- the principal axis of an inflorescence above the peduncle;
- the axis on which the leaflets of a compound leaf are inserted.
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: rhachis .
http://www.zambiaflora.com/speciesdata/glossary-display.php?glossary_id=616, retrieved 23 March 2017