34 THE ORCHID REVIEW. (FEBRUARY, 19TO. 
true Orchis pretty closely, and his son visited a bank where the plant grew 
plentifully, and caught four species of moths with numerous pollinia 
attached to their proboscides. The two so-called Butterfly Orchises, 
Platanthera bifolia and chlorantha, are also fertilised by moths, of which 
numerous specimens have been captured with the pollinia attached to their 
heads. Prof. Asa Gray has described the structure of several North 
American species, and it is evident that the flowers are fertilised in the 
same way. 
The subtribe Habenariez differs from Gymnadeniee# in its profound 
modification of the column. The ordinary concave stigma situated under 
the rostellum is replaced by two more or less lateral stigmas; which are 
often extended in front as long clavate processes. The rostellum is three- 
lobed, the side lobes being extended into elongated channels, in which lie 
the caudicles of the pollinia. This arrangement is well seen in the remark- 
able genera Bonatea, to be described presently. The group contains about 
seven or eight genera, of which Habenaria is by far the largest, as it 
contains upwards of 400 species. It is found almost throughout the warm 
and temperate regions of the globe, with the exception of very dry countries, 
and in these Orchids are invariably rare. 
The flowers of Habenaria are very complex in structure, the long side 
lobes of the rostellum and clavate stigmatic processes giving the column a 
very unusual appearance. The petals are often divided into two lobes, the 
upper half helping the dorsal sepal to form a hood over the column, while 
the lower halves are elongated, and look like an additional pair of lobes to 
the lip, which itself is often broken up into three narrow lobes,’and has an 
elongated spur at the base. The flowers are, generally green or white in 
colour, but in H. rhodochila the lip is orange-red, and in H. militaris 
scarlet. In H. carnea the flowers are either pink or white, and the leaves 
are prettily variegated, the latter character being also seen in H. militaris. 
These three beautiful species, with a few others, are occasionally seen in 
cultivation. 
Peristylus is a small, mostly Asiatic genus, and is less highly specialised 
in structure, the small green flowers being borne in dense spikes. 
Stenoglottis has three African species, and is readily distinguished 
from Habenaria by its spurless lip and pink flowers, which are not unlike 
those of an Orchis in appearance, but the two clavate stigmas show that it 
belongs to this group. S. longifolia is well known in cultivation, and S. 
fimbriata, which has prettily-spotted leaves, is also sometimes met with. 
Cynorchis has upwards of thirty species, mostly Mascarene, with one in 
Natal, but two or three Chinese species have been recently added to the 
genus. C. purpurascens, C. Lowiana and C. compacta are well known in 
cultivation. The flowers are mostly purple, but in C. compacta they are 
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