THE ORCHID REVIEW. 299 
HYBRID ODONTOGLOSSUMS. 
(Continued from vol. vit., p. 169.) 
THERE are two or three other doubtful Odontoglossums from the Andes 
whose origin has never been satisfactorily cleared up, though a very 
interesting circumstance now removes one of them permanently from the 
list, namely :— . 
OponTocLossuM X WATTIANUM.—This very beautiful plant flowered 
in the establishment of Messrs. F. Sander & Co., St. Albans, in 1899, and 
was described by me, being dedicated to the late T. R. Watt, Esq., of 
Chislehurst. Its origin was a matter of uncertainty, as will be seen from 
the original account :— 
“This is a very handsome Odontoglossum, though whether a natural 
hybrid or a distinct species would perhaps be difficult to decide at present. 
On the whole, however, I incline to the former view. It bears so strong a 
‘resemblance to one or two natural hybrids, which undoubtedly have O. 
luteopurpureum, Lindl., for one parent, that I cannot help thinking it 
comes from the same species. The other parent is not so obvious, but, 
from a variety of considerations, I think it may have been O. Lindleyanum, 
Rchb. f. The lip is stalked, the apex acuminate, and the column rather 
long, all of which characters would be expected to occur in such a hybrid, 
and as the two species grow together, such a one was likely to appear 
sooner or later. On the other hand, there are four or five plants which are 
said to have the same character, but these may be subdivisions of one 
original plant, or seedlings from the same seed pod ; otherwise, the fact 
might be cited as one that told against its hybrid origin. . - - The 
materials to hand consist of two pseudobulbs, a leaf, a single flower (care- 
fully dried), and an excellent sketch, with analytical details. I should not 
like to say that it may not prove a distinct species, aS has been supposed, 
though at present the chances seem against it.” 
Subsequently it was figured in Reichenbachia, when Messrs. Sander 
wrote :—‘ A very great surprise awaited us when we flowered this handsome 
species in the spring of 1889 in our establishment. A few plants had been 
sent home to us in 1888, by one of our collectors, as Odontoglossum species 
from the United States of Columbia. - - - There is a great doubt in 
our minds whether this Odontoglossum is @ natural hybrid or a true species, 
but we are inclined to lean towards the latter theory. - . It is very 
rare in its native habitat, and a few plants only came home, but these were 
found at long distances apart, growing in the forks of small oak trees, at a 
lower elevation than Odontoglossum crispum- + - Since flowering our 
plants we have in vain tried to get 2 further supply:” 
I then described it as intermediate in habit between QO. Lindleyanum 
