1830 
ONCIDIUM Russelliánum. 
The Duke of Bedford's Oncidium. 
Nat. ord. OrcHpacea, $ VANDER, 
ONCIDIUM — Supra, vol. 13. fol. 1050. 
B. Labellum integerrimum. 
O. Russellianum ; pseudobulbis ovatis costatis diphyllis, foliis ligulato-lanceo- 
latis patentibus, racemo paucifloro radicali, sepalis petalisque conformibus 
ovato-oblongis subundulatis, labello postico oblongo-cuneato retuso apiculato 
subsinuato, lamellis disci truncatis. 
Folia let? viridia. Caulis fusco-purpureus. Sepala et petala fusco- 
purpurea viridi marginata et costata. Labellum lilacinum lamellis disci 
purpureis albo-marginatis, quarum series tres geminate truncate sensim 
anteposite pares duas includunt angustissimas pariter truncatas. Columna 
ale semiovate erose acute lutee ; gynizus margine purpureo basi utrinque 
bidentato (fig. 1.) ; anthera et pollinia Oncidii. 
That this is a genuine species of “Oncidium I by no 
means aver ; on the contrary it differs from the general form 
of that genus in its undivided posterior lip, and in the two 
teeth which are placed below the gynizus on either side : its 
colour too, notwithstanding the example of O. Lanceanum, is 
different from what Rey p the principal part of the spe- 
cies of this very natural and extensive genus. Nevertheless 
I do not feel justified în forming a new genus out of the ma- 
terials I at present possess. The plant may possibly be a 
transition species; and it ranges well enough with the ver- 
bal character of Oncidium. 
I have named this species in compliment to his Grace 
the Duke of Bedford, one of the many liberal patrons of 
Botanical science of whom England now can boast, and in 
whose stove at Woburn it first appeared in Europe. It was 
obtained from the garden of Mrs. Moke at Tejuca near Rio 
Janeiro, by the Hon. Capt. J. Roos, R.N. who sent it to 
Woburn «o with many other valuable plants in 1835. 
