EXTRACTS FROM PROCEEDINGS. 



cxxxix 



P. cortusoides amcena, P. auricula, the Dodocatheon or American 

 Cowslip, and a few others. But I failed to effect a, fertile cross 

 among these inter se, or with the Primula veris or P. elatior, 



I may only cite one instance of an abnormal form being pro- 

 duced by crossing a Polyanthus with P. cortusoides amoena ; but 

 the progeny are simply monstrous P. polyanthi. But if aught of 

 the P. amcena be there, I may (seeing the reproductive organs, at 

 least the female, are perfect) bring out something of the latter 

 species by repeating the experiment ; and this, in fact, I have 

 done. 



Though I have thus failed in intercrossing the above distinct 

 species one with another, to the effect of producing hybrid progeny, 

 yet I did not fail entirely in producing hybrid seeds. And I shall 

 now, as it may be instructive, detail in a few instances how far 

 I succeeded in obtaining these. 



Again, permit me to observe that in all my crossings in this 

 tribe I adhered to the Darwinian theory of taking high anthers 

 for long stigmas, and vice versa. 



Experiment 2. I crossed Primula cortusoides, stigma supra, with 

 P. Sinensis alia, stigma infra. Product 8 seeds ; no plants came. 

 I doubted if the seeds were fully ripe. 



Exp. 6. Maroon P. polyanthus crossed P. cortusoides amcena : 

 3 seeds, 2 of them good, 1 abortive, failed to germinate. 



Exp. 9. Primula involucrata crossed P. cortusoides amoena : 20 

 seeds, failed to germinate. 



Exp. 11. Dark-laced yellow P. polyanthus crossed semidouble 

 P. sinensis : 5 seeds, failed to germinate. 



Exp. 12. Same P. polyanthus crossed large purple-flowered P. 

 Sinensis : 4 seeds, seemed ripe, failed to germinate. 



Exp. 18. P. cort. amoena crossed Dodocatheon Jeffreyii : very few, 

 doubtful if ripe, failed to germinate. 



Exp. 19. P. cort. amcena crossed semidouble white P. Sinensis -. 

 failed to germinate. 



Exp. 20. P. polyanthus crossed Dodocatheon Jeffreyii: 4 or 5, 

 apparently ripe, failed to germinate. 



Exp. 22. P. polyanthus crossed Dodocatheon Jeffreyii : only 2 

 good seeds. Both have come, but have not yet bloomed. The 

 foliage is that of the Polyanthus, which I fear it only is. 



Exp. 29. P. Sinensis crossed P. cort. amcena alba : 2 seeds, failed 

 to germinate. 



There is in all this just so much of result as to encourage a 



