unifoliate
/ʌnɪˈfoʊlieɪt/Definitions
1. adjective
Having or consisting of a single leaf, especially a compound leaf with a single leaflet.
“The unifoliate plant in the garden was a rare species.”
2. noun
A plant with unifoliate leaves, especially one in which the leaflets are united.
“The botanist studied the unifoliate plant in the greenhouse.”