copious water in Summer, and should not be allowed to become dry at any time. 
Plenty of light is desirable, the plant doing best when grown close to the glass. 
Flowers in Summer and lasts about three weeks. 
Var. majus.—Has larger flower than the type. 
ONCIDIUM BARBATUM. Native of Brazil. 
An attractive species with roundish, compressed, ovoid pseudobulbs with a single 
narrow, oblong leaf about 2 or 3 inches long. The flower spike is slender and 
arching, and carries several flowers, each from 1} to 2 inches across. Sepals narrow 
and pointed with wavy edges, pale yellow with bars of chestnut-brown, the 
laterals being joined at the base. Petals oblong, waved at the edges, golden-yellow 
with bright red streaks at the base. Base of lip triangular, yellow, the disk fim- 
briated and spotted with brown. Side lobes bright golden-yellow, the front lobe 
diamond-shaped and bright yellow. Flowers in Autumn. Treatment as for O. 
ampliatum. 
ONCIDIUM CHEIROPHORUM. Native of Colombia. 
This small growing species is a little gem. The pseudobulbs are about an inch 
long, elliptoid in shape, very compressed, smooth, shiny and pale green. The 
leaves are up to 5 inches long, narrow, grassy and light green. The very slender 
scape grows to 9 inches long and is erect and branched, and grows from the 
matured bulbs (most frequently two-year-old). It bears a large number of small 
yellow flowers about half-an-inch in diameter. Sepals and petals round, reflexed 
and concave. Lip three-lobed and larger than the segments. In colour the flower 
is a uniform bright yellow. It is very fragrant, a single spike of the flowers 
being sufficient to fill a large room with perfume. As I write a small plant of 
this species is in the room and the air is filled with its sweetness. There are 
many more striking Oncidiums, but none more charming than cheirophorum. 
Flowers in Winter and lasts about five weeks in perfection. It is a very free grow- 
ing species, and I find it does best in a sunny bushhouse, with copious moisture 
throughout the Summer but much less in Winter, though, except when in bloom, 
it should not be allowed to become dry. 
ONCIDIUM CONCOLOR. Native of Brazil. 
An attractive species with oval, flattened, furrowed pseudobulbs, sheathed at the 
base and bearing two strap-shaped leaves, pointed at the apex bright green in 
colour, and from 6 to 9 inches long. Flower scape arched or pendent, many- 
flowered, each being 14 inches wide. Sepals and petals pure yellow. The large 
lip is flat and is yellow with two raised ridges at the base. Cool treatment as for 
O. ampliatum. Flowers in late Spring or early Summer. 
ONCIDIUM CORNIGERUM. Native of Brazil. 
An easily grown species with furrowed, oblong pseudobulbs about 3 inches tall 
and having a single leaf. This is broad and ovate, about 4 inches long, and thick 
and fleshy in substance. Flower spike thin, up to 18 inches long, branched and 
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