186 ORCHIDS. 
which succeeds in an intermediate temperature. It 
blossoms in May or June. Raised by Messrs. Veitch 
and Sons. First flowered in 1869. Interesting on account 
of its being the first artificially-raised hybrid Cypripedium. 
There are over half-a-dozen named varieties of this, the 
names being descriptive of the special characters of each. 
They are nigrum, rubrum, superbum, venustum, &c. 
C. Io (from C. Argus and C. Lawrencianum).—Leaves 
similar to those of the latter parent; flowers large; dorsal 
sepal ovate, white, with purple and green stripes; petals 
spreading, green at the base, purplish at the tips, the 
margins bearing brown, hairy warts; pouch green and 
purple, large. A distinct and handsome kind. Raised 
by Mr. N. C. Cookson, Wylam-on-Tyne. First flowered 
in 1886. 
C. Leeanum (from C. insigne and C. Spicerianum).— 
Similar in habit and leaf-characters to C. Spicerianum. 
The flowers have a broad oval dorsal sepal, which is green 
at the base, the upper and greater part being pure white, 
with spots of mauve. The petals and pouch are as in 
C. insigne, save that the latter is shining red-brown. A 
good variety of this is a desirable plant, but there are many 
which are in no way superior to the ordinary C. insigne. 
Var. superbum is the best form, raised by Messrs. Veitch 
and Sons, and Sir Trevor Lawrence, Bart. First flowered 
in 1885. 
Fig. 48. 
C. marmorophyllum (from C. Hookere and C. barbatum). 
—Foliage as in C. Hookere. Scape ift. or more high, 
purple, hairy, one-flowered; dorsal sepal large, broad, 
green and white, with dark green stripes, shaded with 
purple near the base; petals drooping, purple, bearded; 
