Oncidium superbiens, is an evergreen plant, and belongs, according to Lindley 
to the section Microchila, which also includes O. macranthum, 0. serratum, 
O. axanthodon and several others. The foliage is about a foot long, the flower scapes 
proceed from the base of the newly-made bulbs, and are from two to three feet in 
length, including a lax panicle of about thirty flowers, the individual blooms being 
about three inches in diameter; the sepals are chocolate-brown in colour, tipped 
with yellow; the petals are smaller, cordate, oblong, recurved, with a shorter and 
broader claw, clear yellow in the apical half but barred with chocolate in the basal 
portion; the lip is small, blackish-purple, with a yellow crest. This Oncidium 
requires the same treatment as O. macranthum, and is best grown in pots in the 
Odontoglossum-house. Good drainage is requisite and a good-sized pot; in potting 
it should be placed well above the rim, as it is a strong free-growing plant, and 
its roots spread over the pots in which they are grown. It produces its long spikes 
a considerable time before its flowers are fully developed. From the great length of 
the spike it requires some sticks to support it when in bloom. The plants belonging 
to this section are distinct from the majority of Oncids, and are found to be most 
accommodating, as they may be grown in any house having a temperature of 45° to 
.50° in winter; they also require to be kept cool in summer, as they are found in 
the temperate regions of South America at great altitudes, where is not very warm 
at any time in the year. This species must be kept moist at the roots during 
its growing and flowering seasons, but when at rest it merely requires sutflicient 
water to keep its pseudo-bulbs in a plump condition. 
