210 THE ORCHID REVIEW. 
flower also shows the influence of the same species, in the broad dorsal 
sepal and the nearly horizontal petals, as well as in the shape of the lip and 
_Staminode. These characters are invariably seen in hybrids derived from 
C. Lawrenceanum, and thus they afford a clue to the origin of the present 
hybrid, and at the same time indicate Borneo as the natural habitat ; for C. 
Lawrenceanum is not known from elsewhere. The other parent is not 
so obvious from an examination of the hybrid, but two or three circum- 
stances lead me to believe it was C. Dayanum. The first character which 
struck me on seeing the plant, even before I knew anything of its history, 
was the resemblance it bore to a large form of C. x Swanianum, an 
artificial hybrid from C. Dayanum 2 and C. barbatum g, and one derived 
from the former and C. Lawrenceanum would naturally show such a 
character. C. Dayanum is the only North Bornean species which would 
account for the characters of the present hybrid, and as the two facts seem 
to confirm each other, the obvious inference is that it is a natural hybrid 
between C. Lawrenceanum and C. Dayanum, which are both North Bornean, 
and in some locality may grow intermixed. I tried hard to utilise the 
indication afforded by C. tonsum having come home in the same 
importation, but without success. If the records are correct, that species 
is a native of Sumatra, and grows with C. Curtisii. These would give a 
very different hybrid, and no other species is recorded from Sumatra. 
Nor is C. tonsum known to occur elsewhere. Again, this species is 
absolutely destitute of hairs on the petals—in allusion to which its name 
was given—while C. x Littleanum is as strongly ciliate as C. Law.cnceanum. 
The character is well-shown in the photograph, but has unfortunately 
_ almost been lost in the reproduction. Among the multitude of hybrids 
raised, I find no record of one between C. Lawrenceanum and C. Dayanum, 
but it is to be hoped that the cross will now be attempted, in the hope of 
reproducing the present fine thing. The figure is reduced in size, as_ the 
living flower measures 5% inches from tip to tip of the petals (53 inches 
when flattened out), and the dorsal sepal 1% inches broad. The colour is 
lighter than in C. Lawrenceanum. The dorsal sepal is white with green 
veins, which become slightly purple near the margin, and the petals dull 
green below the middle, with a few minute spots near the base, and the 
apex light purple. The upper margin of the latter has a row of small 
blackish warts, much smaller than in C. Lawrenceanum. The lip is also 
lighter in colour than in that species. The modification of the dorsal sepal 
and the broader petals show the influence of the other parent. The petals 
are not as strongly ciliate as in C. Dayanum (not yet asin C. X Swanianum), 
but in this respect, as in some others, it takes most after C. Lawrenceanum. 
It is a large and very striking hybrid, and particularly interesting on 
account of its origin. The plant bore two flowers. 
R. A. ROLFE. 
