GLOSSARY OF TERMS USED IN THIS BOOK. 357 



Fertilization, the union of two nuclei, one a sperm nucleus and the other an 

 egg nucleus, 123, 172, 173, 205, 206, 208. 



Follicle, a capsule with a single carpel which opens along the ventral or up- 

 per suture, 230. 



Free, said of floral sets where no one set is joined to another set, 221. 



Frond, a nearly obsolete term sometimes applied to the leaves of terns, but 

 more frequently to the flattened body of certain seaweeds, 217. 



Fruit, the mature part of the flower which contains the seed, 228, 230. 



Fungi, plants devoid of chlorophyll, possessing mycelium as the structural 

 unit (except certain unicellular forms), 125-138. 



Funiole, the stalk of the ovule, 207-210. 



Gamopetalous, said of the corolla when the petals are more or less united, 

 222. 



Gamosepalous, said of the calyx when the sepals are more or less united, 

 222. 



Geotropism. term used to express the property of stems and roots when in- 

 fluenced by the earth in direction of growth, 108. 



Gynandrons, said of stamens when they are united with the pistil, 243. 



Gyncecium, the pistils taken collectively, 197. 



Head, same as capitulum, 227. 



Heliotropism, a turning influenced by light, said of stems, roots, and leaves 

 when their position is influenced by light, in. 



Hilum, the scar on the seed where it was attached to the wall of the ovary, 

 207, 210. 



Hygrophyte, term used to denote plants which grow in damp situations, and 

 which easily wither when the water supply is checked, 288, 289. 



Hypha. a single mycelium thread, 125. 



Hypocotyl, the part of the seedling between the cotyledons and the root, 211. 



Hypogynous, said of flowers when no floral set is united with the ovary, 222, 

 223. 



Inflorescence, the relation of flowers on an axis or its branches, 225-228. 



Insertion, term used in speaking of the position or attachment of the parts 

 of the flower, 221. 



Integument, the coat or coats of the ovule, 208. 



Irregular, said of flowers where the different members of one or more sets 

 are of different size, 222. 



Legume, the fruit of the pea, bean, etc. , 230. 



Leucoplast, the colorless proteid body in protoplasm of chlorophyll-bearing 

 plants, which under favorable circumstances may become green with 

 chlorophyll, or become a chromoplast, or may act as a centre for the 

 formation of starch grains where starch is stored, as in the potato tuber, 

 etc., 77. 



