54 THE ORCHID REVIEW. (FEBRUARY, 1915. 
handsome flowers, which remain fresh for many weeks, their value for 
cutting and decorative purposes being highly appreciated. To prolong 
their flowering season it is a good plan to grow plants both in the 
Intermediate house and in the Cool house, for by so doing an almost 
continuous display may be obtained from November till late in the spring. 
These cooler-growing Cypripediums include such well-known varieties as 
C. Charlesworthii, C. Leeanum, C. villosum, C. Boxallii, C. Hera, C. ‘H. 
Euryades, C. Arthurianum, C. Actzus, C. A. langleyense, C. purpuratum, 
and others, far too numerous to mention in the space allowed here; 
and the proper time for repotting them is at the end of the season of 
flowering. But unless the compost is sour or decayed, or a larger pot 
needed, annual repotting is not necessary. In repotting the plants do not 
raise them above the rim of the pot, but keep the surface of the compost 
just below it. The pots, if large, should be about half full of drainage, but 
small sizes will need less, and a compost should be used of rough fibry 
peat or osmunda fibre, good fibrous yellow loam and sphagnum moss, in 
equal parts, and mixed well together, with a moderate quantity of broken 
crocks to keep the whole porous. After being repotted keep the surface of 
the soil just moist, and when well rooted into the new compost the plants 
will require a plentiful supply of water all the year round. 
CALANTHES of the evergreen section, as C. veratrifolia, Masuca, 
Dominii, japonica, curculigoides, and natalensis, now in full growth, 
must have liberal and frequent supplies of water, as they are strong, free- 
rooting terrestrial plants, and when they become pot-bound an occasional 
watering with weak liquid manure is beneficial tothem. The members of 
this family are frequently troubled with a species of brown scale insect, 
which must be kept under by brush and sponge. 
SOBRALIAS.—Opportunity should now be taken to remove all useless 
stems, cutting them down to the roots, thus making more room for the new 
growths, which are now making considerable progress, and should be 
tied out at equal distances apart so that plenty of light and air may pass 
freely between them. All strong, well-rooted plants of Sobralias will need 
Copious waterings for many months to come. 
MASDEVALLIAS.—Among the numerous species of this genus the pure 
white M..tovarensis is a favourite. 
growth, and the present is a suitable t 
grown specimens, or such as have become bare of leaves towards the centre. 
The pots should be about three parts filled with clean crocks, and over 
the drainage a thin layer of rough, fresh, 
The plant will now be starting into 
ime for repotting or breaking up over- 
chopped up rather finely and be well mix 
ed together. I have seen plants 
thrive equally well when potted in wel 
l-drained osmunda fibre only. 
