162 THE ORCHID REVIEW. 
Ainsworthii and D. Findlayanum, which was originally raised in the 
collection of Sir Trevor Lawrence. The two first seedlings which flowered 
differed remarkably between themselves, and were described by Reichenbach 
as D. x chrysodiscus and D. X melanodiscus. Afterwards several others 
flowered out of the same batch, and also received separate names, as D. X 
Hebe, x Luna, xX Dido, xX Rainbow, and xX The Pearl, all of which 
Hansen treats as synonyms. But the same cross has since been raised in | 
otner collections, and the seedlings have also received distinct names. 
Other examples might be cited, and it suggests the question, What will our 
system of nomenclature be like when secondary hybrids become more 
numerous, and all are named on the same principle ? 
- It would seem far more logical to have one uniform rule for the treatment 
of both primary and secondary hybrids, and from almost every point of view 
it would simplify matters to treat all hybrids between any two parents as 
forms of one, varietal names being added when necessary for the 
identification of distinct variations. In other words, hybrids should be 
classified with regard to their origin, rather than their appearance, which 
would help us to realize the amount of variation shown by different 
hybrids, and keep the number of names within reasonable limits. Unless_ 
this principle 1s adopted, a great amount of confusion in nomenclature is 
inevitable, for we have already several hybrids with distinct names which 
are not even distinguishable as varietizs. 
By way of showing how this system would work out in practice, we 
have arranged the existing hybrids of the genus on the following plan. 
Primary and secondary hybrids are kept in separate lists, and the parents 
are arranged alphabetically under the first of the two parents in the 
alphabetical series. Thus the hybrids between D. aureum and D. nobile 
are arranged under the former. This is done to avoid duplication of each 
entry, which would otherwise be necessary. In consulting the list one has 
only to remember this arrangement in order to find the name of any given 
hybrid. Natural hybrids, however, unless also raised artificially, are not » 
included, and no attempt is made to indicate which was the seed parent. 
The names within brackets in the Hybrid column are synonyms, and 
those which are distinct enough may rank as varieties. 
PRIMARY HYBRIDS. 
PARENTS. HYBRIDS. 
albosanguineum nobile: =~‘ x Murrayi. 
aureum Falconeri x Benita. | 
t Findlayanum x Schneiderianum (See p. 169). 
‘i Hildebrandii . x Elwesii. : 4 
oe , Linawianum < dulce (X burfordiense). 
luteolum x cheltenhamense. 
