Blanquet's scheme of classification that contains species oc- 

 curring most frequently in only one kind of community, but 

 may rarely occur in others also. 



Seleniferous 



Refers to soils, plants, and other substances that contain 

 a relatively high concentration of selenium. Some species of 

 Astragalus are toxic to livestock because of accumulations of 

 selenium in the tissues. 



Self-fertile 



Refers to an organism in which Self-fertilization occurs. 



Self-fertilization 



The process by which eggs of an organism can be ferti- 

 lized by sperms produced by itself, cf. Hermaphrodite, Self- 

 sterility. 



Self-incompatibility 



The condition where pollen of a plant fails to develop 

 effectively on a Stigma of the same plant, cf. Compatibility, 

 Self-sterility. 



Setting 



A process of causing Self-pollination. 



Self-pollination 



The transfer of pollen from an Anther to the Stigma in 

 flowers on the same plant, cf. Cross-pollination. 



Self-pruning 



The death and falling of branches, especially the lower 

 ones, of living trees. 



Self-sterility 



The failure of an egg of an organism to be fer- 

 tilized by a sperm produced by the same organism, cf. 

 Self-incompatibility. 



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