ONCIDIUM. 377 
and be kept constantly moist. It grows and flowers regu- 
larly under cool treatment. Introduced from Brazil in 1818. 
Botanical Magazine, t. 2203. 
There are several varieties of O. flexuosum, which differ 
from the type here described in being larger-flowered or 
more copiously spotted. 
0. Forbesii.—This is one of the most ornamental of all 
Oncidiums, but it is unfortunately rare in cultivation. 
The somewhat similar species O. crispum is often grown 
under this name. O. Forbesii has oval, flattened, furrowed 
pseudo-bulbs, with brownish basal sheaths and leathery, 
dark green, strap-shaped leaves about gin. long. The 
scape is about ift. long, branched, and crowded with 
flowers each 2in. across; sepals ovate, 4in. long; petals 
1in. long, tongue-shaped, wavy, with a stalk-like base; 
lip three-lobed, 1in. long, the side lobes small, the other 
spreading, fan-shaped, and wavy. The colour of the whole 
flower is rich, glossy, reddish brown, with an_ irregular 
margin of yellow; the tubercled crest is spotted with red. 
Introduced from Brazil to the Duke of Bedford’s collection 
at Woburn in 1837, and named in compliment to his gar- 
dener, Mr. Forbes, who was one of the most skilful Orchid- 
growers of his day. It should be fastened to a block of 
soft wood, and be kept in a warm greenhouse. The 
blossoms are produced in autumn, and remain fresh a long 
time. ‘‘This species is far more variable than the good 
old O. crispum, and even than O. pratextum” (Rchb. f.). 
Botanical Magazine, t. 3605. 
0. Gardnerii—A handsome species, with moderately 
large flowers, very near O. Forbesii and O. curtum, from 
which it differs in the form and crest of the lip, and in 
having very small column-wings. It has oblong-ovate, 
furrowed pseudo-bulbs 2in. to gin. long, and dark green, 
