unifoliolate
uni.fo.li.o.late \-'fo--le--*-.la-t\ aj of a leaf : compound but having only a single leaflet and distinguishable from a si mple leaf by the basal joint
Webster's English Dictionaryuni.fo.li.o.late \-'fo--le--*-.la-t\ aj of a leaf : compound but having only a single leaflet and distinguishable from a si mple leaf by the basal joint