﻿Mutations 
  in 
  Horticulture 
  619 
  

  

  Others 
  have 
  been 
  found 
  wild, 
  as 
  already 
  men- 
  

   tioned 
  in 
  a 
  former 
  lecture. 
  

  

  An 
  analogous 
  case 
  is 
  afforded 
  by 
  the 
  purple- 
  

   leaved 
  plums, 
  of 
  which 
  the 
  most 
  known 
  form 
  is 
  

   Prunus 
  Pissardi. 
  It 
  is 
  said 
  to 
  be 
  a 
  purple 
  va- 
  

   riety 
  of 
  Prunus 
  cerasifera, 
  and 
  was 
  introduced 
  

   at 
  the 
  close 
  of 
  the 
  seventies 
  from 
  Persia, 
  where 
  

   it 
  is 
  said 
  to 
  have 
  been 
  found 
  in 
  Tabris. 
  A 
  simi- 
  

   lar 
  variety 
  arose 
  independently 
  and 
  unex- 
  

   pectedly 
  in 
  the 
  nursery 
  of 
  Spath, 
  near 
  Berlin, 
  

   about 
  1880, 
  but 
  it 
  seems 
  to 
  differ 
  in 
  some 
  minor 
  

   points 
  from 
  the 
  Persian 
  prototype. 
  

  

  A 
  white 
  variety 
  of 
  Cyclamen 
  vernum 
  made 
  its 
  

   appearance 
  in 
  the 
  year 
  1836 
  in 
  Holland. 
  A 
  sin- 
  

   gle 
  individual 
  was 
  observed 
  for 
  the 
  first 
  time 
  

   among 
  a 
  large 
  lot 
  of 
  seedlings, 
  in 
  a 
  nursery 
  near 
  

   Haarlem. 
  It 
  yielded 
  a 
  satisfactory 
  amount 
  of 
  

   seed, 
  and 
  the 
  progeny 
  was 
  true 
  to 
  the 
  new 
  type. 
  

   Such 
  plants 
  propagate 
  slowly, 
  and 
  it 
  was 
  only 
  

   twenty-seven 
  years 
  later 
  (1863) 
  that 
  the 
  bulbs 
  

   were 
  offered 
  for 
  sale 
  by 
  the 
  Haarlem 
  firm 
  of 
  

   Krelage 
  & 
  Son. 
  The 
  price 
  of 
  each 
  bulb 
  was 
  

   $5.00 
  in 
  that 
  year, 
  but 
  soon 
  afterwards 
  was 
  re- 
  

   duced 
  to 
  $1.00 
  each, 
  which 
  was 
  about 
  thrice 
  the 
  

   ordinary 
  price 
  of 
  the 
  red 
  variety. 
  

  

  The 
  firm 
  of 
  Messrs. 
  Krelage 
  Son 
  has 
  

   brought 
  into 
  commerce 
  a 
  wide 
  range 
  of 
  new 
  

   bulb-varieties, 
  all 
  due 
  to 
  occasional 
  mutations, 
  

   some 
  by 
  seed 
  and 
  others 
  by 
  buds, 
  or 
  to 
  the 
  acci- 
  

  

  