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Spring Flora of Oklahoma 
Leaflet—One of the divisions of a compound leaf. 
Leaf scar—The scar or cicatrix formed where the petiole of a leaf 
separates from the stem or twig. 
Legume—A simple, dry fruit dehiscent along both sutures. 
Lemma—The outer of the two flowering glumes inclosing a grass 
flower. 
Ligulate—Provided with or resembling a ligule; as a ligulate flower. 
Ligule—A strap-shaped organ. A triangular or somewhat elongated 
stipule-like organ on the leaves of Isoetes and Selaginella. 
Liliaceous—Lily-like. 
Limb—The expanded part of a petal, sepal or sympetalous corolla. 
Linear—A long and narrow organ with the sides nearly parallel. 
Lip—Each of the upper and lower divisions of a bi-labiate corolla 
or calyx. 
Lobed—Divided to about the middle or less. 
Loment—A jointed legume. 
Loculicidal—A capsule which splits longitudinally through the middle 
of the back of each cavity or component carpel. 
Lunate—'Crescent-shaped. 
Lyrate—Pinnatifid with the terminal lobe the largest. 
Marginate—Provided with a border or margin of distinct character. 
Monadelphous—Stamens with united filaments. 
Monecious—Having staminate and carpellate flowers on the same 
plant. 
Monocotyledonous—Having one cotyledon. 
Monoecious—Same as monecious. 
Muricate—With sharp points or prickles. 
Muriculate—Minutely muricate. 
Mucronate—With a sharp abrupt point. 
Mueronulate—Slightly mucronate. 
Nectary—A nectar-secreting organ. 
Node—The place where two internodes join, normally with a single 
leaf or more. 
Nut—An indehiscent one-seeded fruit with a hard or bony peri-carp. 
Nutlet—A very small nut. 
Ob—A Latin prefix indicating inversion. 
Obcordate—Inversely heart-shaped. 
Oblanceolate—Inversely lanceolate. 
Oblique—Unequal-sided or slanting. 
Oblong—Somewhat longer than broad with the sides nearly parallel. 
Obovate—Inversely ovate. 
Obsolete—Not evident; rudimentary. 
Obtuse—Blunt or rounded at the end. 
Ochreae—The sheathing united stipules of Polygonaceae. 
