Cenozoic 



Refers to the geological era extending from 40 million 

 years or more ago to the present era which began about one 

 million years ago. 



Center of Dispersal 



The area from which a Taxon has spread or is spreading. 



Center of Origin 



The area in which a Taxon originated and from which 

 it has spread. 



Cephalic Index 



A measure of the conformation of the human head, the 

 breadth in percentage of the length (front to back). 



Cereal 



A plant in the grass family, Gramineae, the grains of 

 which are used for human food, e.g., maize, wheat, and oats. 



Certified Seed 



Seeds that have been approved by a certifying agency as 

 qualifying under established standards of germination, free- 

 dom from diseases and weeds, and trueness to variety. 



Cespitose (Caespitose) 



Refers to plants with branches, short stems that are 

 usually covered with leaves, forming dense tufts or cushions. 



Cestode 



An animal in the class Cestoda, including the tapeworms. 



Cetacean 



A Mammal in the order Cetacea, including whales, 

 dolphins, and porpoises. 



Chaff 



(1) A dry, thin scale found especially as bracts in flower 



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