﻿COMPOSITE 
  FAMILY 
  253 
  

  

  XXI. 
  PYRRHOPAPPUS 
  DC. 
  (SITILIAS) 
  

  

  Annual 
  or 
  biennial 
  ; 
  stem 
  erect, 
  leafy 
  below, 
  nearly 
  naked 
  

   above, 
  smooth. 
  Leaves 
  oblong, 
  toothed 
  or 
  pinnatifid. 
  Heads 
  

   large, 
  long-peduncled 
  ; 
  involucre 
  cylindrical 
  or 
  spreading, 
  the 
  

   inner 
  row 
  of 
  bracts 
  erect, 
  united 
  at 
  the 
  base, 
  the 
  outer 
  rows 
  

   shorter 
  and 
  spreading 
  ; 
  receptacle 
  naked. 
  Flowers 
  yellow 
  ; 
  

   rays 
  truncate, 
  5-toothed 
  at 
  the 
  apex. 
  Akenes 
  oblong, 
  5-ribbed, 
  

   narrowed 
  above 
  into 
  a 
  long 
  and 
  slender 
  beak 
  ; 
  pappus 
  soft, 
  

   tawny, 
  with 
  a 
  short, 
  soft-hairy 
  ring 
  at 
  the 
  base.* 
  

  

  1. 
  P. 
  carolinianus 
  DC. 
  FALSE 
  DANDELION. 
  Annual 
  or 
  biennial 
  ; 
  

   stem 
  glabrous, 
  furrowed, 
  branched 
  above, 
  2-3 
  ft. 
  high. 
  Lower 
  leaves 
  

   lanceolate 
  to 
  oblong, 
  entire, 
  toothed 
  or 
  pinnatifid, 
  narrowed 
  into 
  a 
  

   margined 
  petiole 
  ; 
  the 
  upper 
  sessile, 
  bract-like, 
  entire. 
  Heads 
  few, 
  

   long-peduncled 
  ; 
  peduncles 
  and 
  involucre 
  sometimes 
  finely 
  downy 
  ; 
  

   inner 
  bracts 
  calloused 
  at 
  the 
  apex, 
  the 
  outer 
  awl-shaped 
  and 
  spread- 
  

   ing. 
  Akenes 
  much 
  shorter 
  than 
  the 
  thread-like 
  beak. 
  Common 
  in 
  

   fields.* 
  

  

  XXII. 
  HIERACIUM 
  L. 
  

  

  Perennial 
  herbs, 
  often 
  covered 
  with 
  glandular 
  or 
  star-shaped 
  

   hairs 
  ; 
  juice 
  milky. 
  Leaves 
  alternate. 
  Heads 
  solitary, 
  or 
  in 
  

   corymbs 
  or 
  panicles 
  ; 
  bracts 
  of 
  the 
  involucre 
  many, 
  overlap- 
  

   ping, 
  unequal 
  ; 
  receptacle 
  flattish, 
  naked, 
  pitted. 
  Corollas 
  

   yellow, 
  rarely 
  orange. 
  Arms 
  of 
  the 
  style 
  slender 
  and 
  upper 
  

   part 
  of 
  the 
  style 
  hairy 
  ; 
  akenes 
  angled 
  or 
  grooved, 
  not 
  beaked. 
  

   Pappus 
  hairs 
  in 
  a 
  single 
  row, 
  simple, 
  stiff, 
  tawny 
  or 
  brownish, 
  

   brittle. 
  [Most 
  of 
  our 
  commoner 
  species 
  bloom 
  in 
  the 
  late 
  

   summer 
  or 
  autumn.] 
  

  

  1. 
  H. 
  aurantiacum 
  L. 
  ORANGE 
  HIERACIUM, 
  DEVIL'S 
  PAINT 
  BRUSH. 
  

   Stem 
  leafless 
  or 
  occasionally 
  with 
  1 
  or 
  2 
  small 
  sessile 
  leaves, 
  clothed 
  

   with 
  long 
  hairs. 
  Basal 
  leaves 
  oblanceolate, 
  hairy, 
  2J-6 
  in. 
  long. 
  

   Scapes 
  8-24 
  in. 
  high. 
  Heads 
  corymbed, 
  about 
  f 
  in. 
  in 
  diameter, 
  

   orange-red. 
  A 
  common 
  weed, 
  naturalized 
  from 
  Europe. 
  

  

  2. 
  H. 
  venosum 
  L. 
  RATTLESNAKE 
  WEED. 
  Stem 
  scape-like, 
  usually 
  

   leafless 
  or 
  nearly 
  so, 
  smooth, 
  1-2 
  ft. 
  high. 
  Basal 
  leaves 
  2-5 
  in. 
  long, 
  

   obovate 
  or 
  ovate-oblong, 
  generally 
  purple-veined. 
  Heads 
  rather 
  large, 
  

   yellow, 
  in 
  a 
  loose 
  panicled 
  corymb. 
  Dry 
  hills 
  and 
  roadsides, 
  and 
  in 
  

   pine 
  woods 
  E. 
  

  

  