the part of the stalk of the ovule (funicle) that is united or coherent to the outer wall of the ovule and forms a ridge on the surface of the seeds.
Copyright: Mike Bingham, Annette Willemen, Bart Wursten, Petra Ballings and Mark Hyde, 2011-17
Bingham, M.G., Willemen, A., Wursten, B.T., Ballings, P. and Hyde, M.A.
. Flora of Zambia: Glossary details: raphe.
http://www.zambiaflora.com/speciesdata/glossary-display.php?glossary_id=600, retrieved 29 March 2017