August  14,  1902. 
JOURNAL  OF  HORTICULTURE  AND  COTTAGE  GARDENER. 
145 
Laelio-Cattleya  Canhamiana  alba. 
For  size  and  handsome  appearance  this  is  a  most  commend-  j 
able  Orchid.  Messrs.  Hugh  Low  and  Co.  have  staged  plants 
of  it  frequently  and  well  at  Drill  Hall  meetings  during  the  j 
past  season,  and  both  Messrs.  Veitch,  Ltd.,  and  Sander  and 
Sons  also  include  it.  Coining  as  a  hybrid  from  Lselia  purpu-  | 
As  a  rule  the  smaller  members  of  the  genus  are  the 
first  to  need  attention,  O  Cervantesi,  O.  Oerstedi,  0.  Rossi, 
and  similar  species,  following  cn  with  O.  crispum, 
O.  Halli,  O.  triumphans,  and  their  near  relations.  The 
first-named  species  are  best  grown  in  small  pans  or  baskets 
for  suspending,  and  should  they  now  be  in  unsuitable  recep¬ 
tacles,  advantage  may  be  taken  of  the  time  to  make  the 
necessary  correction.  Plants  cf  larger  growing  sorts  that  are 
dcing  well  in  small  pots  may  be  shifted  to  those  cf  larger  size, 
and  other  plants  that  do  not  usually  need  repotting  may  have 
a  little  of  the  surface  compost  removed  and  replaced  by  new, 
in  the  form  cf  surface  dressings. 
It  will  be  noted  that  when  a  plant,  say,  of  0.  crispum  is 
doing  well,  and  has  fdled  a  3in  or  60-sized  pot,  that  it  is  not 
wise  to  give  an  intermediate  shift  to  the  -tin  size,  but  place 
it  at  once  in  a  48  or  Sin,  the  greater  freedom  for  the  roots 
Laelio=Cattleya 
rata  and  Cattleya  Mossise,  it  has  two  of  the  best  known  and 
most  prized  species  in  its  constitution,  and  in  habit  comes 
near  to  L.  purpurata.  The  sepals  and  petals  of  the  variety 
alba  are  white,  the  lip  dark  purple,  and  the  throat  veined  with 
brown  and  gold. 
The  Week’s  Cultural  Notes. 
The  shortening  days  remind  one  that  it  will  soon  be  time  to 
give  attention  to  the  Odontoglossums  and  other  inmates  cf 
the  cool  house.  A  stock  of  pots,  labels,  and  other  requisites 
should  be  got  ready,  so  that  the  work  may  progress  quickly 
when  once  started.  "  The  plants  should  be  given  a  look  round, 
and  all  that  are  ready  for  repotting  selected.  The  proper 
time  for  the  operation  is  when  the  new- growths  are  about 
half  formed,  as  it  is  just  then  that  new  roots  are  produced, 
these  new  roots  serving  to  re-establish  the  plant  in  the  new 
compost,  that  helps  in  turn  to  swell  up  fine  young  pseudo-bulbs. 
Canhamiana  alba. 
|  serving  to  carry  more  nutriment,  and  incidentally  the  plant 
I  is  not  so  liable  to  injury  as  when  given  a  small  shift.  Natu¬ 
rally,  when  giving  this  large  shift  a  great  deal  of  care  is 
necessary  with  the  drainage,  but  it  is  advisable,  none  the  less. 
A <rain,  no  one  of  any  experience  would  think  of  shifting  a 
plant  that  was  not  doing  well  into  a  large  body  of  new 
material.  Only  the  robust  specimens  can  be  so  treated. 
There  is  not  space  here  to  go  fully  into  the  details  or 
potting,  but  as  this  was  given  rather  recently  when  speaking 
of  the”o-enus  as  a  whole,  those  readers  who  seek  instruction  on 
this  point  may  perhaps,  look  up  their  back  numbers  "ith 
advantage.  It  is  not  wise  to  give  very  heavy  supplies  ot 
moisture  immediately  after  repotting,  but  as  new  compost 
dries  more  rapidly  than  old,  fairly  frequent  attention  will  bo 
needed  to  keep  the  sphagnum  moss  alive  and  growing.  Light 
sprayings  of  tepid  water  from  the  syringe  are  useful .  and  the  rose 
cf  the  syringe  should  be  used  when  watering  the  roots. — H.  K.  K. 
