xviii 



GLOSSARY. 



Epicotyl. — The portion of the seedling-axis above the cotyle- 

 dons. 



Epigseal (of cotyledons). — Appearing above the ground. 

 Epiphyllous. — Occurring on the leaf. 



Epiphyte. — A plant which grows upon the surface of the stem 

 or leaf of another plant, but obtains its food-supplies 

 independently. 



Erosion. — The deep, rounded marginal incision of a leaf, as if 



bitten out. 

 Etiological. — Relating to causes. 



Exogenous. — Having a non-embedded origin from the external 

 tissues. 



Extra-axillary. — Relating to a branch arising on the stem 

 away from an axil. 



Fasciation. — Multiple forking of an axis ; ribbon- or fan- 

 growth of an axis. 



Fission. — Splitting, division . 



Foveolar. — Furnished with pit-like cavities. 



Gametophyte. — A plant of the sexual generation. 



Gamopetalous. — Having the petals congenitally united. 



Gemmze. — Vegetative reproductive buds which become de- 

 tached from the parent and grow into independent plants. 



Geophilous. — Having a short, squat stem bearing relatively 

 large dominating leaves. 



Germ-plasm. — Non-specialized protoplasm which is capable of 

 giving origin to a new individual plant. 



Gland. — A secretory structure of the nature of a hair, or an 

 emergence. 



Glumes. — The scarious bracts and floral leaves of the grasses. 

 Haulm. — The shoot of a grass. 



Haustorium. — A rout modified for the purpose of absorption 



from the tissues of another organism. 

 Heliotropic. — Turning towards the light. 



Hermaphrodite. — Possessing both male and female sexual 



organs in the same flower or on the same thallus branch. 

 Heterophylly. — The phenomenon in which more than one type 



of foliage occurs in the same species. 

 Homogenic. — Of the same essential nature because of identity 



of proximate descent. 

 Homologous. — Of the same essential nature because of common 



origin from the same ancestral organ. 

 Homophylly . — The phenomenon in which only one type of 



foliage occurs in the species. 

 Hymenium. — That part of the fungal tissue which is modified 



to produce spores. 



