144 ORCHIDS. 
wetting the foliage, as the centres of the growths are liable 
to rot if water is allowed to remain there. The leaves 
drop off in autumn, when the plants should be removed 
to drier quarters, and water almost entirely withheld until 
growth recommences. 
C. aureum.—A handsome species, bearing numerous 
large, yellow flowers, closely arranged on a drooping raceme. 
The sepals and petals are lance-shaped, and dotted with 
purple, the latter being curved in at the tips. The lip is 
small and much divided, and the gracefully-curving column 
is marked with purple dots. Introduced from Central 
America in 1851. 
C. chlorochilon—A striking species, and one of the 
largest-flowered, with fleshy pseudo-bulbs rft. high, and 
ribbed leaves of the same length. The flowers, which are 
borne on curving scapes from 8in. to 12in. long, are fragrant, 
and measure 5in. across. The sepals and petals are 
yellowish green, and the lip (in the plants we have seen) 
is ivory-white, with a bronzy-green blotch in the centre; 
in some forms this blotch is bright yellow. The column 
is 2in. long, and curved, whilst at the apex, where the pollen- 
masses are inserted, it is swollen into a roundish knob. This 
species is of easy culture, and flowers freely about June 
or July. Some varieties produce only three flowers on a 
scape, whilst in others we have seen as many as ten. A 
native of Demerara; introduced in 1838. 
Plate. 
C. ventricosum.—This produces several—usually two— 
racemes of flowers from the axils of the upper leaves on 
the last matured pseudo-bulbs; each raceme bears five 
flowers, and each flower has lanceolate sepals, the petals 
being curved downwards, and light green in colour. 
