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Term	Definition
Alate	With a thin, conspicuous ridge running down the length of a structure such as a stem, leaf rachis, ovary, or fruit. Same as winged.
Albumen	General term for the nutritive tissue of the seed located between the embryo and seed coat.
Albumen	Término general que se aplica en la semilla al tejido nutritivo que se encuentra localizado entre el embrión y la cubierta.
Albuminada (albuminosa)	Que tiene albumen.
Albuminate (albuminous)	With albumen
Alcaloide	Compuesto orgánico de base nitrogenada que frecuentemente se encuentra en las plantas tóxicas. Los alcaloides podrían proteger a las plantas de ser predadas por herbívoros. Algunos alcaloides como la cafeína que se encuentra en el café (Coffea arabica), son de importancia económica.
Alien	An animal, plant, or microbe that is introduced or naturally dispersed from one area into to another area. There are two types of alien plants, adentives that cause no apparent economic and ecological harm (e.g., the common mullein) and invasives that cause economic or ecological harm (e.g., the Japanese knotweed).
Aliform	Winglike; e.g., the seeds of many Bignoniaceae.
Aliforme	Como ala; por ejemplo, las semillas de muchas Bignoniaceae.
Alkaloid	An organic, nitrogen-based compound found in plants that are often somewhat toxic. Alkaloids may protect plants from predation by herbivores and others, such as the cafeine found in coffee (Coffea arabica), are of economic importance.
Allantoid	A solid form sausage-like in outline.
Alternas	Se aplica a las hojas que están dispuestas de manera solitaria en cada nudo en una rama. Comparar con opuestas y verticiladas
Alternate	Referring to leaves and other structures that arise from an axis singly at each node, the leaves can be either simple or compound. Compare with opposite and whorled.
Alternate leaves	Referring to leaves that arise from an axis singly at each node, the leaves can be either simple or compound. Compare with opposite and whorled.
Alternation of generations	Referring to the alternation of the haploid (n) and diploid (2n) generations of plants. In the lower plants (e.g., the bryophytes), the gametophyte generation is the dominant phase and the sporophyte generation depends on it for photosynthate. In contrast, in the higher plants (e.g., the flowering plants) the sporophyte generation is the dominant phase and the gametophyte depends on it for photosynthate.
Alveolada	Como un panal de abejas; por ejemplo, con fosas angulares separadas por septos delgados.
Alveolate	Like a honeycomb; i.e., with angular pits separated by thin, ridgelike partitions.
Alveolo	Una fosa pequeña y angulada, como las celdas de un panal de abejas.
Alveolus (plural = alveoli)	A small, angular pit like those of a honeycomb.
Ament	A spike with closely congested, often apetalous, unisexual flowers; e.g., staminate inflorescences of species of Betulaceae. Same as catkin. Aments are generally associated with wind pollination.
Amento	Racimo espiciforme denso de florecitas inconspicuas, generalmente unisexuales.
Amfisarco	Un fruto simple, indehiscente, cuyo pericarpo es externamente diferenciado en una corteza seca y al interior en una o más capas carnosas .
Amphisarcum (plural = amphisarca)	A simple, indehiscent fruit with the pericarp differentiated externally into a dry crust and internally into one or more fleshy layers.
Amphitropous	Referring to an ovule with a curved embryo sac in which the stalk (funicle) is curved such that the tip of the ovule and the base of the stalk are near one another. Compare with anatropous.
Amplexicalous	—
Amplexicaul (adj. = amplexicaulus)	Clasping the stem as do some stipules and leaf bases.
Amplexicaul (amplexicaulous)	Clasping the stem as do some leaf and stipule bases.
Amplexicaule	Abrazando al tallo, tal como la base de una hoja.
Anádroma, anádromo	Se refiere al patrón de las venas, en el que la primera vena de un segmento nace del lado hacia el ápice. Comparar con catádroma e isódroma.
Anadromous	Referring to a venation pattern in which the first vein in a given segment arises on the side of the leaf segment toward the apex.
Anastomosing	United to form a network; e.g., leaf veins or some aerial roots (e.g., strangler figs).
Anastomosis	Unido formando una red; por ejemplo, las venas de una hoja o algunas raíces aéreas, como en los estranguladores del género Ficus.
Anátropo	Se refiere a un óvulo con el embrión curvado hacia abajo de tal modo que el micrópilo esta cerca de la unión funicular. Comparar con óvulo anfítropo.
Anchoriform	Shaped like an anchor.
Ancipital, ancipitosa	Que posee dos bordes afilados.
Ancipitous	Two-edged, the edges sharp.
Ancoriforme	Con forma de un ancla.
Androceo	Término general para designar a las estructuras estaminadas de la flor (estambres y estaminodios). Comparar con gineceo
Androclino	En Orchidaceae, es la porción de la columna sobre la que nace la antera; el tejido columnar que rodea o cubre a la antera.
Androdioecy (androdioecious)	Referring to the sexual condition of a species that bears only staminate flowers on some plants but staminate and pistillate flowers or bisexual flowers on other plants.
Androdioica, androdioico	Se refiere a la condicion sexual de una especie que posee una plantas con solamente flores estaminadas y otras plantas con flores estaminadas y pistiladas o bisexuales
Androecial appendages	In the Lecythidaceae, any prolongation from the surface of the androecium; if there are fertile anthers on the appendage they are called a stamens, if there are normal appearing anthers that produce only fodder pollen they are called staminodes, if there are only rudimentary anthers or no anthers at all the appendages they are called vestigial stamens, and if they produce nectar they are called nectar-producing vestigial stamens.
Androecial hood	In the Lecythidaceae, the distal part of the ligule that has become modified either structurally by coiling inward or by the production of staminodes, vestigial stamens, or nectar-producing vestigial stamens. Androecial hoods are usuallly separated from the staminal ring by an appendage-free part of the ligule (the only known exception is Couroupita nicaraguarensis and perhaps a species of the Lecythis sec. Pisonis group not yet identified. Androecial hoods of Lecythidaceae vary according to their degree of structural complexity and the type of androecial appendages they possess.
Androecial hood	In zygomorphic-flowered Lecythidaceae with ligules, the distal part of the ligule that has become modified either by the outgrowth of appendices (= staminodes, vestigial stamens, or nectar-producing vestigial stamens), by an abrupt change in direction of the ligule, or by both. Androecial hoods are usuallly separated from the staminal ring by an appendage-free part of the ligule (the only known exception is Couroupita nicaraguarensis and perhaps a few species of the Lecythis sec. Pisonis group. Androecial hoods of Lecythidaceae vary according to their degree of structural complexity and the type of androecial appendages they possess.
Androecial hood appendages swept inward	A androecial hood type in which appendages arise from an expanded apical or subapical part of the ligule from where they curve into the flower but do not form a coil (e.g., as in species of Eschweilera). The appendices are always more or less fused together at their bases. If the expanded part of the hood is subapical and the ligule extends beyond the thickening, the extension is called the anterior ligular extension. Do not confuse this term with curved appendages (see definition)
Androecial hood double-coiled	The androecial hood is coiled twice inward.
Androecial hood flat	The androecial hood is not curved or coiled inward at all
Androecial hood flat, thick	The androecial hood, as seen in medial longitudinal section, is thickened dorsiventrally.
Androecial hood flat, thin	The androecial hood is not curved or coiled inward and it is not thickened as viewed in a medial longitudinal section.
Androecial hood horizontally oriented (= hood horizontally oriented)	An androecial hood with the first coil oriented at more-or-less 90 degrees to the main axis of the flower.
Androecial hood obliquely oriented (= hood obliquely orientated)	An androecial hood that is oriented at an angle less than 90 degrees to the main axis of the flower.
Androecial hood once-coiled	The androecial hood turns inward once
Androecial hood split	A separation of the androecial hood into a posterior hood extension and an anterior hood extension.
Androecial hood triple-coiled	The androecial hood makes three turns inward
Androecial hood: Bertholletia-type	The Bertholletia-type of androecial hood has appendages that are swept back into the interior of the hood which are called vestigial stamens; these appendages do not have anthers.
Androecial hood: Corythophora alta-type	A thickened hood, bearing staminodes.
Androecial hood: Couratari-type	The androecial hood has an extra external flap found only in species of Couratari.
Androecial hood: Couroupita guianensis-type	In this type of hood, there is an appendage-free area between the staminal ring and the androecial hood proper. The appendages bear normal looking anthers but they contain fodder pollen (=staminodes) and the hood is slightly thickened.
Androecial hood: Couroupita subsessilis-type	This type of androecial hood has three features: 1) an invagination, 2) a notch on the distal end as viewed from above, and 3) staminodes.
Androecial hood: Eschweilera-type	In this type of hood, the interior of the hood forms an inward coil and the vestigial stamens at the end of the coil are nectar-producing.
Androecial hood: Lecythis corrugata-type	In this type of androecial hood, the hood is flat and thickened, there are no appendages with anthers on the hood, and the vestigial stamens are poorly developed.
Androecial hood: Lecythis idatimon-type	The androecial hood is flat and there are only vestigial stamens representing the appendages of the hood.
Androecial hood: Lecythis ollaria-type	This type of androecial hood turns inward but does not form a complete coil, the vestigial stamens are all the same size, and lack anthers; thus, they are called vestigial stamens.
Androecial hood: Lecythis persistens subsp. persistens-type	The androecial hood of this type is flat and the appendages of the hood are with anthers that bear fodder pollen and, thus, are called staminodes
Androecial hood: Lecythis pisonis-type	The androecial hood is separated from the staminal ring, the hood is flat, and there are staminodes proximally and vestigial stamens distally.
Androecium (pl. = androecia)	The male part of the flower.
Androecium (plural = androecia)	The collective term for the staminate structures (i.e., the stamens and staminodes) of a flower; the stamens as a unit.
Androecium actinomorphic	Capable of being divided in more than one plane into two or more equal halves; usually, but not always, used to describe flowers.
Androecium zygomorphic	The prolongation of one side of the androecium of all species of Cariniana, Couroupita, Corythophora, Bertholletia, Couratari, Eschweilera, and Lecythis.
Andróforo	Rabillo elevado sobre el punto de unión del perianto que sostiene a los estambres; por ejemplo, los filamentos unidos de las especies de Menispermaceae y Myristicaceae
Andrógina, andrógino	Se refiere a las inflorescencias que poseen flores estaminadas y pistiladas a la vez; por ejemplo, las inflorescencias de Mabea (Euphorbiaceae), con una o pocas flores pistiladas hacia la base y numerosas flores estaminadas hacia la porción distal.
Androginóforo	Estructura linear u oblonga que está sobre el receptáculo y que porta al androceo y gineceo; por ejemplo, Passiflora (Passifloraceae)
Androgynophore	A stalk that is elevated above the point of perianth attachment and supports the androecium and gynoecium; e.g., species of Passifloraceae.
Androgynous	Referring to inflorescences with both staminate and pistillate flowers, e.g., the inflorescences of Mabea (Euphorbiaceae) with one or a few pistillate flowers at the base and numerous staminate flowers distally.
Andromonoecy (andromonoecious)	Referring to the sexual condition of a species that bears staminate and bisexual flowers on the same plant; in the Mimosaceae, referring to the presence of staminate and pistillate flowers in the same cluster.

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