Displaying 1926 - 1975 out of 3058 Object(s)

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Term	Definition
Nervadura eucamptódroma	Se refiere al tipo de disposición de los nervios en una hoja en la que los nervios secundarios no terminan en el margen y no se unen para formar una serie de arcos promimentes a manera de un nervio submarginal. Comparar con nervadura broquidódroma.
Nervadura, venación	Disposición o patrón de tejido vascular (nervios) en una hoja u órgano vegetal
Nervio colector	Nervio que recorre muy cerca del margen de una hoja, conectando las venas secundarias; como en muchas especies de Anthurium (Araceae).
Nervio intersecundario, nervios intersecundarios	Nervios que son intermedios en tamaño entre los nervios secundarios y terciarios; a menudo corren paralelos a los nervios secundarios.
Nervio intramarginal, nervios intramarginales	Nervio que está cerca y paralelo al margen de una hoja.
Nervio lateral, nervios laterales	Equivalente a nervios secundarios.
Nervio primario	Ver nervio principal
Nervio principal	Es el nervio primario de una hoja, bráctea, sépalo o pétalo. Equivalente a costa.
Nervio secundario, nervios secundarios	Son los nervios de segundo orden en una hoja. Se generan de los nervios primarios (Hickey, 1973).
Nervio terciario, nervios terciarios	Son los nervios de tercer orden en una hoja. Se generan de los nervios secundarios (Hickey, 1973).
Nervios palmeados	Se refiere a la disposición radial de los nervios en una lámina, en la que los nervios nacen de un punto común cerca de la base
Nervios paralelos	Este término generalmente se aplica a los nervios secundarios y/o terciarios, cuando están dispuestos de manera paralela entre sí. También se aplica a las márgenes de las hojas, sépalos y pétalos.
Nervios reticulados	Se refiere a los nervios de una hoja que tienen forma de una red, generalmente a los nervios de tercer orden
Nervios secundarios	Son aquellos nervios que nacen del nervio primario en una hoja. Equivalente a nervios laterales
New combination (= combination novum.)	A named formed from a previous name. Usually a new combination involves moving a species epithet from one genus to another genus. For example, the species Cariniana decandra Ducke was considered to be a species of Allantoma by Huang et al. ((2008) so they coined the new combination Allantoma decandra (Ducke) Huang et al.. Note that the name of the author of the original name is retained in parentheses as part of the new name.
Niche	The ecological role of a species in a community.
Nigrescent	Becoming black.
Nitid	Shiny or lustrous.
Nocturnal	Appearing at night, e.g., the flowers of a bat-pollinated species.
Nocturnal	Appearing at night, e.g., the flowers of a bat-pollinated species.
Node	The part of the stem where buds, leaves, and or adventitious roots are produced.
Nodes swollen	Refferring to nodes that are larger in size than the stem; swollen nodes are especially characteristic of Piper (Piperaceae).
Nomenclature	Activities associated with naming plants, e.g., for example describing new species and determining synonymy.
Non-cylindrical fruit	A fruit that is as long as broad or is shorter than broad.
Non-cylindrical fruit	A fruit that is as long as broad or is shorter than broad.
Non-resupinate	Turned 180° in development; e.g., flowers of most orchids in which the lip originates in the uppermost position but twists in such a way that the labellum faces downward at anthesis. Some orchids do not twist, thus the labellum faces up at anthesis.
Nucellus	The tissue that surrounds the megasporophyte or the embryo sac. It is located between the embryo sac and the integument or integuments.
Nucellus	The tissue that surrounds the megasporophyte or the embryo sac. It is located between the embryo sac and the integument or integuments.
Nuciform	Nut-shaped.
Nuclear endosperm	Endosperm development in which many nuclei develop before cell walls are formed.
Numerous	With 10 or more parts. See many.
Nut	A hard, indehiscent, unilocular, single-seeded fruit arising from a simple or compound ovary.
Nutant	Nodding,
Nutant	Nodding.
Nutlet	A small nut; often used to refer to one of the four parts of the mature fruit of some species of Boraginaceae, Lamiaceae, and Verbenaceae.
Nutritional mode	The way a plant gets its food, e.g., photosynthetic, parasitic, hemiparasitic, mycoheterotrophic, etc.
Ob-	A prefix meaning opposite or against, e.g., an obovate leaf blade is the opposite of an ovate leaf blade.
Obcompressed	Vertically (rather than laterally) compressed.
Obcordate	Shaped like an upside down heart.
Obdiplostemony (obdiplostemonous)	With two series of stamens with twice the number of stamens as petals and those of the outer series inserted opposite the petals and those of the inner series inserted opposite the sepals. Obdiplostemony is sometimes very difficult to determine in flowers at anthesis but become apparent with microtome and SEM studies of bud development (Endress, 2010).
Oblanceolada	Con forma lanceolada invertida. Se refiere a la forma de una lámina de una hoja u otra estructura similar, cuando es más ancha hacia la porción distal, sus márgenes son divergentes y cuya relación longitud/ancho es 3:1 o mayor
Oblanceolate	Referring to a leaf, bract, sepal, petal, or other structure in which the greatest width is distal to the midpoint and the length-to-width ratio is 3:1 to less than 6:1.
Oblate	Spheroidal but flattened at the ends; i.e., slightly broader than long. With the widest point at the middle and the length to width ratio 0.75/1 or less. This term can also refer to both three-dimensional a two-dimensional shapes.
Oblate	A sphere that is flattened at both poles or a sphere that is shorter in height than it is in width. The term can refer to both three- and two-dimensional shapes.
Oblique	Referring to a leaf base or similar structure in which the two sides are unequal.
Obliquely zygomorphic	An extension from the abaxial side of the androecium of Cariniana.
Oblong	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 2:1 to less than 3:1. Other types of oblong shapes are determined by the length to width ratio.
Oblonga	Se refiere a la forma de una lámina de una hoja u otra estructura similar, cuando posee márgenes paralelos cuya extensión es al menos un tercio de la longitud total de la lámina
Oblongoid	A solid form oblong in outline or visualized as a cylinder but more-or-less rounded at the base and the apex.
Obovada	Se refiere a la forma de una lámina de una hoja u otra estructura, cuando la parte apical es más ancha que la parte basal y cuya relación longitud/ancho es menor que 3:1

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