pulvinus
Term Information
- Accession
- PO:0009000
- Aspect
- plant anatomy
- Synonyms
- exact: 葉枕 (Japanese)
- exact: pulvínulo (Spanish)
- exact: pulvini
- Definition
- A cardinal organ part (PO:0025001) at the apex or base of a petiole, petiolule, leaf sheath, or branch that is differentiated from the remaining organ parts by its enlarged cross section. [source: POC:curators]
- Comment
- Often glandular. Often involved in movement of a plant structure in response to touch, gravity or light. In panicoid grasses a swollen region in the stem above the intercalary meristem. Such a definition would also include stems of Chloranthaceae, Acanthaceae, Carpels, Amaranthaceae, etc. [source: APweb:Glossary].
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