410 ORCHIDS, 
A variety is in cultivation with flowers exactly resembling 
those of the type, but with unspotted leaves. 
P. tuberculosus.—This species is very distinct from its 
allies, and is one of the most beautiful Orchids introduced 
in recent years. Its small, slender pseudo-bulbs spring 
from a rhizome-like stem, which emits roots freely. The 
leaves are from 6in. to gin. long. The flowers are borne 
= 
Fig. 100. Flower of Phaius tuberculosus 
(nat. size). 
on erect spikes, and are each 2tin. in diameter, with 
pure white sepals and petals, the latter overlapping the 
slightly narrower sepals. The beautiful lip is three- 
lobed; the lateral lobes are yellow, almost covered 
with dull brownish-crimson spots, and arched over the 
slender, curved column; the central lobe is smaller and 
roundish, divided at the apex, wavy, and white, spotted with 
