﻿112 
  BOTANICAL 
  GAZETTE. 
  [ 
  ^lav, 
  

  

  callus 
  to 
  the 
  joint 
  of 
  the 
  awn, 
  clothed 
  with 
  prominent 
  silky 
  

   white 
  hairs 
  over 
  i 
  mm. 
  long 
  ; 
  awn 
  slightly 
  twisted 
  and 
  bent, 
  

   about 
  2 
  cm. 
  \ong.-~Slipa 
  caduca 
  Scribner. 
  Collected 
  by 
  

  

  Mts 
  

  

  J 
  

  

  0. 
  Pringlei. 
  Culms 
  erect, 
  rather 
  slender, 
  6 
  to 
  i2 
  dm. 
  

   high: 
  radical 
  leaves 
  numerous, 
  half 
  or 
  two-thirds 
  as 
  long 
  as 
  

   the 
  culm, 
  scabrous, 
  flat 
  or 
  involute, 
  the 
  largest 
  2 
  mm. 
  wide, 
  

   those 
  of 
  the 
  culm 
  3, 
  the 
  upper 
  one 
  filiform, 
  rigid, 
  3 
  to 
  6 
  cm. 
  

   long; 
  sheaths 
  longer 
  than 
  the 
  internodes 
  ; 
  ligide 
  2 
  to 
  3 
  mm. 
  

   long: 
  panicle 
  much 
  exserted, 
  open, 
  thin, 
  flexuose, 
  15 
  to 
  20 
  

   cm. 
  long, 
  branches 
  slender, 
  in 
  twos 
  to 
  fours, 
  some 
  of 
  them 
  

   half 
  as 
  long 
  as 
  the 
  panicle, 
  bearing 
  a 
  few 
  flowers 
  above 
  the 
  

   middle: 
  empty 
  glumes 
  equal, 
  green 
  on 
  the 
  back, 
  brownish 
  

   towards 
  the 
  thin 
  margins 
  and 
  apex, 
  elliptical-lanceolate, 
  5- 
  

   nerved, 
  8 
  to 
  10 
  mm. 
  long: 
  floret 
  lance-obovate, 
  flattened, 
  

   pubescent, 
  becoming 
  dark 
  brown, 
  6 
  mm. 
  long, 
  callus 
  blunt; 
  

   awn 
  irregularly 
  bent, 
  slightly 
  twisted 
  for 
  the 
  low^er 
  half, 
  

   about 
  2 
  cm. 
  long: 
  palea 
  firm, 
  nearly 
  as 
  long 
  as 
  its 
  glume: 
  

   stamens 
  3.— 
  No. 
  1410, 
  C. 
  G. 
  Pringle, 
  collected 
  in 
  Chihua- 
  

   hua, 
  Mexico, 
  1887, 
  and 
  distributed 
  as 
  Siifa 
  Priiiglet 
  Scnh- 
  

  

  ner. 
  

  

  Agricultural 
  College, 
  Michi'o-an. 
  

  

  a---> 
  -'-''-'"A- 
  

  

  Prelim 
  iiijviy 
  notes 
  on 
  Peritvle. 
  

  

  J. 
  N. 
  ROSE. 
  

  

  (with 
  plate 
  XIII.) 
  

  

  

  to 
  this 
  genus 
  in 
  their 
  "Genera 
  Plantarum." 
  When 
  this 
  

   genus 
  was 
  revised 
  in 
  the 
  "Synoptical 
  Flora" 
  (1884) 
  only 
  

   en 
  species 
  were 
  recorded. 
  In 
  the 
  last 
  few 
  years, 
  especially 
  

   tniough 
  the 
  explorations 
  in 
  Lower 
  California, 
  quite 
  a 
  mass 
  

   ot 
  new 
  material 
  has 
  been 
  brought 
  to 
  light 
  and 
  the 
  number 
  

  

  01 
  species 
  has 
  been 
  doubled, 
  besides 
  adding 
  a 
  number 
  of 
  

   well 
  marked 
  vnn'pti'oe 
  t 
  i 
  .. 
  . 
  v 
  . 
  .^ 
  • 
  .!_^ 
  to 
  

  

  well 
  marked 
  varieties. 
  I 
  have 
  not 
  attempted 
  at 
  this 
  time 
  to 
  

   ^.Ta 
  '? 
  ''°™P^,^e 
  revision 
  of 
  the 
  genus, 
  but 
  to 
  bring 
  together 
  

   ne 
  data 
  which 
  have 
  come 
  to 
  light 
  since 
  the 
  publication 
  of 
  the 
  

   oynoDtical 
  F 
  nra 
  '' 
  ^ 
  

  

  ynoptical 
  FloraJ' 
  

  

  Watson 
  

  

  fr.. 
  }"\ 
  ■ 
  ,. 
  ^^- 
  ^ereno 
  Watson 
  and 
  Dr. 
  Geo. 
  Vascy 
  

  

  lor 
  looking 
  over 
  this 
  manuscript, 
  and 
  for 
  the 
  use 
  of 
  the 
  large 
  

  

  