424 Origin of Each Species Considered Separately. 



The two snhovata-y\2ints> of 1899 belonged to the 

 /a/a-family. One arose from lata crossed by O. nanella, 

 the other from lata crossed by O. Lamarckiana. Both 

 were recognized while young plants; they developed 

 stems and flowered freely. The first was weak and had 

 relatively small flowers; the second was strong and bore 

 flowers as fine as those of 0. Lamarckiana. Both were 

 absolutely sterile, at first I fertilized them with their own 

 pollen and later with foreign pollen, but in both cases 

 without result. 



But I regard it as extremely probable that I shall 

 some day succeed in getting a siihovata that will bear 

 seed. And if siihovata', why not other forms which have 

 not been detected, or even have not yet arisen in my 

 cultures ? 



latter in my O^wof/i^ra-plants (Botan. Jaarhoek; Gent, 1896, p. 88). 

 But the effects of it, especially the actual virescence of the flowers 

 themselves bore no resemblance to the peculiarities of the plants 

 described above. 



