ONCIDIUM. 395 
thin. across. Sepals and petals nearly equal, }in. long, 
pale yellow, with purplish blotches; lip spreading, kidney- 
shaped, with a short, stalk-like claw, the edges wavy, and 
the colour pale yellow; crest large and prominent, two- 
lobed, smooth, shining dark purple; column short, with a 
pair of rounded wings. Introduced from Brazil in 1873. 
This species should be grown on a block of soft wood, and 
a little sphagnum should be placed about its roots. It 
likes plenty of moisture whilst growing, but should be 
rested fairly dry. A position near the glass in the Cattleya- 
house suits it best. 
Botanical Magazine, t. 6494. 
0. excavatum.—A very handsome plant, of large size 
and of easy culture. Its pseudo-bulbs are from gin. to 
sin. long, ovate-oblong, compressed, shining green. The 
leaves are in pairs on the tops of the pseudo-bulbs, and 
there are also several from the base of each; they are 
1}ft. long, 14in. broad, leathery and shining. The stout, 
branched scapes are from 3ft. to 5ft. long, and bear 
a great number of bright-coloured flowers, each rin. 
across; the sepals are smaller than the petals, and alter- 
nate with them; the lip is three-lobed, with several broken 
ridges near the base forming the crest. The colour of 
the whole flower is rich golden yellow, with a few dark 
cinnamon spots on each segment. Strong plants of this 
species have produced as many as 100 flowers on one 
scape. Being a robust grower, it likes plenty of pot- 
room, liberal supplies of water at the root, and an ordinary 
greenhouse temperature. It was introduced from Peru 
about 1839. Syn. O. aurosum. 
Fig. 91; Botanical Magazine, t. 5293. 
QO. flexuosum.—An old favourite, and one of the easiest 
of Oncidiums to cultivate. It has ovate, flattened, furrowed 
