equitant
/ˈɛkwɪt(ə)nt
/adjective Botany
(Of a leaf) having its base folded and partly enclosing the leaf next above it, as in an iris.The leaves in the genus Iris are equitant that is they are 2-ranked and folded in half lengthwise....
- Most Nartheciaceae can be recognised by their isobifacial, equitant leaves.
Origin
Late 18th century: from Latin equitant- 'riding on horseback', from the verb equitare.