494 orchid-geower's manual. 



its blossoms contrasting well with the varied hues of other 

 Orchids. It is best grown in the cool house, in a basket or 

 on a block, as fully exposed to the light as possible. It 

 blooms in April and May. — Brazil. 



'FlG.—Bot. Mag., t. 5725 ; Floral Mag., 2 ser., t. 285 ; Gartenflora, t, 979. 



0. metallicum, Echh. /. — A very distinct species, the 

 flowers of which are of a rich chestnut brown with a fine 

 metaUic hue, the borders of the short broad ovate upper sepal 

 and the smaller petals blotched with rich yellow, and the lip 

 pandurate with a triangular projection on each side at the 

 base, contracted in the centre, and with a hastate oblong 

 obtuse front lobe. — New Grenada. 



0. monacMcuin, Bchh. /.—This is a very curious and dis- 

 tinct species allied to 0. metallicum, and producing large 

 branching spikes of flowers after the style of 0. serratum. 

 The dorsal sepal is reniform crisped overarching, dark brown 

 with a narrow yellow crisp border, the lateral sepals are large, 

 cuneate- oblong, on long stalks ; the roundish hastate incurved 

 undulated petals cinnamon-coloured, blotched and edged with 

 sulphur yellow ; and the ligulate lip is brown, and has an 

 angulate base and a remarkable double callus. It flowers in 

 March and April. — New Grenada. 



'FlG.—Gard. Chron., N.S., xix. 368, fig. 54. 



0. nigratum, Lindley. — A very pretty little species, with 

 pyriform ancipitous shining green pseudobulbs, one or two 

 ligulate acute leaves, and large branched panicles of small 

 starry flowers, of which the sepals and petals are linear- 

 lanceolate and much undulated, white barred with dark blackish 

 brown, and the lip, which is bluntly triangular in shape, is 

 yellow with pale cinnamon spots. It blooms in March and 

 April. The flowers are much like those of Odontoglossum 

 niBvium, but smaller. — Guiana. 



0. EuMgemiin, Lindley. — A lovely small-growing but 

 variable plant, sometimes regarded as a variety of 0. cuculla- 

 tuvi, and succeeding under the coolest treatment, growing as 

 it does at an elevation of 11,000 feet above the sea level. It 

 is somewhat more robust in all its parts than Odontoglossum 

 Phalcenopsis, but the flowers are in shape very like diminutive 

 examples of that species. The pseudobulbs are small narrow- 

 oblong, compressed, smooth, the leaves solitary linear-oblong 



