GLOSSARY 515 



"digests" or dissolves starch, sugar, oil products, etc., as diastase, lipase, 



cytase, etc., 132, 133. 

 Fertilization, term applied here to denote the union of the male and female 



nuclei of the sexual organs of plants, 143, 199, 202. 

 Filamentous, thread-like. 

 Foliaceous (Fo-li-a'-ce-ous), leaf-like, 299, 300. 

 Foliose (Fo'-li-ose), leaf bearing, 341. 

 Follicle, a dry fruit of a single carpel splitting along the ventral or upper 



line, 209. 



Frustule (Frus'-tule), a small piece; the silicious skeleton of the diatoms, 256. 

 Fruticose, shrubby, or shrub-like in its branching, 301. 

 Funicle (Fu'-ni-cle), the stalk of the ovule, 200. 

 Gametangium (Gam-e-tan'-gium), a case containing one or more gametes 



or sexual cells, or sexual nuclei, 237, 278. 

 Gamete (Gam'-ete), a sexual cell (or protoplast), or nucleus, which unites 



with another in the act of fertilization, 237, 238, 279, 338, 340, 



354, 35 6 - 

 Gametophore (Gam'-e- to-prior e, gamete bearer), the specialized structure 



of certain liverworts which bears the sexual organs, 338. 

 Gametophyte (Gam'-e-to-phyte), the gamete plant stage, or generation, in 



the complete life cycle of a plant, it bears the sexual organs; begins 



usually with the spore and ends with the sperms and eggs, 238, 244, 342, 



344, 354-358, 370-373, 37 6 , 382, 386, 402, 404, 410, 411, 4i8, 419- 

 Gamopetalous (Gam-o-pet'-al-ous), petals more or less united by their 



edges* 162, 170. 



Gamosepalous (Gam-o-sep'-a-lous), sepals united, 162, 170. 

 Generative cell, the cell in the pollen tube which divides to form the two 



sperm nuclei; also called body cell, or central cell of the antheridium 



(in angiosperms), 183, 200, 395, 400, 410, 411. 

 Geotropism (Ge-ot'-ro-pism), term used to express the property of roots and 



stems when influenced by the earth in their direction of growth, 27. 

 Glume, flowering; the lower bract which with the palet encloses the flower of 



the grasses, 173. 



Glume, usually applied to the empty chaff-like bracts at the base of the spike- 

 let in the grasses (Graminese), 173-177. 

 Gonidium (Gon-id'-i-um, plural, gonidia); sometimes applied to the algal 



cells in the lichen thallus, 273, 303; also same as conidium. 

 Gymnosperm (Gym'-no-sperm), naked seed, applied to the plants of the 



group to which the pines belong, 204, 387-404. 



Gynoecium (Gy-nce'-ci-um), the pistils of a flower taken collectively, 143. 

 Halophytes (Hal'-o-phytes), salt enduring, salt water plants, 458. 

 Haustorium (Haus-to'-ri-um, plural haustoria), an organ for the absorption 



of food material by parasites from their host, 136, 137, 285, 289, 309. 



