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).
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.
Link
to all direct and indirect annotations
to costa.
Link
to all direct and indirect annotations download (limited to first 10,000)
for costa.
Feedback
Contact the
Planteome feedback
if you find mistakes or have concerns
about the data you find here.
Comments, changes to terms, or requests for new ontology terms can be made at PO issue tracker on GitHub.