Stout : The Orange Day Lily 



245 



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CROSS POLLINATION CAUSING PARTIAL DEVELOPMENT 



Figure 3 



Frequently capsules start to develop on the fulva day lily when its 

 flowers are cross-pollinated with pollen of certain types of day lilies. 

 But when such capsules are about one-third matured (see above) they 

 nearly always wither and fall. The foreign pollen thus merely stimulates 

 a partial development of capsules, an effect not seen in the self-pollination 

 of fulva. 



record that any of the plants of fulva 

 have ever produced seed. From time 

 to time collections of different species 

 and varieties including the fulva have 

 been grown together under conditions 

 that favor cross-pollination by insects. 

 For ten years plants of fulva have 

 been thus grown at The New York 

 Botanical Garden without producing a 

 single capsule to the open pollinations 

 that mav have occurred. 



Various breeders of day lilies have 

 attempted to secure seed from fulva 

 through cross-pollination by hand. One 

 of these Mr. George Yeld 4 reports as 

 follows : 



As to H. fulva, I have many times used 

 pollen of it, but never with success, and it, 

 moreover, refuses to seed. I have looked 

 for seed of it in many places — in Auvergne, 

 in Switzerland, in Northern Italy, near 

 Naples, in Cicily, in the Lipari Islands, in 

 Northern Asia Minor, in Trans-Caucasia ; 



