HYBRID ODONTOGLOSSA. 267 
There is another manner, in which the theory that the male element 
pervades the female plant’s system may be collaterally proved, and that 
is by a plant carrying two pods at once, crossed by distinct pollen, such as 
erispum x Harryanum and luteo-purpureum. If any evidence of Harry- 
anum appeared in the “luteo”’ seedlings or vice versd, it would be dis- 
tinctly proved that the male element did pervade the whole plant. I have 
many crosses, made simultaneously, which will throw much light on 
this. 
Fic. 87.—O. Srewartmanum. (Orchid Review.) 
Between “ Reversion”’ and “ Latent Germ”’ I think we have enough 
to account for the variation of Odontoglossum hybrids, and need not be 
at all astonished at surprising results. (Perhaps this has already ac- 
counted for some seedlings which have not had the faintest resemblance 
to the “ parentage guaranteed ”’ that is so often given in the Orchid world.) 
Professor Dr. Tschermak stated in his paper at this Conference that 
hybridity was responsible for new and unexpected variations. I think it 
highly probable that in this action of the “ Latent Germ” we have an 
explanation of his statement, with which I fully agree. 
CONCLUSION. 
At the present time we have only scratched the surface of this 
subject, both theoretically and practically ; but looking at the number 
of investicators and raisers now at work, among whom the following are 
