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.

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.

PO_GIT:352

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).

PO:0030072

phyllid midrib (exact)

non-vascular leaf midrib (exact)

costa (Spanish, exact)

中肋 (Japanese, exact)

costae (exact, plural)

phyllid costa (exact)

2011-04-29T02:30:17Z

midrib (broad)

mid rib (broad)

rwalls

plant_anatomy

non-vascular leaf midvein (related)

non-vascular leaflet midrib (related)

phyllid midvein (related)

PO:0030072

costa