SLROUCTURE AND PECULIARITIES. 21 
scent of Stanhopea grandiflora to that of a chemist’s shop, 
that of Bulbophyllum cocoinum to cocoa-nut milk, of 
Oncidium ornithorhynchum to fresh hay, of Acropera Lod- 
digesii to wallflowers, of Maxillaria atropurpurea to violets, 
of Aérides odoratum to pomatum, of Epidendrum anisatum 
to aniseed, of E. umbellatum to angelica, of Maxillaria 
crassifolia to noyeau, of M. aromatica to cinnamon, of 
Gongora atropurpurea to allspice, of Burlingtonia candida 
to citron, of Dendrobium moschatum to musk, and of 
Cycnoches Loddigesii to honey. Bulbophyllum  Beccari 
and Masdevallia vilifera have a disgustingly foetid odour. 
The odour of some—as of Epidendrum nocturnum and 
Brassavola nodosa—is only perceptible at night. Among 
our British Orchids there are several—such as the Butterfly 
Orchis (Habenaria chlorantha) and the Sweet-scented 
Orchis (Gymnadenia conopsea)—the fragrance of which is 
greatly intensified towards evening. Some species give 
out different scents at different times, such as Dendrobium 
nobile, which smells like grass in the evening, like honey 
at noon, and has in the morning a faint odour of prim- 
roses ; while some, such as one or two species of Epiden- 
drum, are fragrant in the morning and scentless at night. 
In others the fragrance is perceptible only in the evening. 
Our common British Purple Orchis (O. mascula) is remark- 
ably variable in this respect—while faintly fragrant during 
the day, it is at night often so unpleasant in odour as to 
be unbearable in a room; but this varies much in different 
specimens. This list does not comprise more than a small 
fraction of the number of Orchids which have powerful 
odours. Indeed, it might almost be said that scentless 
Orchids are the exception. 
SSE EES 
