"4 
APRIL, 1923.] THE ORCHID REVIEW. Ii 
CYPRIPEDIUM CALLOSUM DISEPALOUS. 
HE accompanying figure of Cypripedium callosum shows a normal 
flower on the right and a disepalous form on the left. In connection 
with ‘“‘ Notes on the Segments of Orchid Flowers,” page 47, where the 
sepals are described, this disepalous form is of interest. The ventral or 
lower sepal is equal in size to the dorsal or upper sepal, and is almost 
similarly marked with vertical lines of colour. This particular example 
appeared some years ago in Mr. C. C. Mann’s collection at Gourock, and 
represents an occurrence that is occasionally seen in other species and 
hybrids of the genus. At the R.H.S. meeting, November roth, 1903, 
Cypripedium insigne bisepalum was exhibited by Mr. G. F. Moore; the 
CYPRIPEDIUM CALLOSUM, DISEPALOUS ANP NORMAL. 
lower sepal of this was enlarged, and partly white, thus somewhat 
resembling the upper sepal. C. Leeanum grandisepalum may also be 
recalled, for this was remarkable in having the lower sepal developed like 
the dorsal; it was exhibited by Mr. G. W. Law Schofield at the R.H.S. 
January gth, 1900. Although it is uncertain whether this abnormality is in 
all cases permanent, there are a few examples known that produce such 
flowers every year, one of the best being Cypripedium Ballet Girl in the 
collection of Lieut.-Col. Sir George Holford. It is of unknown parentage, 
but in size and shape strongly resembles a variety of Leeanum. Another 
remarkable example in the same collection is Cypripedium Muriel II. var. 
amethvstinum, the lower sepal of which much resembles the upper one, and 
has the central portion green from base to apex. When flowering in 1921 
all three blooms were precisely similar. 
