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Lithophyte
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A plant growing on rocks. |
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Liverwort life cycle
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Referring to the alternation of generations between the gameophyte (haploid) and sporophyte (diploid) stages of a liverwort. The most conspicuous stage of the life cycle is the gametophyte generation whereas the sportophyte generation is small and inconspicuous. |
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lobe (lobed, lobate)
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A rounded projection arising from the margin or base of two dimensional structures such as leaves and bracts. |
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Lóbulo corolino
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Es cada uno de los segmentos más o menos libres que están en la porción terminal de una corola gamopétala (o simpétala) |
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Locule
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A chamber or cavity, such as that of an ovary or fruit that contains the ovule(s) or seed(s). |
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Locule
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A chamber, such as that of an ovary or fruit, that contains the ovule(s) or seed(s), respectively. |
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Locule orientation
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Locule orientation with the longest axis of a locule to the central axis of an ovary as seen in a medial longitudinal section. |
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Locule orientation horizontal
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A locule oriented with the greatest length more-or-less at right angles to the long axis of the ovary, i.e., at a right to the upper/lower septum as seen in longitudinal section. |
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Locule orientation oblique
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A locule with the greatest length more-or-less paralleling the long axis of the ovary, i.e., parallel to the upper/lower septum as seen in longituindal section. |
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Locule orientation vertical
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A locule with the greatest length more-or-less paralleling the long axis of the ovary, i.e., parallel to the upper/lower septum as seen in longituindal section. |
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Locule width at apex
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The position at which the locule's greatest width is near the apex of the locule as viewed in a medial longitudinal section. |
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Locule width at middle
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The position at which the locule's greatest width is in the middle of the locule as viewed in a medial longitudinal section. |
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Locule width throughout
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The position at which the locule's greatest width is equal through much of the locule as viewed in a medial longitudinal section. |
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Loculicidal capsule
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A dry, dehiscent fruit that opens in the middle of the locule. Compare with septicidal capsule. |
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Lodicule
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A small, colorless scale appressed to the ovary of most Poaceae that may represent a vestige of the perianth. |
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Loment
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A type of legume fruit in which each single-seeded segment breaks away from adjacent segments; e.g., in Desmodium (Fabaceae). |
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Lomentiform
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Like a loment. |
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Longitudinal section
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A cut along the long axis of an organ but not necessarily through the middle of the organ. Compare with medial section. |
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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 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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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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