THE ORCHID REVIEW. 9 
the type in having the ground colour of the dorsal sepal yellow, and the 
petals and lip of a light brownish yellow shade. 
C. i. albo-marginatum (Orchid Album, v. t. 232) has the flowers distinctly 
yellowish, and the dorsal sepal broadly margined all round with white, the 
spots being rather light in colour, and entirely limited to the yellowish 
green disc. 
C. i. Sanderze (Gard. Chron., 1888, ii. pp. 606, 692; Orchid Review, il. 
p. 41, fig. 5) is the beautiful light yellow unspotted variety, whose history 
and a figure were given in our last volume. 
C. i. Horsmanianum (Rchb. f. in Gard. Chron., 1888, ii. p. 693) appeared 
in the establishment of Messrs. F. Horsman and Co., Colchester, and is 
characterised by having long and narrow sepals, but of the usual colour. 
C. i. Hallianum (Rehb. f. in Gard. Chron., 1889, i. p. 168) is much like 
the preceding, but is said to differ in having spotted petals. The dorsal 
sepal has a long greenish disc, on which are some fine nearly chocolate- 
brown spots. It appeared with Mr. W. Hall, of Upper Tulse Hill, 
London, S.W. 
C. i. Macfarlanei (Rolfe in Gard. Chron., 1890, ii. p. 655) differs from C..i. 
Sandere in having considerably narrower sepals and petals of rather deeper 
yellow. It appeared in the collection of R. H. Measures, Esq., The Wood- 
lands, Streatham. 
C. i. longisepalum (Rolfe in Gard. Chron., 1891, i. p. 72) has the long and 
narrow sepals of C. i. Horsmanianum, but the dorsal sepal is light green, 
suffused with light dusky brown on the dorsal half, without any spots, and 
the white area at the apex reduced to the smallest dimensions. It appeared 
with Messrs. F. Sander and Co., St. Albans. 
C. i. Bohnhofianum (Gard. Chron., 1891, ii. p. 586; Orchid Review, ii. 
p. 98) is a strikingly distinct form. The dorsal sepal has a large brown, 
nearly circular area extending from the base to the middle, above this a light 
green zone a quarter inch broad, the remainder being white. It is typical 
in shape. It appeared in the establishment of Messrs. F. Sander and Co., 
St. Albans. 
C. i Le Doux’s var. (O’Brien in Gard. Chron., 1892, i. p. 363) is described 
as intermediate between the varieties Bohnhofianum and albo-marginatum, 
there being some faint brownish lines on the green area of the dorsal sepal, 
and around this a broad white margin, while the petals are yellow, with 
some obscure tracings of brown, and the lip lighter than usual. It appeared 
with G. le Doux, Esq., Langton House, East Molesey. 
C. i. Sanderianum (Orchid Review, i. p. 145, fig. 10) approaches C. i. 
Sanderz in general character, but is smaller, has a shorter, rounder dorsal 
sepal, and is not quite so clear a yellow. The general resemblance is readily 
seen in our two figures. It is in the celebrated collection of Baron Sir H. 
Schréder, The Dell, Egham. 
