. 
  muUiJlora 
  

  

  Leaflets 
  

  

  and 
  

  

  Leaflets 
  

  

  2. 
  R, 
  setigera, 
  

  

  3, 
  R, 
  rubifolia. 
  

  

  