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Term	Definition
Admedial	Toward the axis of any structure, especially used to describe leaf venation.
Admedial	Dirigido hacia el eje de una estructura. Término especialmente utilizado para describir el patrón de venas en una hoja. Opuesto a exmedial.
Adnado	Se refiere a la fusión de estructuras de dos tipos, como los estambres a la corola o las estípulas a los peciolos. Comparar con connado
Adnate	Referring to the attachment of one type of structure to another type of structure, as the stamens to the corolla or the stipules to the petiole.
Adpresa, adpreso	Se refiere a una estructura que está dispuesta sobre otra estructura, por ejemplo: Un tricoma que está en el lado abaxial de una hoja o un cáliz que está apretado sobre un fruto, como en Priva lappulacea.
Adpressed	Referring to one structure that is tightly positioned against another structure, e.g., a trichome pressed tightly against the abaxial leaf blade surface or the calyx tightly pressed against the fruit of Priva lappulacea.
Adventicio	Se refiere a un órgano que se encuentra en una posición inusual, especialmente brotes o raíces; por ejemplo: Las raíces aéreas de una Araceae.
Adventitious	Referring to an organ arising from an unusual position, especially buds or roots; e.g., the aerial roots of species of Araceae.
Adventitious roots	Roots arising directly from a part of the plant other than the primary root, e.g., the roots that arise from the base of the stem of a corn plant (Zea mays) but adventitious roots can also arise from other parts of a plant.
Adventiva	Se refiere a una especie de planta o animal que se ha establecido en una región de la cual no es nativa.
Adventive	Referring to a plant or animal that has become established in a region to which it is not native but does not cause noticible economic or ecological harm.
Aerenchyma	Tissue with large,intercellular, air-filled spaces; e.g., in the petioles of many species of Araceae and in the roots, stems, and leaves of many aquatic plants.
Aerénquima	Tejido con grandes espacios intercelulares llenos de aire; por ejemplo, en los pecíolos de muchas especies de Araceae, y en las raíces, tallos y hojas de muchas plantas acuáticas.
Aerial roots	Adventitious roots of lianas and hemiepiphytes in the forest canopy that ultimately anchor in the ground or some other substrate; e.g., some species of Clusia (Clusiaceae) and Philodendron (Araceae). The aerial roots of some species are split and used to make baskets, furniture, hats and as rope to tie together temporary shelters.
Aerial tuber	A tuber that arises from an aerial root in contrast to a true tuber which arises from underground roots or stems.
Aestivación	Disposición de las partes del perianto en un botón floral.
Aestivation	The arrangement of the parts of the perianth in the floral bud.
Aggregate fruit	A fruit formed by the coalescence of carpels that were distinct (apocarpous) in flower; e.g., Rubus (blackberry) and Fragaria (strawberry)..
Aguajal	A Spanish name referring to a palm swamp dominated by moriche palms Mauritia flexuosa. Same as morichal in Spanish and burital in Portuguese.
Agudo	Término usualmente aplicado al ápice de estructuras laminares (como en las hojas) en el que los dos lados son rectos y cuando se interceptan forman un ángulo de menos de 90°. Comparar con acuminado y obtuso.
Aguijón, acúleo	Proyección puntiaguda y más o menos cónica del tejido superficial de un tallo; por ejemplo, aquellas localizadas en el tronco y ramas de Ceiba pentandra (Bombacaceae), Jacaratia spinosa (Caricaceae) y la de los tallos de Smilax spp. (Smilacaceae). Comparar con espina
Ala de la columna	En las Orchidaceae, se refiere al ensanchamiento usualmente lateral y hacia el ápice de la columna, a veces podría estar curvado hacia arriba o abajo.
Alada	Este término se aplica a frutos y semillas que poseen estructuras semejantes a alas, es decir con una o varias proyecciones delgadas y planas que ayudan a su dispersión por viento. Este término también se aplica a delgadas proyecciones longitudinales que están a lo largo de alguna estructura, como un tallo, peciolo, cáliz, etc...
Alantoide	Que tiene forma semejante a la de una morcilla.
Alate	Refers to a band of tissue running the length of a structure; = winged.
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.

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