GLOSSARY. 255 



HYBRIDIZE To produce a crossing between two species. 

 HYPHAE The long branching filaments of which the mycelium of a fungus- 

 is formed. 



IMBIBITION The act of absorbing. 



INDENTATION A notch or recess in the margin of a leaf. 

 INDENTED Notched along the margin ; cut on the edge into points, like 



teeth. 



INFLORESCENCE The mode of arrangement of the flowers of plants. 

 INTERNODE The space between two nodes or points of the stem from which 



the leaves properly arise. 



INTERSTICES Spaces between closely set soils or rocks. 

 INTRINSIC Real, inherent, not merely apparent or accidental. 

 INULIN A substance found dissolved in the sap of the roots of many Com- 

 posite and other plants. It is intermediate in nature between starch 



and sugar. 

 JURASSIC (Geol.) Of the age of the middle Mesozoic, named from certain 



rocks in the Jura mountains. 



JUXTAPOSITION Being placed side by side with opposite parts corres- 

 ponding. 

 KNIT United ; joined, so as to grow together. Used as a noun, mean* 



the parts joined together ; the union. 

 LACUSTRINE DEPOSITS (Geol.) The deposits which have been accumulated 



in fresh water areas. 



LAMINATED STRATA (Geol.) Divided into thin layers. 

 LANCEOLATE LEAF Rather narrow, tapering to a point at the apex. 

 LANCINATED Torn ; lacerated. 

 LANIGEROUS Bearing woolly hair. 

 LANUGINOUS Covered with down. 

 LENTICLES (Bot.) Small, oval, or rounded spots upon the stem or branches 



of a plant. Small lens-shaped glands on the under face of some 



leaves. 

 LESION Change in the texture of a vegetable organ resulting from an 



injury. 



LIBER The inner bark of plants, lying next to the wood. 

 LIGNEOUS (Bot.) Of the nature of, or resembling wood. 

 LIGNIFI CATION ( Bot. ) Change in the character of an herbaceous shoot by 



which it becomes harder or woody. 



LIGNIFIED (Bot.) Converted into wood or into ligneous substance. 

 LIMB, of a leaf (Bot.) The flat part of the leaf of any plant. 

 LITTORAL Bordering the seashore 

 LOAM A soil formed of a mixture of clay and sand with organic matter, to 



which its fertility is chiefly due. 

 LOBATED or LOBATE (Bot.) Having lobes. 

 LOBE A rounded projection or division of a leaf. 

 MARGIN, of a leaf The outer edge or border. 

 MARL A mixed soil, consisting of carbonate of lime, clay, and sand in very 



variable proportions, and accordingly designated as calcareous, clayey, 



or sandy. 

 MEDULLARY RAYS (Bot.) The rays of cellular tissues seen in a transverse 



section of exogenous wood, which run from the pith to the bark. 

 METIS The offspring of the union of two varieties of the same species. 

 METIZATION The act of producing a crossing bet .veeii two varieties of the 



same .species. 



MIOCENE (Geol.) Middle division of the tertiary. 

 MORPHOLOGY The law of form or structure, independent of function. 

 MUCRO (Bot.) A minute, abrupt point of a leaf. 

 MYCELIUM (Bot.) The white threads or filamentous growth from which a. 



mushroom or fungus is developed ; the so-called mushroom spawn. 



