368 ORCHIDS. 
the whole flower is white, tinted with purplish rose. 
Botanically, this is one of the most interesting of Onci- 
diums; it is also sufficiently ornamental to be included in 
good collections. It thrives under cool treatment, and 
should never be rested. Introduced from Mexico in 1843. 
Fig. 87; Botanical Magazine, t. 5546 (as Palumbina 
candida). 
0. cheirophorum.—A charming little plant, with small, 
sweet-scented flowers, on elegant scapes. The pseudo- 
bulbs are rin. long, ellipsoid, compressed, smooth, wrinkled 
when old. Leaves about 5in. long, narrow, grass-like, bright 
green. Scape very slender, 6in. to gin. long, freely branched, 
and crowded with bright yellow flowers, each less than $in. 
across; sepals and petals nearly equal, almost round, 
reflexed, concave; lip much larger than the other parts, 
three-lobed, with a central callus of irregular form; column 
thick, conspicuously winged. This is one of the most 
popular of the small-flowered Oncidiums. It thrives in a 
cool, moist house, such as suits Odontoglossum crispum. 
Small pans filled with peat-fibre, sphagnum, and crocks, 
suit it best, and it should be hung close to the roof-glass. 
It is a native of New Granada, whence it was introduced 
about 1856. It blossoms in December and January. 
Botanical Magazine, t. 6278. 
0. concolor.—One of the most attractive of yellow- 
flowered cool-house Orchids, its graceful, pendent racemes 
of bright-coloured flowers being particularly ornamental. 
The pseudo-bulbs are 1tin. long, oval, flattened, furrowed, 
sheathed at the base, and each bearing a pair of strap- 
shaped, pointed, bright green leaves, 6in. to gin. long. 
The flower-scape is ift. or more in length, arched or 
pendent, and bears numerous flowers, each nearly 2in. 
across, and of a pure canary-yellow colour; upper sepal 
