356 GLOSSARY OF TERMS USED IN THIS BOOK. 



Chlorophyll body, the proteid body in protoplasm which contains the pig- 

 ment chlorophyll, 76, 77. 



Chloroplast, said of the chlorophyll-bearing body, 77. 



Chromoplast, the proteid body in the protoplasm of carrots, and the petals 

 of certain flowers which contains a pigment, 77. 



Coherent, said of the members of one floral set when they are united, 221. 



Conjugation, a process of fertilization during which the sexual cells become 

 yoked or united, 115, 118. 



Corm, a short thick underground fleshy stem, 219. 



Corolla, the petals taken collectively, 195. 



Cotyledon, the first leaf, or leaves, on the embryo plant, 211-216. 



Cyme, said of flower clusters, where the uppermost flower opens first, a de- 

 terminate inflorescence, 228. 



Cymose, a kind of branching present in cymes, 228. 



Diadelphous, two brotherhoods, said of stamens when they are grouped or 

 joined in two definite clusters, 270. 



Diageotropic. said of stems and leaves which grow in a horizontal direction, 

 109. 



Diageotropism, turning sideways, or parallel with the surface of the earth — 

 term used in reference to stems which grow in a horizontal direction, 

 108. 



Diaheliotropism, term used to denote the direction of growth which stems 

 take when they grow perpendicular to the direction of light rays, III. 



Dichasium, a false dichotomous branching, 228. 



Dichotomous, said of an axis where a true forking occurs as the axis branches, 

 227. 



Distinct, said of the members of a floral set when they are separate from 

 each other, 221. 



Drupe, a stone fruit with a fleshy pericarp, 230. 



Ecology, a study of organisms in their mutual and environmental relations, 

 283. 



Embryo, the young plant in the seed of gy mnosperms and angiosperms, 205, 

 208, 216. 



Embryo-sac, the macrospore in angiosperms, the central cavity in the nucel- 

 lus of the ovule containing the egg, and other nuclei, in which the em- 

 bryo and the endosperm are formed, 203, 205, 206. 



Endooarp, the inner zone of tissue of the pericarp, 229. 



Endosperm, the tissue developed in the embryo-sac from the definitive, or 

 endosperm, nucleus after fertilization in angiosperms, 208, 215. 



Epigynous, said of flowers where any portion of the calyx or corolla is joined 

 to the ovary, 222, 223, 227. 



Exocarp, the outer zone of tissue of the pericarp, 229. 



