A thickened region at the node of a grass stem, often containing an intercalary meristem , which can raise the culm after lodging. Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.
February 26, 2019. Retrieved February 26, 2019 from Encyclopedia.
General pulvinus. A swelling at the base of a petiole or pinna , made up of cells that are capable of moving water in and out of their vacuoles quickly, resulting in movement of the petiole or pinna.
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Learn more about citation styles Citation styles Encyclopedia. Print this article Print all entries for this topic Cite this article. In the sensitive plant Mimosa pudica , the pulvinus is responsible for the folding of the leaves that occurs at nightfall or when the plant is touched or injured.
Modern Language Association http: See motor cell.