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Term	Definition
Basiscopic	Facing or directed toward the base. Opposite of acroscopic.
Basiscópica, basiscópico	Orientada hacia la base. Opuesto a acroscópica.
Basitonic	Referring to a type of branching in which the shoots nearest the base of the stem show the greatest development, as in the inflorescences of Hydrangeaceae.
Bat dispersal	Referring to diaspores that are carried away from the mother plant by bats. Most bat-dispersed seeds dispersed by bats have either berry-like fruits or fruits with the seeds provided with a fleshy associated structure such as an aril. A few other species have the fruits surrounded by a fleshy perianth (e.g., the diaspores of species of Cecropia). Same as chiropterochory.
Bat-pollination	Same as chiropterophily.
Baya	Fruto carnoso y jugoso que contiene desde varias hasta muchas semillas. Ver abayada.
Beak	A narrow or prolonged tip; often used to describe the apices of fruits or seeds.
Bearded	Referreing to a plant that has a tuft of hairs, usually on the lower petal.
Berry	A usually soft, fleshy or juicy, multiseeded, indehiscent fruit (e.g., Solanum spp., Solanaceae).
Bi-	A prefix meaning “two.”
Bi-	Prefijo que significa dos.
Bianual	Ver bienal.
Bienal	Planta que completa su ciclo de vida aproximadamente en dos años.
Biennial	A plant that completes its life cycle in two seasons. Compare with annual and perennial.
Bifacial	Referring to an organ with the opposite surfaces differing in color, texture, or structure; e.g., the anthers of Gronoviaceae, or to a leaf with two different types of tissue on each side, as observed in a transverse section.
Bifacial	Se refiere a un órgano con las caras opuestas que difieren en color, textura o estructura. Por ejemplo, las anteras de las Gronoviaceae, o a una hoja con dos diferentes tipos de tejidos en cada lado que se observan en secciones transversales.
Bifarious	Arranged in two vertical rows, such as ovules in an ovary or seeds in a fruit.
Bifid	Cleft into two often more-or-less acute lobes at the apex; for example, the apex of a leaf of Cyclanthus bipartitus.
Bífida, bifido	Se refiere al ápice de una hoja u otra estructura similar, cuando está dividida en dos lóbulos más o menos agudos en la porción distal; por ejemplo, el ápice de las hojas de Cyclanthus bipartitus (Cyclanthaceae)
Bifoliolada, bifoliolado	Es una hoja compuesta por dos hojuelas o segmentos.
Bifoliolate	Referring to a compound leaf with two leaflets.
Bifurcada, bifurcado	Estructura que se divide en dos partes iguales hacia el ápice, en forma de una "Y".
Bifurcate	Splitting into two equal parts at the apex; forked.
Bifurcate	Once-branched; for example the style of most species of Asteraceae have bifurcate styles. Same as bifid.
Big bang phenology	A flowering strategy in which a plant produces very large numbers of flowers for a very short period of time. See multiple bang and steady state phenology.
Bilabiada, bilabiado	Estructura que posee dos labios. Usualmente se refiere a los cálices y corolas zigomorfas, como las de las Lamiaceae.
Bilabiate	Two-lipped, usually referring to zygomorphic calyces and corollas such as those found in the Lamiaceae.
Bilabiate capitulum (head)	Inflorescence of Asteraceae with at least some bilabiate flowers. Restricted to tribe Mutisieae.
Bilaterally symmetric	Capable of being divided only into two equal parts; a structure (e.g., a flower) in which a line drawn through the middle will produce a mirror image of one side of the line to the other side of the line. Opposite of actinomorphic; same as bilaterally symmetrical and irregular.
Bilaterally symmetrical flower	A flower capable of being divided into only two equal parts (mirror images) by a line passing through the middle of a flower, i.e., other lines passing the middle of the flower will not give mirror images of one another; same as zygomorphic, monosymmetric, and irregular flowers and opposite of actinomorphic, monosymmetric, radially symmetrical, and regular flowers. This term can refer to other plant parts as well.
Bilocular	Having two locules.
Binomial nomenclature	A system used to name plants devised by Linnaeus in 1753 in his Systema Plantarum in which a two-parted name is given to a species of plant, i.e., the genus and the species. For example, Lecythis ollaria L. is a binomial name assigned by Linnaeus to this species.
Binucleate pollen	Referring to pollen grains that have two nuclei when shed from the anthers. Compare with trinucleate pollen.
Biofilm	A thin layer of living tissue found between a plant body and the substrate.
Biota	The totality of organisms found in a given environment.
Bipartite	Split into two parts.
Bipinnada	Dos veces pinnada; por ejemplo, las hojas de muchas especies de Fabaceae-Mimosoideae. Ver pinnada
Bipinnate, bipinnately compound	Twice-pinnate; e.g., leaves of many species of Fabaceae-Mimosaceae. See pinnate.
Biseriado	Se aplica a un perianto que posee dos verticilos, como cuando una flor posee cáliz y corola. Comparar con uniseriado.
Biseriate	Composed of two whorls or rows; e.g., a perianth with both calyx and corolla or a hair with two rows of cells. Compare with uniseriate.
Biseriate perianth	Referring to a perianth with two whorls or rows; i. e. with both calyx and corolla. Compare with uniseriate.
Bisexual flower	Referring to a flower with a functional androecium and a functional gynoecium. Same as perfect.
Bitégmico	Se refiere a los óvulos con dos integumentos.
Biternado	Dos veces ternado, en grupos de tres. Por ejemplo, las hojas de algunas especies de Serjania (Sapindaceae).
Biternate	Twice ternate, in two groups of three each; e.g., the leaves of some species of Serjania (Sapindaceae).
Bladder	A thin-walled, inflated, small sac found in species of Utricularia. The function of these sacs is to capture very small organisms, such as mosquito larvae, which are decomposed and the nutrients (e.g., nitrogen) released are then assimilated by the plant.
Bladder-like	Sac-like, inflated structures that surrounds seeds some structure, e.g., the fruits of plants such as Staphylea trifolia.
Blade	The expanded part of the leaf supported by the petiole
Blade	The expanded portion of a leaf or other structure such as a petal; when it is a leaf the stalkt is called the petiole and when it is a petal the narrowed part is the claw. Same as lamina.
Blaze	A slanted cut through the bark that reveals charcters useful in field identification of trees.

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