was introduced by the late M' J. G. Vxrrcn, in 1865. The variety candidum has 
white flowers with a purple blotch on each side of the crest of the lip. The 
variety albo-marginatum is a recent introduction. It flowered with Messrs Linprn, 
L’HorticuLTurE INTERNATIONALE, Brussels, during December last. It owes its 
distinctive character to the absence of colour near the margins of the segments. 
The petals are somewhat flaked with white, chiefly near the circumference, where 
it forms an irregular white margin. The sepals and lip have a trace of the same 
peculiarity, though less distinct than in the case of the petals. The species flowers 
during the autumn and winter, from September to February, and even later. 
Dendrobium bigibbum is the nearest known ally of D. Phalaenopsis, but is 
always readily distinguished by its smaller flowers, with more obtuse segments, 
and by its very distinct white oblong papillose crest. They belong to a small group 
of species whose peculiarity is the possession of a kind of double spur, — that is 
the ordinary pouch of the genus Dendrobium is prolonged behind into a short 
conical spur, — to which peculiarity the present species owes its name. 
' R. A. Roure. 
JOE CULTURE, OF PHALAENOPSIS. 
(Continued from page 6.) 
We have spoken generally, but P. amabilis, P. grandiflora, P. Stuartiana 
and P. Schilleriana are particularly the kinds which are the most remarkable, 
and the most popular. Another species, P. Lowi (of which the Lindenia gave a 
representation in a recent number) deserves special attention, because of a 
peculiarity which is the cause of much anxiety to cultivators. It loses its leaves 
every year after flowering, and many gardeners, thinking the plants dead, might 
throw them away when in this condition, which would be an error, as we think 
it advisable to point out. 
It is at the end of the resting period, before the return of the season of 
growth, when they present the most favourable condition for the process of 
re-potting. The roots, which during active growth are fixed against the sides 
of the basket, and cling to the bars, relax somewhat, and become disengaged. 
At the end of this period they can be detached very easily, and they may then 
be re-potted without fear of injuring them. 
The general re-potting may be done when the plant has filled its basket, 
and requires space, we must therefore take a basket larger than the preceding 
one, but not too large. Having chosen the longest pieces of the fibre, we place 
it first in the basket, without drainage. It is advantageous to roll it in little balls; 
the air circulates better in this way, and the drainage keeps in better condition. 
(To be continued on p. 16.) 
ve 
