ere ORCHID REVIEW. 
Vor. ALV.} JULY, 1906. [No. 163. 
VARIATION IN ODONTOGLOSSUM CRISPUM. 
UNDER this title Mr. De Barri Crawshay has contributed an interesting 
paper to the Gardeners’ Chronicle (1906, i. p. 338), which, at his suggestion, 
we reproduce here. There has been much speculation as to the origin of 
the so-called blotched forms of O. crispum, and a few have been already 
definitely recognised as hybrids, while others have been suspected as such. 
The appearance of secondary hybrids from O. crispum is likely to throw a 
flood of light on the question, and three such have already appeared and 
been figured in our pages. Mr. Crawshay has now tried to trace the 
geographical distribution of these spotted forms, and the well-known fact 
that O. Hunnewellianum and O. triumphans, with the hybrids O. x 
Adrianz and O. X loochristiense, are not found in the localities whence the 
earlier importations of O. crispum came is important in this connection. 
Further evidence as to the precise distribution of the species and hybrids of 
the O. crispum district would be most acceptable. The following is Mr. 
Crawshay’s article.—ED. 
“TI have long been considering the sectional distinctions of the 
enormous number of named varieties of this species. Every year they 
become more linked up by the appearance of new forms of this complex 
plant, for since the gigantic importations of recent years from newer 
districts, the variation in‘the spotting is seen to be more marked and in 
itself more varied than it was in the ’eighties and early ‘nineties. This has 
resulted from spotted forms coming from the district where O. Hunne- 
wellianum and O. triumphans represent the brown and yellow species that 
are the equivalents of O. luteopurpureum and of O. gloriosum in the 
‘Pacho’ districts. 
“Primarily, the districts themselves from which the plants come are 
widely separated and can be sectionised, for Fusagasuga, La Vega, Pacho, 
San Cayetano, Chiquinquira, and Velez are all far enough apart to 
constitute ample difference in the general type of the crispums from each 
place, résulting from natural circumstances. I take these names as in- 
dicating the districts, but, of course, the area is much larger than is 
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