34 
THE FLORIST S JOURNAL. 
45° to 60° Fahrenheit; but I recommend 50° and 55° as the 
highest, unless it is required to provide a supply for some par¬ 
ticular day. Where pits are heated by hot water, it is an easy 
matter to steam them, which is highly beneficial when the 
plants are in a state of vegetation. Thus managed, the plants 
require but little water, particularly in the winter months; but 
it must be borne in mind that when it is required and applied, 
it must be of the same temperature as the pit in which the 
plants are growing. Where a general succession is wanted, 
this method will be found to answer; a fresh plantation must, 
however, be made about every twelve or eighteen days. It is 
not necessary in forcing Asparagus, that it should have bottom 
heat ; but where a small quantity is required, it is often forced 
on dung beds, and in such cases I would advise the grower to 
be cautious against a strong bottom heat, which, accompanied 
by the steam from the dung, is injurious to the plants when in 
a growing state. Where it is wanted, even in small quantities, 
I strongly recommend the frame to be placed on brickwork, 
with pigeon-holes in it, as recommended by M‘Phail; and the 
bottom may be covered with slate or bricks, and thus the steam 
will entirely be prevented from getting among the plants. If 
the cultivator of Asparagus will attend to the above hints, he 
will find the result will give entire satisfaction,— the whole 
being the result of experience. 
July 1 3 th. 
LIST OF ORCHIDEiE. 
(Continued from p. 19.) 
269. Oncidium deltoideum (from the Greek delta, the lip being of a trian¬ 
gular form). Plant pseudo-bulbous ; bulbs 3 inches long, of a pale green ; 
leaves in pairs. 18 inches long, and a quarter of an inch broad ; flower-spike 
3 feet long, and slender; the sepals and petals yellow, with a small spot of 
brown in the centre of each ; labellum yellow, with a blotch of brown. 
This species requires pot cultivation in a mixture of turfy peat, a little sphag¬ 
num, and small potsherds, and a good drainage. Water to be given, but 
moderately, in a temperature varying from 65° to 70°. — Native of Peru. 
270. Oncidium incurvum (from the floral organs being curved backwards). 
Plant pseudo-bulbous; bulbs a little grooved, 3 inches long, inclosed in two 
pairs of leaflets ; leaves in pairs, 16 inches long, and one inch broad; flower- 
spike 2 feet long, and branched ; the sepals and petals of the flowers white, 
intermixed with deep lilac; column erect, white; ears small; labellum 
