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Introrse
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Directed inward, as the dehiscence of an anther. Compare with extrorse and latrorse. |
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Intruded placenta
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A parietal placenta that penetrates into the locule such that the placentation appears to be axile; e.g., in some species of Flacourtiaceae. |
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Invasive
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A species of plant, animal, or microbe from one area that is introduced into an area where it was not present before and once established in the new habitat it causes economic damage, outcompetes native species thereby causing them to become less common, causes native species to be extirpated from some areas, or drives native species to extinction. |
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Involucre (diminutive = involucel)
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A series of fused, overlapping, or free bracts that subtend inflorescences (e.g., in some Apiaceae, many Asteraceae, and Euphorbia of the Euphorbiaceae) or flowers (e.g., the female flowers of species of hickory (Carya spp.). |
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Involucrum
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An adherent group of hairs arising from the style head in the Apocynaceae and often forming a ring that closes off the corolla. Sometimes called the ring. |
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Involute
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With the margin inrolled toward the adaxial surface as in the leaves of many Commelinaceae (e.g., Dichorisandra) and some Araceae such as Anthurium jenmanii. Compare with revolute and supervolute. |
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Iridoid
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Like an iris or a member of the iris family (Iridaceae). |
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Irregular
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Ver zigomorfa |
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Irregular flower
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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 bilaterally symmetrical, flowers and opposite of actinomorphic, monosymmetric, radially symmetrical, and regular flowers. This term can refer to other plant parts as well. |
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Iso-
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A prefix meaning equal or like. |
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Isocotylar cotyledons
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Cotyledons that are morphological identical |
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Isocotylous
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Referring to seedlings in which both cotyledons are similar in shape and size. Compare with anisocotylous. |
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Isodiametric
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Referring to cells with equal diameters throughout; i.e., approximately spherical in shape. |
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Isódroma, isódromo
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Se refiere al patrón de las venas, en el que las primeras dos venas de un segmento nacen opuestas la una con relación a la otra. Comparar con anádroma y catádroma. |
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Isodromous
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Referring to a venation pattern in which the first two veins in a given leaf segment arise opposite one another. Compare with anadromous and catadromous. |
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Isomorphic
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Referring to structures or organs in species or individuals that are similar in form and size. Opposite of heteromorphic and anisomorphic. |
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Isophyllous
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Having leaves all of one shape and size. Same as homophyllous. |
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Isotype
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A duplicate of the holotype. If a collection selected as the holotype has duplicates, the duplicates are called isotypes. |
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Isthmus
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A thin, constricted connection between parts of an organ or structure; in the Orchidaceae referring to a narrow portion of the lip common in species of Oncidium. |
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Iteropary (iteroparic or iteroparous)
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Referring to plants that flower repeatedly; i.e., those that do not die after a single flowering. Same as polycarpic and pleionanthic; opposite of hapaxanthic and monocarpic. |
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Jaculator
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A hooklike structure derived from the funicle of many Acanthaceae that aids in dispersal by ejecting the seed from the fruit. Same as retinaculum. |
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Jardín de hormigas
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Una bola de raíces habitada por hormigas que se forma en ciertas especies de plantas epífitas. |
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Jugum (plural = juga)
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A pair of leaflets on a pinnately compound leaf. |
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Keel
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Ridged like the bottom of a boat; same as carinate.The two lower, united petals of the flower of most species of Fabaceae subfamily Papilionoideae. |
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Keeled
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Bearing a keel, same as carinate. |
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Keystone species
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A species that plays a role in the survival of other species, such as by providing a source of food; e.g., species of Ficus (Moraceae). |
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Labellum
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Same as lip. |
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Labelo
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Ver labio. |
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Labiate
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Lipped; i.e., referring to plant parts that are shapped like lips; of or pertaining to the Lamiaceae (mint family). |
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Labio
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En las Orchidaceae es el pétalo del medio. Este usualmente está altamente modificado y es diferente a los dos pétalos laterales restantes. El labio de las orquídeas usualmente juega un papel importante en la polinización; también es una de las dos partes de una corola bilabiada, por ejemplo, en las Lamiaceae. |
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Lacerate
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Torn, irregularly cut or divided, usually referring to the margin of a structure. |
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Laciniate
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Cut into narrow divisions. |
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Lageniform
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Gourd-shaped. |
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Lamellate
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Made up of small, thin plates. |
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Lámina
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Porción generalmente expandida y aplanada de una hoja. |
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Lamina
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The expanded portion of a leaf or other structure such as a petal; when it is a leaf the narrowed part is the petiole and when it is a petal the narrowed part is the claw. Same as blade. |
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Laminar
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Expanded into a flattened or bladelike structure. |
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Laminar placentation
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A type of parietal placentation in which the ovules arise along the surface (rather than the margins) of the carpels. Compare with marginal placentation; see placentation. |
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Laminariform
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Bladelike. |
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Laminate (laminated)
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Arranged in layers, e.g., the outer bark of Lecythis pisonis.. |
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Lanate
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Woolly, usually referring to a type of pubescence. |
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Lanceoid
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Referring to a three-dimensional structure that is lance-shaped when viewed from the side (wider at the base than at the middle). |
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Lanceolada
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Se refiere a la forma de una lámina de una hoja u otra estructura similar, cuando es más ancha en la base, sus márgenes son convergentes y cuya relación longitud/ancho es 3:1 o mayor |
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Lanceolate
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Lanceolate refers to a leaf, sepal, petal, or other flat structure that is wider at the base than at the midpoint, tapers toward the apex, and has a length-to-width ratio of 3:1 or more. |
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Lanuginose
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Woolly or cottony, referring to a type of pubescence. |
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Large Trees Score
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0-10 scale of the % of mature trees at the site, and % of those alive |
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Lateral aril
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An aril that runs along the side of the seed such as in many, but not all, species of Eschweilera (Lecythidaceae). |
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Lateral bud
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A bud arising in the axil of a leaf. Same as axillary bud. |
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Lateral leaflet
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In a pinnately compound leaf, the leaflets at inserted along the rachis. Note that pinnately compound leaves with lateral leaflets can be either imparipinnate ( = odd pinnate) or paripinnate (= even pinnate) depending on if there is a terminal or there is not a terminal leaflet, respectively. |
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Lateral style
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Referring to a gynobasic style that arises from the base and side of the ovary. |
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