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Term	Definition
Imbricate	Referring to a type of aestivation in which the sepals or petals overlap at the adjacent edges or to the overlapping leaf bases as found in some species of Bromeliaceae.
Imbricate-contorted aestivation	A type of aestivation in which one edge of the structure (e.g., a petal) is above and the other below the structure on each side of it.
Immersed	Embedded in the substance of a structure. Compare with impressed.
Imparipinnada	Se refiere a una hoja compuesta que posee un foliolo impar en la porción distal. Comparar con paripinnada
Imparipinnate leaf	Pinnate with an uneven number of leaflets, i.e., with a terminal leaflet. Same as odd pinnate.
Imperfect flower	Referring to a flower that possesses only male (= staminate flower) or female (= pistillate flower) flowers .
Impressed	Sunk below the surface as if pressed in; e.g., some leaf veins in relation to the rest of the leaf surface. Compare with immersed.
Impressed	Sunken below the surface as if pressed in; e.g., some leaf or seed veins in relation to the rest of the leaf or seed surfaces.
in Author	The publication of a name by one author(s) in a larger work published by another or other author(s).
Inaperturate	Without openings, often used to refer to pollen grains without pores.
Incerta sedis	Referring to a taxon whose relationships are not known with certainty.
Included	Not protruding from a structure, such as the stamens from the corolla. Opposite of exserted.
Incomplete flower	A flower with at least one of the whorls of floral parts missing; i.e., calyx, corolla, stamen(s), or gynoecium. Compare with complete flower.
Incross	In flowering plants, the production of viable seed by the movement of pollen from one flower to another flower of the same plant..
Indehiscent	Not opening; usually applied to fruits that remain closed at maturity. Opposite of dehiscent.
Indehiscent fruit	Referring to a fruit that does not open via an operculum.
Indeterminada	Se refiere a las inflorescencias cuyos ejes principales poseen un crecimiento continuo, es decir, no terminan en una flor; por ejemplo, un racimo, una espiga. Este término también se aplica a las hojas compuestas de Guarea Meliaceae, en las que el ápice del raquis puede seguir creciendo
Indeterminate	Referring to an inflorescences whose main axis continues to grow; i.e., is not terminated by a flower (e.g., a raceme); referring to the compound leaf of Guarea (Meliaceae) in which the tip of the rachis has the potential to continue growing.
Indeterminate inflorescence	Referring to an inflorescences whose main axis continues to grow; i.e., is not terminated by a flower (e.g., a raceme or spike); also referring to the compound leaf of Guarea (Meliaceae) in which the tip of the rachis has the potential to continue growing
Index Herbariorum	a href="https://sweetgum.nybg.org/science/ih/"Index Herbariorum/a (the abbreviation is IH) provides codes (called acronyms) for the herbaria of the world with more than 5,000 specimens. In addition, it gives the essential information about the number of specimens, important collections, a list of staff, and a summary of the specialties of the herbaria and their staff. The IH is published electronically which enables updating the information periodically and allows for the data to be retrieved through searches. For example, assume that a user wanted to find out if there were specialists in Sapotaceae, he or she could type the family name into the specialty box and Sapotaceae specialists in all registered herbaria will be listed. The current manager of IH is Dr. Barbara Thiers, the Director Emerita of the Herbarium of The New York Botanical Garden. Please contact bthiers@nybg.org for all IH inquiries.
Indument	A covering of trichomes.
Indumento	Una cubierta de tricomas
Induplicate	In Arecaceae, referring to leaflets that are V-or trough-shaped in transverse section with the apex of the V pointing downward, e.g., in the leaflets of date palms (Phoenix dactylifera). Opposite of reduplicate.
Indurate	Hard.
Indusium (plural = indusia)	Usually referring to the protective covering of the sporangia of some ferns, but sometimes used to refer to other structures; e.g., the stylar outgrowth of species of Goodeniaceae.
Indusium false (plural = indusia false)	Referring to an indusium formed by the enrolled leaf margins of a fern.
Inferior ovary	An ovary in which the floral parts (calyx, corolla, and stamens) arise from the summit; e.g., in Rubiaceae and Asteraceae.
Inflexed	Bent inward.
Inflorescence	The structure in which the flower or flowers are displayed on a plant.
Inflorescence	The structure in which the flower or flowers are displayed on a plant.
Inflorescencia	Estructura formada por un conjunto de flores en una planta. La flor es solitaria también es considerada un tipo de inflorescencia.
Inflorescencia axilar	Se refiere a la inflorescencia que nace de la axila entre la hoja y la rama.
Inflorescencia cauliflora	Equivalente a inflorescencia caulinar.
Inflorescencia caulina, caulinar	Se refiere a flores o frutos que nacen del tallo principal o tronco de un árbol, debajo del nivel de las hojas. Equivalente a inflorescencia cauliflora.
Inflorescencia determinada	Un tipo de inflorescencia en la que la flor terminal o central abre primero; por ejemplo, en las cimas.
Inflorescencia ramiflora	Se refiere a la inflorescencia que nace de las ramas. La inflorescencia que nace de un tronco es cauliflora.
Inflorescencia suprafoliar	Se refiere a la disposición de una inflorescencia terminal cuando emerge sobre el nivel de las hojas.
Infra adjacent secondary vein	Referring to the relationship of two secondary veins, in this case referring to a secondary vein that is below another (i.e., in a basal or proximal position in relationship to the other).
Infra-	A prefix meaning “beneath” or “below” or “not quite reaching”; e.g., “infraterminal” means below the apex, an inframarginal vein is one that does not quite reach the margin, and an infrageneric classification is one in which the species of a genus are placed in groups of lesser rank.
Infracalycine zone	The area between the calycine ring and the pedicel scar in a fruit of Lecythidaceae.
Infracalycine zone rounded	The infracalycine zone is rounded from the calycine ring to the pedicel scar thereby giving the fruit a cup-like shape.
Infracalycine zone tapered	The infracalycine zone tapers from the calycine ring to the hypanthium/pedicel
Infracalycine zone truncate	An ovary or a fruit which abruptly turns inward from the calycine rim to the pedicel/hypanthium. Same as truncate fruit.
Infrafoliar	Borne below the leaves; e.g., the position of the inflorescence of certain Arecaceae such as, Euterpe spp. and Oenocarpus bacaba.
Infrafoliar	Refers to a structure that arises from the branches or trunks below the leaves.
Infrafoliar inflorescence	An inflorescence that arises from the branches (ramiflorous) or trunk (cauline) below the leaves.
Infraspecific variation	Morphological and anatomical variation with a species.
Infructescence	The structure in which fruits are displayed on a plant.
Infundibular	Usually referring to a corolla in the shape of a funnel but can also be applied to other structures with a similar shape.See funnelform.
Inner bark	The functional phloem that occupies the region between the most recent periderm and the vascular cambium.

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