384 ORCHIDS. 
and concave, }in. long, yellow, with purplish bands; 
petals rin. long, fiddle-shaped, wavy, two-lobed, and coloured 
deep golden yellow, with large blotches of chocolate-brown 
along the middle; lip spreading, nearly 2in. across, irregu- 
larly notched, suddenly contracted towards the base, where 
there are two ear-like lobes; colour bright yellow, with 
spots of orange-red about the base; crest formed of fleshy 
tubercles. No Oncidium is more effective than this when 
it is well managed, the flowers lasting a long while, and 
being very bright in colour. It should be grown on teak 
blocks or in baskets, in a mixture of peat-fibre and 
sphagnum, and placed in the cool or Odontoglossum 
house, where it should have plenty of light and moisture. 
It blossoms in May. A native of Brazil; introduced 
in 1866. 
Botanical Magazine, t. 5725. 
O. Mantinii, a recently-introduced plant, is almost 
identical with O. Marshallianum, except in the colour of 
its flowers and the size of the petals, which are rin. long 
and 1in. broad; they are coloured deep chestnut, with a 
broad margin of bright yellow, whilst the lip is yellow, 
with spots of red scattered over it. Probably this plant is 
a variety of O. Marshallianum. 
0. ornithorhynchum.—This is a dwarf, compact, free- 
flowering plant, of easy culture. It has smooth, ovate, 
compressed pseudo-bulbs, 2in. long, each bearing a pair of 
grass-like leaves t1oin. long. The flower-scapes are thin 
and arched, about 1ft. long, branched, and many-flowered. 
The flowers are barely 1in. across; sepals and petals small, 
oblong, wavy; lip three-lobed or fiddle-shaped, the lateral 
lobes small and notched, the middle lobe much the largest, 
split at the apex, and bearing a conspicuous, warty, five- 
ridged crest; column short, with a long, curved rostellum. 
