Female inflorescence consisting of a thickened rachis (cob) round which spikelets are inserted *Z. mays
Female inflorescence with spikelets arranged in a single row along the rachis which soon fragments *Z. mexicana (QLD)

Euchlaena mexicana
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith