I 



ONCIDIUM LANCE ANUM LOUVREXIANUM. 



[Plate 129.] 



JS^divG of Dutch Guiana, 



Epiphytal. Stems forming a very short woody annulatcd rootstock (obiilhous), 

 from which are protruded the thick greenish roots. Leaves el!iptic-ol)l<»iig acute, 



slightly keeled, somewhat recurved at %the point, a foot to a foot and a 

 half in length, dull deep green speckled with purple, the speckling most strongly 

 marked on the under surface and on the younger parts. Pmncles rigid, short-hraiiclitd, 

 on green peduncles, which spring from the base of tlic leaf, and are hlotc-licj with 

 purple, and invested with scarious ovate-acuminate bracts, the lower ones being 

 larger and much lengthened out. Flowers showy, fragrant like vanilla; scpah obhmg- 

 obovate, narrowed below, concave, keeled, wavy at the edge, yellowish green 

 externally, internally brighter yellow-green and spotted irregularly with rchlish 

 brown, a broad blotch of brown occupying the base ; petals similar to the f-'cpal.s 

 in size, form, and colour; lip one and a half inch long, three-lobed, th» lateral 



or basal lobes magenta-purple, darkest at the centre, triangular-oblong, with litre.' 

 crests diminishing upwards on the disk between them; the middle or anterior lobe 

 clawed, transversely-oblong, emarmnate, the anterior half of the claw and the broarl 



anterior lobe itself white. Column short, white, with a pair of magenta-e.jh'ure.l 



oblique oblong side wings, and a red anther cap. 



Onoidium Lanceanum Louvrexianum, Reichenhach fit, in Gardeners' Chrow<-fe, 

 -vs., xvii., 218. 



bel 



! 



We now present to our subscribers the figure of a most beautiful Orchid whieh 

 '^>ngs to an extensive genus, the species of which vary much in their gi-o\vth 

 bulbs, foliage, and flowers, the latter including almost every gradation of size and many 

 shades of colour. The Oncidiums are among the most useful of plants for decorative, 

 purposes, as every one must know who .grows Orchids. Oncidium Lanceanum U 

 quite distinct as a species from any others with which we are acquainted, and is 

 remarkable for having a ricli rosy violet lip ; the typical form wc hope to be al^le to 

 figure at some future time. The variety Louvrexianum, as will be seen from the 

 aunexed illustration, differs from the type in having the lip white. Our plate wa« 

 prepared from an excellent drawing of a plant which flowered in the fine collection 

 «f Orchids belonging to Mons. D. Massange de Lou^tcx, of Marehe, in Bel.cnnm 



^^e of the best collections in that country, and one also in which the i 

 ^ ell cultivated, and many unique specimens are to be seen. 



Oncidium Lanceanum Louvrexianum is an evergreen plant like the type, it 

 ^^^•s to a foot or more in height, and has light green foliage which is spotted 



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