NovemixT, 1912 
THI-: ORCHID WORLD. 
35 
white dorsal of Spicerianum, the pecuhar 
shape of villosum, and the well-known nature 
of insigne, but it would be utterly impossible 
for these experts to corectly determine under 
which of the 24 different methods it had been 
produced, and, consequently, under which 
name it should be placed. The one matter 
under the suggested new system which they 
would be required to settle is, does this hybrid 
give indications, more or less, that insigne, 
villosum, and Spicerianum are contained in 
the parentage? If it does, and no additional 
species are visible, then it m.ust be named 
Cypripedium aureum. 
The propagation of Odontoglossums by means of advenlilious growths. 
THE PROPAGATION OF ORCHIDS. 
EVERYONE is well acquainted with the 
ordinary method of Orchid propaga- 
tion. The rhizome, or stem connect- 
ing the bulbs, has only to be severed, and the 
older part, so long as healthy buds remain, in 
due course commences to grow. The chief 
factors required to ensure success are division 
of the plant at a time of year when normal 
growth commences, and due care taken that 
sufficient nutritive material to sustain the new 
growth until root action commences is con- 
tained in each separate division of the plant. 
One or two healthy plump bulbs are usually 
sufficient for this purpose, but in the case of 
shrivelled and older bulbs a larger number 
will be required. 
Propagation by other means is most readily 
effected in Dendrobiums, for the nature of 
their many '' eyed " stems allows a large 
number of young plants to be produced at a 
comparatively rapid rate. When the plants at 
the finish of their growing season are kept in 
a warm and moist atmosphere insufficient 
ripening of the flower buds occurs, and many 
