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An alphabetical listing of General terms and items. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Lacerate   Unevenly cut or incised. Laciniate   Deeply and sharply slashed into slender segments. Laciniated   With a fringed border. Lacuna   Defined space. Lamellae   Thin flat plates or laterally flattened ridges. Lamina   Blade, usually of a leaf. Lanate   Densely white woolly-pubescent. Lanceolate   Lance-shaped, broadest below the middle, long-tapering above the middle, several times longer than wide. Lanuginose   Woolly or cottony; downy, the hairs somewhat shorter than in lanate. Lanulose   Very short-woolly. Lateral   Pertaining to the sides. Latex   The milky juice (or highly colored juice) of some plants. Latifoliate   Having broad leaves. Lax   General term meaning open, loose, without clear form or shape, or scattered, depending on the context. Leaf   Usually a blade-like organ attached to the stem, often by a petiole or sheath, and commonly functioning as a principal organ in photosynthesis and transpiration. Leaves characteristically subtend buds and extend from the stem in various planes. See also leaflet. A leaf axil is the upper angle between a leaf petiole, or sessile leaf base, and the node from which it grows. A leaf scar is formed on a twig following the fall of a leaf, usually revealing the pattern of vascular bundles in the leaf trace. Leaflet   One of the discriminate segments of the compound leaf of a dicotyledonous plant. Leaflets may resemble leaves, but differ principally in that buds are not found in the axils of leaflets, and that leaflets all lie in the same plane. Leaflets   When there are several succeeding leaves on each side of a midrib; a little leaf. Legume   The fruit in the Fabaceae family, produced from a one-celled ovary, and typically splitting along both sutures; as in the pea pod. Leguminous   Bearing seeds which split into halves like the pea. Lemma   The lowermost of the two scales forming the floret in a grass spikelet -- the uppermost, less easily seen, is called the palea. Back to top Lenticel   A corky spot on young bark, corresponding functionally to a stoma on a leaf. Lenticular   Lens-shaped; two-sided, with the faces convex. Lepidote   Surfaced with small scurfy scales. Ligneous   Woody. Ligulate   Bearing a ligule. Ligule   In the Asteraceae family, pertaining to the dilated or flattened, spreading limb of the composite ray flower; in other families, such as Poaceae family, an extension, often scarious, of the summit of the leaf sheath. Limb   The expanded portion of a corolla above the throat; the expanded portion of any petal. Linear   Very long and narrow, with nearly or quite parallel margins. Lip   Referring to either the upper or lower lip of a bilabiate corolla; the principal, seemingly lower, petal in the Orchidaceae. Lobe   Any segment or division, particularly if blunt. Lobulate   Bearing lobes. Locular   Having locules. Locule   A discriminate cavity or space within an ovary, fruit, or anther. Loculicidal   Pertaining to a capsule which dehisces along the dorsal suture of each locule, thus opening directly into the cavity. Locus   Place. Loment   Specifically applied to the series of one-seeded articles of a fruit in the genus Desmodium. Longiligulate   With long ligules. Lustrous   Shiny. Lyrate   Pinnately lobed into large, broad lobes, the terminal one typically noticeably larger than the reduced lateral ones. Back to top