ORCHIDEOUS EPIPHYTES. 
303 
ORCHIDEOUS EPIPHYTES. 
|as regards culture, between Pose 
the Continent, they are kept in a 
cellar. 
Orance Tuorn.—Citriobdtus.— 
Spinous shrubs, belonging to Pitto- 
sporacee, natives of Port Jackson 
and other parts of Australia, which, 
from bearing small orange-coloured 
fruit, are called Orange Thorn by 
the colonists. 
Orance Tree.—See Ci'rrus. 
ORCHIDACEH, TERRESTRIAL.—The | 
terrestrial Orchidacee are, as their | 
names import, those plants belong- | 
ing to this extensive order which 
grow in the ground, in contradis- 
tinction to the epiphytes or those 
which grow with their roots exposed | 
to the air. The terrestrial Orchi- 
dew are of four kinds, viz., those 
from the tropics, which require a 
stove in England; those from the 
Cape of Good Hope, which require 
a greenhouse ; those from the South 
of Europe, which only need a slight 
protection during winter; and the 
hardy kinds, most of which are 
natives of Great Britain. The stove 
species require nearly the same 
treatment as the epiphytes (see 
Orxcnipeous Epripnytes); and the 
greenhouse species only differ from 
other greenhouse plants in requir- 
ing particular care to be paid to 
their drainage. For this purpose, | 
the pots should be filled one quar- 
ter of their depth with broken pot- 
sherds or cinders, and the soil should 
plants and the terrestrial Orchidee 
of the tropics, as several of the 
Epiphytes may be grown to great 
perfection in pots; and _ others, 
though in a state of cultivation they 
can only be grown well on branches 
of trees, are found growing natural- 
ly on exposed rocks. All the true 
Epiphytes, that in their wild state 
are found with their roots hanging 
down in the air, grow in dense for- 
ests, where shade, moisture, and 
‘excessive heat, seem essential to 
their existence ; and these plants 
in a state of culture should general- 
ly be grown in baskets, (such as 
those figured in p. 208 and p. 209,) 
or in husks ef cocoa-nuts, half filled 
with moss, or tied on pieces of wood, 
hung up from the rafters of a damp 
stove, and in the shade. This rule, 
however, though apparently so rea- 
sonable, is not without its exceptions 
in practice; probably because, as 
it is impossible to imitate the natu- 
ral climate of the plants exactly, 
their wants are changed by the dif- 
ferent situation in which they are 
placed. Thus the East India Den- 
drobiums and Epidendrums, both of 
which in their natural state are 
generally found on the branches of 
trees, in a state of culture, thrive 
best petted in turfy peat or chop- 
ped moss, left sufficiently loose to 
allow the points of the roots to 
consist of turfy peat broken into| protrude oceasionally, and hang 
pieces, and sand mixed with about | down over the sides of the pot. 
a third of vegetable mould. The| The flowers of the Dendrobiums 
half-hardy and hardy kinds may be | are generally produced in long pen- 
grown either in pots or in the open 
ground.—Scee O’rcuis. 
OrcuipEous Epiprytres. — The 
plants thus designated should, pro- 
perly speaking, only be those which 
in their native countries are found 
hanging from the branches of trees, 
with their roots exposed to the air; 
as these only can be called air- 
plants. It is, however, very diffi- 
cult to draw a line of demarcation, 
dent raceines; but those of the 
Epidendrums are erect, like those 
of the Oncidiums. Most of the 
East Indian%pecies should always 
be grown on wood ; particularly 
Renanthera coccinea, and all the 
kinds of Vénda and Sarcénthus; 
the East Indian Dendrobiums, and 
the different species of E\ria. The 
species of the genera Aérides and 
Celégyne, however, theugh both 
