leaf gap

leaf gap
A gap or break in the central cylinder of vascular tissue within a plants stem, caused by the extension of the tissue as a leaf trace.
See Also: leaf trace

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  • leaf gap — noun : a gap that surrounds a leaf trace …   Useful english dictionary

  • leaf trace — noun An extension of vascular tissue from a plants stem into a nearby leaf, resulting in a leaf gap in the plants stele. See Also: leaf gap …   Wiktionary

  • foliar gap — noun : leaf gap …   Useful english dictionary

  • Spark gap — A spark gap consists of an arrangement of two conducting electrodes separated by a gap usually filled with a gas such as air. When a suitable voltage is supplied, a spark forms, ionizing the gas and drastically reducing its electrical resistance …   Wikipedia

  • Foliar gap — Foliar Fo li*ar, a. (Bot.) Consisting of, or pertaining to, leaves; as, foliar appendages. [1913 Webster] {Foliar gap} (Bot.), an opening in the fibrovascular system of a stem at the point of origin of a leaf. {Foliar trace} (Bot.), a particular… …   The Collaborative International Dictionary of English

  • leafgap — leaf gap n. A break in the vascular tissue of a stem above the point of attachment of a leaf trace. * * * …   Universalium

  • Evolutionary history of plants — Plants have evolved through increasing levels of complexity, from the earliest algal mats, through bryophytes, lycopods, ferns and gymnosperms to the complex angiosperms of today. While the simple plants continue to thrive, especially in the… …   Wikipedia

  • lower vascular plant — ▪ biology Introduction formerly  pteridophyte,  also called  vascular cryptogam,         any of the spore bearing vascular plants, including the ferns, club mosses, spike mosses, quillworts, horsetails, and whisk ferns. Once considered of the… …   Universalium

  • Microphyll — This article is about leaf vasculature and evolution. For other uses, see Microphyll (disambiguation). Megaphyll leaves display a complex network of veins. The terminology of fossil plants is in places a little confusing. In the discipline s 200+ …   Wikipedia

  • Plant stem — Stem showing internode and nodes plus leaf petioles A stem is one of two main structural axes of a vascular plant. The stem is normally divided into nodes and internodes, the nodes hold buds which grow into one or more leaves, inflorescence… …   Wikipedia

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