202 THE ORCHID: REVIEW. [JULY, 1915. 
to whom we are indebted for the photograph, remarks that it is considered 
as one of the most beautiful forms of O. crispum in the collection. The 
segments are very broad, giving the flowers « full round shape, and the 
petals are well fringed. The segments have a broad white margin, and the 
large solid blotches are deep purple with a suffusion of purple at the edges. 
There is a deep suffusion of rose-purple at the back of the segments, giving 
a tinge of purple in front, especially at the tip of the sepals, while the 
blotches on the lip are rich chestnut brown, with the usual yellow crest. 
It is named after Mrs. Clive Cookson. 
If we were asked, is it a crispum?—and no other question is so 
frequently put to us now that so many blotched Odontoglossums are being 
Fig. 25. ODoNToGLossumM WILCKEANUM CHESTERTONII. 
(? crispum xX luteopurpureum.) 
raised—the answer would be difficult. It is a crispum in the sense that its 
parents are crispums, and in the sense that the term is generally used, but 
it has long been recognised that Odontoglossum crispum is what may be 
termed a composite species, and that it includes a number of blotched 
derivatives from several other species with which it grows in a wild state— 
the result of crossing by insects through countless generations. This is 
easily seen from their characters, and from the fact that they do not occur 
where O. crispum grows separately, as in the case of the geographical form 
O. crispum Lehmanni, but they grade so imperceptibly into the species that 
ull absolute dividing lines are obliterated. 
