248 THE ORCHID REVIEW. 
flower apparently of a fresh importation, weak. I asked for a second 
flower, but till now it has not flowered again, and may have been sold long 
ago. Lately I obtained it, with a fine, strong, well-rooted plant from 
Messrs. Veitch. It grew together with C. Petri, and it is more gay in its 
colours. Mr. Harry Veitch was pleased by my suggestion to name it in 
compliment to Mr. Burbidge, since I like to have two Cypripediums as near 
companions, just as these two travellers were good companions.” 
It is quite evident from these remarks that the plants in question are 
not identical with C. Dayanum, however much they may resemble it in 
certain respects. Besides the differences in shape and colour, I have long 
been struck with the shorter ciliz as compared with C. Dayanum, and the 
combined differences suggested an affinity with C. javanicum and C. virens. 
But the new facts above alluded to put the whole question in a new light, 
and on comparing all the forms together I find such an unmistakeable com- 
bination of the characters of C. Dayanum and C. virens in the doubtful 
forms C. Petri and C. Burbidgei as to leave no doubt in my mind that the 
two latter are both natural hybrids, with the parentage indicated, and forms 
of one, which may be distinguished as C. X Petri and var. Burbidgei. The 
discovery is interesting, and as Cypripediums are so easily hybridised, some 
one might make the experiment of crossing the two species together. 
Indeed, C. Dayanum might also be crossed with C. Lawrenceanum and C. 
Rothschildianum, with a view to proving the parentage of C. x Littleanum 
and C. X Kimballianum, two other Bornean Cypripediums believed to be 
of hybrid origin. 
R. A. Re 
ODONTOGLOSSUM x EXCELLENS LUTEOLUM. 
A VERY striking form of Odontoglossum x excellens has appeared in the 
collection of Baron Sir H. Schréder, The Dell, Egham, in which the brown 
blotches so characteristic of this handsome hybrid are almost entirely absent, 
leaving the flowers light sulphur yellow with a slight suffusion of light pur- 
ple on the back of the sepals, and the disc of the petals nearly white. There 
are a few small spots and streaks at the base of the lip, which are derived 
from the O. Pescatorei parentage, and on some of the flowers one or two 
minute spots on the front of the same organ, while one of the lateral sepals 
of a single flower has one small spot. With these trifling exceptions. the 
flowers may be described as unspotted, and thus it forms a striking con- 
trast with the typical form, with which it agrees in shape and size, and in 
the details of the column wings and crest of the lip. It is a very handsome 
form, and the almost total loss of the brown markings so characteristics of 
the O. triumphans parent is curious. 
R. A. R- 
