646 BOTANY or CROP PLANTS 



Keel. — Ridge, like the keel of a boat. 



Laciniate. — Cut into narrow, rather deep segments. 



Lamella. — Plate. 



Lanceolate. — Lance-shaped. 



Lemma. — The bract (glume) at the base of the flower in grasses. 



Lenticular. — Shaped like a double-convex lens. 



Lignified. — Woody; cell walls impregnated with lignin. 



Ligulate. — Strap-shaped. 



Ligule. — Appendage at juncture of sheath and blade in grasses, or, strap- 

 shaped corolla in Compositae. 



Linear. — ^Long and narrow, its sides nearly parallel. 



Lobed. — Divided to about the middle. 



Locule. — Cell cavity. 



Loculicidal. — Refers to capsules which split lengthwise through the middle 

 of each cell. 



Lodicules. — Small scales (inner perianth) surrounding the ovary in grasses. 



Lumen. — Cell cavity. 



Lyrate. — ^Lyre-shaped; the end lobe of pinnatifid leaf is much larger than 

 the rest. 



Marginal. — Along the edge or margin. 

 Median. — Middle. 

 Medulla. — Pith. 



Mericarp. — One-half of the fruit of Umbelliferae. 

 Mesocarp. — Middle layer of pericarp (ovary wall). 

 Mesocotyl. — Axis between base of coleoptile and grain, in grasses. 

 Micr'opyle. — The opening between the ovule or seed coats. 

 Microsporangium. — Anther sac; case bearing microspores. 

 Monxcious. — Staminate and pistillate flowers in different inflorescences 

 on same plant. 

 Mucronate. — With a sharp and abrupt point. 



Nerve. — Veins or ribs in bracts, scales, petals, sepals, etc. 

 Node. — The point on the stem from which a leaf or leaves arise; the 

 junction of two internodes. 

 Nucellus (megasporangium). — -The ovule tissue within the integuments. 

 Nutlet. — A small nut. 



Oh. — A prefix signifying inversion. 



Obcordate. — Heart-shaped, with broad end at the tij). 



