﻿1890,] 
  

  

  BOTANICAL 
  GAZETTE. 
  o'^ 
  

  

  genus 
  Euphorbia. 
  Dr. 
  H. 
  W. 
  Harkness 
  gives 
  a 
  list 
  of 
  the 
  fungi 
  collected, 
  

   among 
  which 
  is 
  a 
  new 
  Puccinia. 
  Over 
  100 
  new 
  species 
  already 
  described 
  

   from 
  a 
  single 
  season's 
  collecting, 
  with 
  many 
  species 
  remaining 
  undeter- 
  

   mined, 
  surely 
  speaks 
  well 
  for 
  the 
  boUnical 
  riches 
  of 
  Lower 
  California. 
  

  

  In 
  THE 
  LAST 
  numbers 
  (37 
  and 
  38) 
  of 
  Engler 
  k 
  Prantl's 
  Die 
  rmtXvr- 
  

   lichen 
  Fflanzenfamilien 
  several 
  orders 
  are 
  presented 
  by 
  Dr. 
  O 
  Drude 
  

   chiefly 
  the 
  Ericaceae. 
  We 
  note 
  the 
  following 
  changes 
  in 
  North 
  Ameri- 
  

   can 
  forms 
  as 
  given 
  in 
  Gray's 
  Synoptical 
  Flora. 
  Clethra 
  is 
  made 
  the 
  type 
  

   of 
  a 
  separate 
  order, 
  Clethraceae. 
  Pyrolacea^ 
  are 
  again 
  kept 
  apart 
  in 
  a 
  dis- 
  

   tinct 
  order, 
  which 
  includes 
  the 
  tribe 
  Pyroleae 
  and 
  the 
  suborder 
  Mono- 
  

   tropete 
  of 
  the 
  Synoptical 
  Flora, 
  Moneses 
  being 
  included 
  in 
  Pyrola. 
  In 
  the 
  

   order 
  Ericace^, 
  Phyllodoce 
  of 
  Salisbury 
  is 
  again 
  separated 
  generically 
  

   from 
  Bryan 
  thus; 
  Lyonia 
  Nutt. 
  is 
  restored 
  as 
  a 
  genus 
  and 
  made 
  to 
  in- 
  

   clude 
  Cassandra 
  and 
  the 
  section 
  Eubotrys 
  of 
  Leucothoe; 
  Arctous, 
  one 
  of 
  

   Gray's 
  sections 
  of 
  Arctostaphylos, 
  is 
  made 
  a 
  genus, 
  and 
  contains 
  our 
  

   Arctostaphylos 
  alpina. 
  

  

  Dr. 
  Oliver 
  R. 
  Willis 
  has 
  just 
  revised 
  Wood's 
  « 
  Lessons 
  in 
  Botany." 
  

   In 
  these 
  days 
  of 
  laboratories 
  and 
  microscopes, 
  even 
  in 
  high 
  schools, 
  there 
  

   is 
  a 
  demand 
  for 
  elementary 
  instruction 
  in 
  plant 
  tissues, 
  as 
  well 
  as 
  for 
  el- 
  

   ementary 
  physiology. 
  The 
  older 
  text-books, 
  in 
  order 
  to 
  keep 
  in 
  the 
  

   market, 
  must 
  meet 
  this 
  demand, 
  and 
  the 
  present 
  edition 
  of 
  the 
  well- 
  

   known 
  text-book 
  mentioned 
  above 
  has 
  this 
  in 
  view. 
  We 
  are 
  glad 
  to 
  see 
  

   that 
  the 
  editor 
  emphasizes 
  the 
  necessity 
  of 
  laboratory 
  work, 
  and 
  presents 
  

   the 
  text-book 
  merely 
  as 
  a 
  full 
  and 
  illustrated 
  catalogue 
  of 
  things 
  that 
  can 
  

   be 
  seen 
  in 
  the 
  study 
  of 
  the 
  plants 
  themselves. 
  The 
  advantage 
  of 
  such 
  

   change 
  in 
  our 
  text-books 
  is 
  not 
  only 
  that 
  it 
  meets 
  a 
  demand, 
  but 
  helps 
  to 
  

   create 
  one. 
  

  

  The 
  eighth 
  part 
  of 
  the 
  Muscologia 
  Gallica^ 
  has 
  come 
  from 
  the 
  author 
  

   and 
  publisher. 
  It 
  includes 
  the 
  genera 
  Webera 
  with 
  15 
  species, 
  Bryum 
  

   with 
  39, 
  and 
  9 
  species 
  of 
  Mnium. 
  The 
  plates, 
  however, 
  do 
  not 
  quite 
  com- 
  

   plete 
  the 
  genus 
  Bryum. 
  The 
  author 
  is 
  entirely 
  conservative 
  in 
  regard 
  to 
  

   nomenclature, 
  and 
  follows 
  Schimper 
  almost 
  without 
  change 
  in 
  the 
  entire 
  

   work 
  thus 
  far. 
  This 
  is 
  convenient, 
  but 
  hardly 
  defensible. 
  In 
  the 
  two 
  

   difficult 
  genera 
  which 
  are 
  treated 
  in 
  this 
  part 
  Mr. 
  Husnot 
  has 
  reduced 
  a 
  

   number 
  of 
  species 
  to 
  the 
  rank 
  of 
  varieties. 
  

  

  OPEN 
  LETTERS. 
  

  

  Once 
  more 
  about 
  the 
  weeds. 
  

   While 
  not 
  nnminflfiil 
  nf 
  tliA 
  vinl.afanf;.,! 
  oiJ 
  tk. 
  

  

  country 
  have 
  rendered 
  me 
  in 
  the 
  study 
  of 
  our 
  weed 
  pests, 
  the 
  writer, 
  in 
  

   view 
  of 
  the 
  task 
  imposed 
  by 
  the 
  Biological 
  section 
  of 
  the 
  A. 
  A. 
  A. 
  8. 
  at 
  

   Its 
  ioronto 
  meeting, 
  namely, 
  the 
  prep 
  aration 
  of 
  a 
  paper 
  upon 
  " 
  The 
  Mi- 
  

  

  conKvoisiLT'*so*'^W^S,fR'°''i' 
  ? 
  v^T'"\P4'>r"f 
  «^ 
  flg'i'-es 
  des 
  mousses 
  de 
  Prance 
  et 
  des 
  

   im 
  6fr 
  8°. 
  pp. 
  220-256, 
  pi. 
  LXI-LXVm. 
  Cahan 
  (par 
  Athis. 
  Orne); 
  the 
  author, 
  

  

  