SEPTEMBER, 1916.] TRE ORCHID: REVIEW. 213 
E 
EARLY a year ago (O.R., xxiil. pp. 321-322) we alluded to the use 
made of Cattleya Dowiana in the attempt to raise a race of yellow 
Cattleyas, and the small amount of success that had been obtained, even 
when the species was recrossed with its own hybrids, and an analysis of the 
latter may be interesting now that their period of blooming has again 
CATTLEYA DOWIANA AND ITS DERIVATIVES. [3 
arrived. 
CROSSES WITH CATTLEYA. 
Cattleya Dowiana has been crossed with practically every other species 
of the labiata group, and five of the resulting hybrids have been recombined 
with it, as here shown. In every case the second species is given in the 
left-hand column, the primary hybrid in the centre, and the secondary. 
hybrid resulting from recrossing the latter with C. Dowiana on the right. 
Gaskelliana. Rothschildiana. Abekeniz. 
labiata. Fabia. Sylvia. 
Rex. triumphans. King-George. 
Triane. Maggie-Raphael. Bellona. 
Warscewiczil. Hardyana. Prince-John. 
In this group both the primary and secondary hybrids have the typical 
labiata shape, and the purple colour has been dominant, with the single 
exception of C. Rex, which suggests a line for further experiment, for C. 
King-George is the most beautiful yellow that has yet appeared. 
With the long-bulbed Cattleyas, a corresponding series of hybrids with 
-C. Dowiana can be shown in seven cases, but a further sub-division can 
conveniently be made according to the shape of the lip. 
Of the small group with an entire lip only one example can be cited, 
and the character is naturally retained by both the primary and secondary 
hybrid, while the purple colour of the other parent is again dominant. 
Bowringiana. Mantinii. Freya. 
Of the group with a three-lobed lip there are four cases in which both 
the primary and secondary crosses with C. Dowiana have been raised, in 
the last two of the series the front lobe being separated from the side lobes 
by a distinct isthmus, and the difference is more or less reflected in the 
resulting hybrids, which are as follows :— 
Forbesii. fulveseens. Katie. , 
Harrisoniana. Pittiz. Andreana. 
granulosa. Pittiana. Baron-Delbeke. 
Leopoldii. Chamberlainiana. Antiope. 
The three-lobed lip seems dominant in this group, both in the primary and 
