the broad petals and lip give the rest of the flower a very different appearance. 
The spur, which is composed of a basal extension of the lip together with the 
adnate bases of the latéral sepals, is one and a quarter inches long. It is a very 
interesting addition to the genus. 
R. A. Rolfe. 
* 
* * 
The cultivation of Trichocentrums in general is often considered diffîcult, 
but this we think is erroneous, and in this respect Trichocentrum triquetrum is in 
no way different from other species of the genus. They require a warm tempe- 
rature and plenty of light, and therefore should be cultivated in a warm house, 
suspended near the glass, and with little shade except during the hottest time 
of the day. They require plenty of water during their period of growth, but 
when in flower they should be kept somewhat drier, like most other Orchids. 
They may be cultivated in pots or baskets, but the latter are undoubtedly préfé¬ 
rable, because more convenient for suspending the plants near the glass. They 
may also be placed in pots, provided they are not very large, and the pots placed 
in hanging baskets. 
The compost should be formed of equal quantifies of sphagnum and fibrous 
peat, chopped into pièces of an inch or an inch and a half long, and well mixed. 
A layer of sphagnum must be placed in the bottom of the pan, and on the 
surface another layer of short pièces and tufts. 
It is a good plan to water the plants from time to time with water to which 
a very small quantity of liquid manure made from cow-dung has been added, 
and this be continued during the may months of active growth. The liquid 
should not be allowed to touch the leaves, but should be applied to the compost 
near the edges of the pans. 
As soon as they commence to flower, they may be removed without incon- 
venience to a cooler house, or even to a dwelling room. 
