﻿200 
  COLLECTIONS 
  TOWARDS 
  

  

  len) 
  even, 
  longish 
  stipitate, 
  partly 
  club-shaped, 
  cereaeeous 
  and 
  hyaline, 
  

   deciduous, 
  alternating 
  in 
  the 
  receiving 
  cells 
  ; 
  follicles 
  two, 
  smooth 
  and 
  

   even 
  ; 
  seeds 
  comose, 
  and 
  attached 
  as 
  in 
  Asclepias. 
  — 
  Hab. 
  From 
  Fort 
  

   Smith 
  to 
  Red 
  river, 
  on 
  rocks 
  and 
  in 
  dry 
  prairies. 
  Flowering 
  in 
  June. 
  

   Mr 
  Pursh 
  found 
  this 
  species 
  from 
  Pennsylvania 
  to 
  Virginia. 
  Pro- 
  

   fessor 
  Ives 
  discovered 
  the 
  same 
  plant 
  near 
  New 
  Haven, 
  and 
  likewise 
  

   described 
  and 
  figured 
  in 
  Silliman's 
  Journal, 
  a 
  lanceolate 
  leaved 
  variety, 
  

   which 
  he 
  then 
  supposed 
  to 
  be 
  a 
  new 
  species, 
  but 
  which 
  he 
  afterwards 
  

   justly 
  regarded 
  as 
  a 
  mere 
  uncertain 
  variety 
  ; 
  the 
  leaves 
  of 
  this 
  species 
  

   varying 
  from 
  oval 
  to 
  ovate, 
  lanceolate 
  and 
  oblong, 
  and 
  are 
  either 
  flat, 
  

   undulated, 
  smooth 
  or 
  pubescent. 
  The 
  plant 
  of 
  Arkansas 
  differs 
  from 
  

   that 
  of 
  New 
  Haven 
  more 
  constantly 
  in 
  the 
  colour 
  of 
  the 
  lepanthium, 
  

   which 
  is 
  somewhat 
  brown 
  instead 
  of 
  yellowish 
  green. 
  

  

  2. 
  P. 
  lanuginosus 
  (Asclepias 
  lanuginosa, 
  Nuttall's 
  Gen. 
  Am. 
  vol. 
  1, 
  

   p. 
  168). 
  Decumbens, 
  foliis 
  ovatis 
  sparsis, 
  umbellis 
  subsolitariis 
  termi- 
  

   nalibus. 
  — 
  Obs. 
  Root 
  tuberous; 
  stem 
  four 
  to 
  six 
  inches 
  high; 
  flowers 
  

   greenish. 
  A 
  dubious 
  species, 
  and 
  requires 
  re-examination 
  in 
  a 
  living 
  

   or 
  more 
  perfect 
  state. 
  — 
  Hab. 
  On 
  dry 
  and 
  gravelly 
  hills, 
  about 
  thirty 
  

   miles 
  below 
  the 
  confluence 
  of 
  White 
  river 
  with 
  the 
  Missouri. 
  

  

  3. 
  P. 
  longifolius 
  (Asclepias 
  longifolia, 
  Mich. 
  Flor. 
  Am. 
  1, 
  p. 
  116; 
  

   Acerates 
  longifolia, 
  Elliott, 
  Sketches 
  Bot. 
  p. 
  317). 
  Puberulus, 
  caule 
  

   suberecto, 
  foliis 
  sparsis 
  praelongo-linearibus 
  acutis, 
  umbellis 
  caulinis 
  

   pedunculalis; 
  lepanthium 
  stipitatum 
  antheridio 
  brevius, 
  folliculis 
  vil- 
  

   losis. 
  — 
  Obs. 
  Perennial 
  and 
  herbaceous. 
  Stem 
  two 
  to 
  three 
  feet 
  high, 
  

   slightly 
  pubescent; 
  leaves 
  half 
  an 
  inch 
  wide 
  and 
  half 
  a 
  foot 
  long, 
  

   scabrous 
  on 
  the 
  margin, 
  the 
  nerves 
  confluent 
  below 
  the 
  margin, 
  midrib 
  

   beneath 
  pubescent; 
  umbells 
  many, 
  subglobose, 
  loose; 
  bracts 
  subulate; 
  

   pedicells 
  pubescent, 
  nearly 
  an 
  inch 
  in 
  length 
  ; 
  flowers 
  smaller, 
  greenish, 
  

   petals 
  obscure 
  purple 
  at 
  the 
  summit, 
  reflected 
  ; 
  segments 
  of 
  the 
  lepan- 
  

   thium 
  oblong, 
  concave, 
  with 
  a 
  purplish 
  line 
  near 
  the 
  base, 
  shorter 
  than 
  

   the 
  antheridium, 
  stipitate 
  below, 
  and 
  distinctly 
  inserted 
  ; 
  clefts 
  of 
  the 
  

   antheridium 
  salient 
  at 
  the 
  summit; 
  cusps 
  membranaceous; 
  follicles 
  

   two, 
  villous, 
  rostrate. 
  — 
  Hab. 
  On 
  the 
  margins 
  of 
  ponds, 
  and 
  in 
  places 
  

   overflowed 
  by 
  winter 
  rains, 
  from 
  Illinois 
  and 
  Missouri 
  to 
  Red 
  river. 
  

   Flowering 
  in 
  June. 
  Also 
  in 
  swamps 
  near 
  the 
  Atlantic 
  sea 
  coast, 
  from 
  

   Sussex 
  county 
  in 
  Delaware 
  (v. 
  v.) 
  to 
  Georgia. 
  

  

  