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The Journal of Heredity 



SELF-STERILE, BUT PRODUCING PODS WHEN CROSSED 



Figure 17. This plant of Lilium spcciosum is fully self-incompatible, but yields fine 

 pods to pollen from certain other plants of the same species, which presumably indicates 

 their origin from different seeds. This, of course, does not insure compatibility, as plants 

 known to be of distinct seed-origin are often incompatible. Self-incompatibility is also 

 met with when large plantings of fruit trees of the same variety are made. Unless two 

 or more distinct varieties of different seed origin are inter-planted, no fruit is produced. 



