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Term Definition
Caducous Falling off very early.
Canaliculate A channel or groove that runs the length of a stucture such as a petiole or midrib. Used to describe petioles and midribs. Canaliculate and bifurcate veins of Dennstaedtia punctilobula. Photo by S. A. Mori.
-iform A suffix indicating similarity to another structure, e.g., cordiform (somewhat heart shaped). Canaliculate and bifurcate veins of Dennstaedtia punctilobula. Photo by S. A. Mori.
-phore (-phorus) A suffix meaning bearing, e.g. a gynophore which is a stalk that bears the gynoecium (chracteristic of Capparidaceae) and androgynophore which is a stalk bearing both the androecium and the gynoecium (characteristic of Passifloraceae). Medial section of a flower of Passiflora. Drawing by B. Angell.
a- A prefix meaning “without,” e.g., a leaf blade that does not have symmetry. Leaf symmetry. Drawing by M. Sashital.
Abaxial Referring to the side of an organ situated away from the axis; i.e., the morphologically lower surface of a leaf. Opposite of adaxial and same as ventral, under, and lower surface. Stem features and leaf orientation. Drawing by M. Sashital.
Abaxial The lower part of a structure such as a leaf, i.e., that part of a structure that faces away the main axis to which it is attached. For example, if a leaf is pushed upward and against a stem the surface facing away from the stem is the abaxial surface. Floral development of Bertholletia excelsa
Abaxial, abaxil Se refiere a el lado de un órgano que está situado más lejos del eje; por ejemplo, la superficie inferior de una hoja. Equivalente a ventral, superficie inferior; opuesto a adaxial Floral development of Bertholletia excelsa
Abayada, abayado Semejante a una baya. Floral development of Bertholletia excelsa
Abcisión Proceso en el cual una parte de una planta se cae o separa, por ejemplo: Las hojas. Floral development of Bertholletia excelsa
Abortion The process of arrested development. Floral development of Bertholletia excelsa
Aborto Proceso de desarrollo detenido. Floral development of Bertholletia excelsa
Abscission The process by which plant parts, such as leaves, are shed. Floral development of Bertholletia excelsa
Acanthophyll A spine derived from a modified leaf or leaflet; e.g, in spp. (Arecaceae). Acanthophylls of Desmoncus sp. Photo by R. Aguilar.
Acantófilo Hoja u hojuela modificada en forma de gancho o espina; por ejemplo, en spp. (Areaceae) Acanthophylls of Desmoncus sp. Photo by R. Aguilar.
Acaulescent Stemless or appearing stemless. Opposite of stemmed or caulescent. Acanthophylls of Desmoncus sp. Photo by R. Aguilar.
Acaulescente Sin tallo o aparentemente sin tallo. Término opuesto a caulescente o provisto de un tallo. Acanthophylls of Desmoncus sp. Photo by R. Aguilar.
Accessory fruit A type of fleshy fruit that includes some other part of the flower in addition to that which is derived from the ovary. Accessory fruits are usually indehiscent. Examples of this type of fruit are apples, figs, and strawberries. The fruit of a strawberry. Photos by S. A. Mori.
Accrescent Enlarging with age, usually referring to parts of an inflorescence or a flower; e.g., the spathe of some Araceae and the calyx of Chaunochiton kappleri (Olacaceae). The fruit of a strawberry. Photos by S. A. Mori.
Achene A small, dry, indehiscent, one-seeded fruit derived from a superior ovary with the seed attached to the fruit wall at one point only; e.g., species and . Compare with cypsela. Fruit of a species of Carex. Drawing by B. Angell.
Achlorophyllous Without chlorophyll; i.e., not green; a feature of saprophytes such as the species of Voyria (Gentianaceae), some species of orchids, the Triuridaceae, and the Burmanniaceae and of some parasites such as Helosis cayennensis (Balanophoraceae). Fruit of a species of Carex. Drawing by B. Angell.
Acicular Needle-shaped. Fruit of a species of Carex. Drawing by B. Angell.
Acicular Que tiene la forma de una aguja. Fruit of a species of Carex. Drawing by B. Angell.
Aclorófila Sin clorofila; por ejemplo: La parte transparente de una planta. Esta es una característica de las saprófitas, como las especies de (Gentianaceae), algunas especies de orquídeas, las Triuridaceae y las Burmanniaceae, y también de algunas parásitas como (Balanophoraceae). Fruit of a species of Carex. Drawing by B. Angell.
Acrescente Que se agranda o crece con la edad. Este término usualmente se refiere a las partes de una inflorescencia o de una flor; por ejemplo: La espata de una Araceae o al cáliz de (Olacaceae) Fruit of a species of Carex. Drawing by B. Angell.
Acródroma Se refiere al tipo de venas en una hoja, en el que dos o más venas primarias o las venas secundarias cuando están fuertemente desarrolladas se arquean desde o cerca de la base. El término perfectamente acródroma se utiliza cuando esas venas convergen cerca del ápice, por ejemplo: (Loganiaceae). Imperfectamente acródroma se utiliza cuando esas venas no convergen en el ápice. Fruit of a species of Carex. Drawing by B. Angell.
Acrodromous A leaf venation pattern in which three or more primary veins orginate from a point (usually at the attachment with the petiole) and run in convergent arches to the apex of the blade. Leaves of Dioscorea villosa. Photo by S. A. Mori.
Acronym An acronym is a code assigned by Index Herbariorum for the herbaria of the world with more than 5,000 collections; for example, the codes for The New York Botanical Garden (= NY), The Royal Botanic Gardens Kew (= K), and the Jardim Botânico do Rio de Janeiro (= RB) are provided. Home page of Index Herbariorum.
Acropétalo Que se desarrolla desde la base y en dirección hacia el ápice. Opuesto a basipétalo. Home page of Index Herbariorum.
Acropetalous Developing from the base toward the apex. Opposite of basipetalous. Home page of Index Herbariorum.
Acroscopic Facing or directed toward the apex. Opposite of basiscopic. Home page of Index Herbariorum.
Acroscópica Orientada hacia el ápice. Ver basiscópica. Home page of Index Herbariorum.
Acroscópico De frente al ápice o en dirección a este. Opuesto a basiscópico. Home page of Index Herbariorum.
Actinódromo Se refiere a un tipo disposición de las venas en una hoja, en el que tres o más venas primarias divergen radialmente desde un mismo punto. Home page of Index Herbariorum.
Actinomorfa Cuando una estructura al ser dividida en más de un plano, resulta en dos partes iguales. Este término usualmente es aplicado a las flores, e.g. en (Lecythidaceae) y a las especies de Myrtaceae. Actinomorfo es lo mismo que regular y radialmente simétrico. Es opuesto a zigomorfo. Flower of Gustavia brachycarpa. Photo by R. Aguilar.
Actinomorphic A plant structure capable of being divided, in more than one plane, into two equal parts that are mirror images of one another; this term is most often used to refer to flowers. Flower of Gustavia brachycarpa. Photo by R. Aguilar.
Actinomorphic flower A flower, capable of being divided, by more than one line passing through the middle of the flower, into two equal parts that are mirror images of one another; e.g., in (Lecythidaceae), species of Myrtaceae, and species of Rubiaceae. Same as polysymmetric, radially symmetrical, and regular flowers and opposite of zygomorphic, monosymmetric, bilateral, and irregular flowers. This term can refer to other plant parts as well. Flower of Gustavia brachycarpa. Photo by R. Aguilar.
Acuática, acuático Que crece o habita en el agua. Habit of Sagittaria guayanensis. Photo by R. Aguilar.
Aculeado Provisto de acúleos (aguijones). Habit of Sagittaria guayanensis. Photo by R. Aguilar.
Acúleo Un aguijón o una espina. Habit of Sagittaria guayanensis. Photo by R. Aguilar.