costa
Term Information
- Accession
- PO:0030072
- Aspect
- plant anatomy
- Synonyms
- related: non-vascular leaf midvein
- related: non-vascular leaflet midrib
- related: phyllid midvein
- exact: costa (Spanish)
- exact: costae
- exact: non-vascular leaf midrib
- exact: phyllid costa
- exact: phyllid midrib
- exact: 中肋 (Japanese)
- broad: mid rib
- broad: midrib
- Definition
- A portion of plant tissue (PO:0009007) that is a single or double strand in the center of a non-vascular leaf and has as part hydrome (PO:0030047) or leptome (PO:0030048). [source: ISBN:376821110]
- Comment
- Found in bryophytes. Often contains both hydrome and leptome. Functions in support and conduction in a phyllid. The term costa is sometimes used for the midrib of monocot leaves, but this ontology class should only be used for non-vascular leaves.
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