the curving of a plant toward a higher concentration of 

 oxygen. 



Aestidurilignosa 



Woodland characterized by mixed evergreen-deciduous 

 hardwoods. 



Aestilignosa 



Forest or woodland in which the woody plants are leafless 

 in winter and buds are protected by scales, e.g., beech forest. 



Aestival 



See Estival. 



Affinity 



The relationship between organisms that indicates a 

 common origin; used occasionally to denote similarity of 

 communities. 



Afforestation 



The process of establishing a forest on an area, especially 

 where forest was not present previously, cf. reforestation. 



Aftermath 



The regrowth of plants after mowing. 



After-ripening 



The dormancy period, following formation of the seed 

 that is required for changes in the embryo to occur prior 

 to germination. 



Agameon 



See Agamospecies. 



Agamic 



Asexual. 



Agamogenesis 



Asexual reproduction, parthenogenesis (q. v.). 



Agamospecies 



An aggregation of individuals in which reproduction oc- 



8 



