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In plants, a rachis is the main axis of a compound structure. It can be the main stem of a compound leaf, such as in Acacia or ferns, or the main, flower-bearing portion of an inflorescence above a supporting peduncle. Where it subdivides into further branches, these are known as rachillae (singular rachilla).
Rachis Carrillo, creador de contenido viene con su nuevo podcast. ...
Del lat. cient. rachis, y este del gr. ῥάχις ráchis. 1. m. Anat. columna vertebral (‖ eje del neuroesqueleto de los vertebrados).
Rachis (plural rachises): In species with compound-pinnate leaves (such as most Fraxinus species), the “stalk” of the leaf is divided into the petiole and the rachis. While the petiole extends from the leaf node to the first leaflet pair, the part of the “stalk” beyond (distal to) the first leaflet pair is called rachis.
Rachis o Raqui (también escrito Ratchis, Raditschs, Radics, Radiks; m. después de 757) fue duque de Friuli (739-744) y rey de los lombardos (744-749).
The internal structure of the leaf is protected by the leaf epidermis, which is continuous with the stem epidermis. The central leaf, or mesophyll, consists of soft-walled, unspecialized cells of the type known as parenchyma.
The meaning of RACHIS is an axial structure. an axial structure: such as; the elongated axis of an inflorescence; an extension of the petiole of a compound leaf that bears the leaflets… See the full definition
