L. jacottetii differs from other species of the section Krebsia in the pubescent (not totally glabrous) keel petals, the broadly oblanceolate to obovate leaflets and the strongly caducous stipules. It is similar to L. galpinii but differs from this species also in the erect and robust habit, the much larger leaves and flowers and the longer calyx lobes.
Similar to L. galpinii but can be distinguished by erect, more robust habit, larger leaves and flowers and longer calyx lobes. Stipules paired. Petals: keel hairy towards apex. Flowering time Feb., Mar.