THE ORCHID REVIEW, 327 
GEOGRAPHICAL DISTRIBUTION. 
The immense area over which Odontoglossum crispum grows can be 
subdivided into three quite distinct regions. The first, having the village of 
Pacho for its centre, is the region which yields the best round flowered 
form, known in commerce as the “ Pacho type.” It extends on the one 
hand between Pacho, Ubaté, Coper and San Cayetano, and on the other 
hand between Sasaima, La Vega, Lupata and Pacho. All this region has 
been searched and exploited, one might say up to its remotest corner, and 
the peon would consider himself lucky who returned with twenty plants as 
the fruits of a week’s work. The prevailing species of this region are O. 
crispum, O. Lindleyanum, and O. gloriosum, associated with a few O. 
luteopurpureum and O. Wallisii. The natural hybrids found here are 
rather rare, but when one has the good fortune to find one it is often of 
remarkable beauty. 
The second region is formed by the Cordillera which extends between the 
Rio Minero and Rio Suarez up to the Valle de Jésus. The upper part of 
this region also yields a very good type of O. crispum, both for the form and 
size of the flowers. The plants having small flowers, which we sometimes 
meet with, come from the lower limits, that is to say the more temperate 
region of the Cordillera. This plant is easily distinguished at the moment 
of collecting. The peons, however, mix them with the others, thinking they 
will pass unobserved, and thus augment the profits of their work. We 
invariably reject them, though I have a strong conviction that when well 
cultivated in a normal temperature, for three or four years perhaps, the 
flowers would revert to the form and dimensions of the type which is found 
from about 600 to 1302 feet higher up. ae 
The experiment I think would be worth the trouble, because it 1s 
undeniable that all have originated from the same stock. If I may express 
it thus, I would say that we find ourselves in the presence of a plant only 
degenerated by displacement from its true centre, not in that of another 
altogether inferior species. Men and animals from northern regions do not 
degenerate after a long sojourn in tropical latitudes. Do not their children 
preserve the same vigour as in their original birthplace ! a 
It is a small section of this region that has yielded the principal hybrids 
which have appeared among the importations of recent years. I have ot 
been able to prove that the natural hybrids which are principally met wit 
at the extreme limits occur at an altitude where O. crispum grows In re- 
latively small quantities, and where O. Lindleyanum and its variety am 
andum largely predominate. And further, that O. gloriosum grows in suc 
abundance that at the time of flowering the forest is literally scented with It. 
In one of my excursions of this year I found O. coronarium Bo. 
the same Cordillera with O. crispum, and also some rare examplesot VU. 
