CHAP PER WU XV.LII. 
ZYGOPETALUM. 
IN gardens this name is confined to about a dozen species, 
characterised by stout pseudo-bulbs, strap-shaped, leathery 
leaves, more or less erect, and flower-scapes which spring 
from the base of the matured pseudo-bulbs and bear from 
four to eight flowers. The type-plant of these is Z. Mackaii, 
on which the genus was founded in 1827. ‘The sepals and 
petals are almost alike in size, form, and colour; they are 
arranged on the same plane, are partly joined to each 
other at the base, and are directed upwards above the level 
of the centre of the flower, almost fan-like. The lip is the 
most striking part of the flower, being large, spreading, flat, 
almost leathery in texture, and brightly coloured; the crest 
or disc is thick and fleshy, usually furrowed or toothed, 
sometimes not unlike the old-fashioned ruff. All the 
species flower in the winter season. According to the 
“Genera Plantarum,’ there are forty species of Zygo- 
petalum, but these include the plants known in gardens 
under the following names: Bollea, Huntleya, Pro- 
menza, and Warscewiczella, as well as those to which 
we here, for the sake of convenience, have limited the 
name Zygopetalum. The large, spreading, usually purple 
labellum, with its prominent, fleshy, ruff-like crest, and the 
short, fleshy column, are characters which, in conjunction 
