CHAP TER XVI, 
BULBOPMYLLUM. 
COMPARATIVELY few of the 150 described species of this 
genus find favour with Orchid- growers. Those here 
described are in cultivation and are either pretty or 
deserving of notice on account of the singular structure of 
their flowers. The rhizome is stout and creeping, and 
usually the pseudo-bulbs are small and roundish, bearing 
one or two stiff, leathery leaves on the top. The flowers 
are chiefly remarkable in the lip, which is jointed and 
movable, a very slight touch being sufficient to produce an 
oscillatory motion. In some instances, a dense tuft of hairs 
occurs at the point of the lip, and here the movement is 
started by the slightest breath of air. The genus is also 
interesting as containing, on the one hand, one of the most 
gigantic of Orchids—B. Beccarii—and, on the other, one 
of the most minute—B. pygmzum, a native of New Zealand. 
Cu/ture.—The species enumerated below are all natives of 
the tropics, and require a warm, moist atmosphere when 
growing; even when at rest it is not advisable to allow them 
to become quite dry. They thrive on blocks of wood, or, 
better still, on soft fern-stem, with a little sphagnum about 
the roots, and are found to succeed best when suspended 
near the glass. 
