338 ORCHIDS. 
deeply three-lobed, the lower lobe being broad and heart- 
shaped. This species was introduced from Mexico in 1847. 
Syn. O. membranaceum. 
Fig. 79; Botanical Magazine, t. 4923. 
Var. decorum.—Flowers larger; segments broader, streaks 
broader and shorter, and coloured purple instead of red. 
Williams’ Orchid Album, vi., t. 251. 
Var. punctatissimum.—Flowers spotted all over with rose. 
0. cirrhosum (or cirrosum).—A graceful and pretty 
species, with elongated, compressed pseudo-bulbs, 2in. to 
gin. in length, bearing two leaves about rft. long. Flowers 
4in. across, produced in profusion on a long, arching, 
branched spike; sepals narrow, with long, flexuous, tail- 
like ends; petals a little broader at the base; lip three- 
lobed, the side lobes toothed, the middle one narrow, 
recurved, and tail-like; colour of all the parts milk-white, 
with spots of maroon scattered over them; crest yellow, 
with radiating red lines. The flowers appear in April 
and May. Introduced from Ecuador in 1875. This species 
thrives best when grown in the cool end of the Cattleya- 
house. It has the bad habit of sometimes developing 
vrey stout spikes, with only very few flowers upon them. 
When such spikes show themselves, it is best to cut them 
off, and save the vigour which would otherwise be wasted 
on an almost barren spike. 
Plate (for which we are indebted to Messrs. Veitch and 
Sons); Botanical Magazine, t. 6317. 
0. citrosmum.—One of the most attractive of cool 
Orchids, and easily kept in health if grown at the warmer 
end of the cool-house, or along with the Cattleyas. It 
requires little shading even in summer, and after its new 
pseudo-bulbs have ripened it should be kept quite dry till 
the new flower-scapes are visible in the apex of the new 
