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Lophate
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Referring to a type of pollen ornamentation in which the exine is raised in a network of ridges surrounding depressions. |
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Lorate
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Referring to a two dimensional shape in which the greatest width extends throughout a middle zone at least one-third the length of the blade (in this zone the margins are more-or-less parallel) and the length to width ratio is 6:1 to less than 10 . Same as strap-like. |
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Loriforme
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Con forma de cinturón. Se refiere a la forma de una lámina de una hoja, que es larga, angosta, plana y cuyas márgenes son paralelas |
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Lower
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See abaxial. |
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Lower septum
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A wall-like partition of a locule located basally to an articulation (often only seen as a thin line), as seen in longitudinal section, that separates it from an upper septum. |
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Lower/upper septum
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Referring to the combined lengths of the lower and the upper septa as seen in longitudinal sections. The two septae are divided by a septal articulation. The lower septa gives rise to the placenta and the upper septum develops into the columella of the fruit. |
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Lower/upper septum articulation
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A joint between the lower septum and the upper section as seen in a longitudinal section of the ovary. |
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Lumper
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A person (usually a plant taxonomist) that recognizes species of plants with considerable morphological variation included in their concept of species. This often results in placing other names, which may even represent valid species in themselves, in synonymy of the name used by the author for the species being described, this is called lumping species. |
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Lunate
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Crescent- or half-moon shaped. |
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Lustrous
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Shiny. |
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Lutescent
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Becoming yellow. |
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Lycopod
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Referring to a vascular plant group that does not produce seeds. Lycopodium, Isoetes, and Selaginella are in this group but belong to different orders. Lycopodium is homosporous and the other two genera are heterosporous. |
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Lysigenous
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Referring to an intercellular space caused by the dissolution of cells. |
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Macaronesia
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The geographic region including five island groups off the northwest coast of Africa: Azores, Madeira, Canary Islands, Cape Verde Islands, and Salvages. |
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Macrophyte
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A plant large enough to be seen with the naked eye; often used to distinguish between vascular and nonvascular aquatic plants. |
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Macropodial embryo
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A solid embryo without differentiated cotyledons; e.g., in Lecythis spp. (Lecythidaceae) and Monstera spp. (Araceae). |
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Macula (maculate)
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A spot or blotch (a structure with spots or blotches). |
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Macula (pl. = maculae, adj. = maculate)
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A spots or a blotches, usually leaves, with a color other than green (often white).. |
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Magnoliophyta
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The scientific name of the phylum of vascular plants that bear flowers. |
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Magnoliopsida
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The scientific name of the paraphyletic class of vascular plants that produce flowers and seeds usually with two cotyledons, also known as the dicotyledons. |
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Male flower
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Referring to unisexual flowers with functional stamens but without functional gynoecia (pistillodes may be present). Same as pistillate flower. |
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Malesia
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The geographic region including six southeastern Asian countries: Indonesia, Malaysia, Singapore, Brunei Darussalam, the Philippines, and Papua New Guinea. |
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Malpighiaceous trichomes
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Hairs that are unicellular, appressed, and attached by the middle; common in the Malpighiaceae, in which they can be T-shaped or Y-shaped. |
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Many
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In botanical descriptions, meaning more than 10. Same as numerous. If a description says "stamens many" it means that there are at least 10 of them. |
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Marcescent
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Withering but persisting; e.g., a wilted corolla that persists on the fruit. |
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