Plant Trait Ontology (TO)
OWL
Last submission date May 21, 2025
ID http://purl.obolibrary.org/obo/PO_0030072
http://purl.obolibrary.org/obo/PO_0030072
https://agroportal.lirmm.fr/ontologies/TO/PO_0030072
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Preferred name

costa

Synonyms
costa (Spanish, exact) costae (exact, plural) non-vascular leaf midrib (exact) phyllid costa (exact) phyllid midrib (exact) 中肋 (Japanese, exact) mid rib (broad) midrib (broad) non-vascular leaf midvein (related) non-vascular leaflet midrib (related) phyllid midvein (related)
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Definitions
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. A portion of plant tissue (PO:0009007) that is a single or double strand in the center of a non-vascular leaf (PO:0025075) and has as part hydrome (PO:0030047) or leptome (PO:0030048).
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