Touchardia is a genus of flowering plants in the nettle family, Urticaceae. It is monotypic containing a single species, Touchardia latifolia, commonly known as olonā in Hawaiian. It is endemic to the Hawaiian Islands.
Swinglea is a monotypic genus of flowering plants belonging to the family Rutaceae. It only contains a single species, Swinglea glutinosa.
Polyclita is a monotypic genus of flowering plants belonging to the family Ericaceae. It only contains one known species, Polyclita turbinata(Kuntze) A.C.Sm.
Periclesia is a monotypic genus of flowering plants belonging to the family Ericaceae. It only contains one known species, Periclesia flexuosaA.C.Sm. It is also with the Vaccinioideae subfamily and the Vaccinieae tribe.
Reissekia is a monotypic genus of flowering plants belonging to the family Rhamnaceae. It only contains one known species, Reissekia smilacina(Sm.) Steud.
Themistoclesia is a genus of flowering plants belonging to the family Ericaceae.
Naudinia is a monotypic genus of flowering plants belonging to the family Rutaceae. It only contains one known species, Naudinia amabilis Planch. & Linden
Demosthenesia is a genus of flowering plants belonging to the family Ericaceae.
Koordersiodendron is a monotypic genus of flowering plants belonging to the family Anacardiaceae. It only contains one known species, Koordersiodendron pinnatum(Blanco) Merr.
Lichtensteinia is a genus of flowering plants belonging to the family Apiaceae. It is also the only genus in the tribe Lichtensteinieae, subfamily Apioideae.
Lipskya is a monotypic genus of flowering plants belonging to the family Apiaceae. It only contains one known species, Lipskya insignis. It is also in tribe Pyramidoptereae.
Lundinia is a genus of flowering plants belonging to the family Asteraceae. It only contains one known species, Lundinia plumbea.
Plutarchia is a genus of flowering plants belonging to the family Ericaceae.
Guiraoa is a monotypic genus of flowering plants belonging to the family Brassicaceae. It only contains one species, Guiraoa arvensisCoss.
Pennellianthus is a monotypic genus of flowering plants belonging to the family Plantaginaceae. It only contains one known species, Pennellianthus frutescens(Lamb.) Crosswh. The genus is within the Tribe Cheloneae along with Penstemon, from which Pennellianthus was separated from.
Moriera is a monotypic genus of flowering plants belonging to the family Brassicaceae. It only contains one known species, Moriera spinosaBoiss.
Krukoviella is a monotypic genus of flowering plants belonging to the family Ochnaceae. It has one synonym PlanchonellaTiegh. The only species is Krukoviella disticha(Tiegh.) Dwyer
Linnaeosicyos is a monotypic genus of flowering plants belonging to the family Cucurbitaceae. The only species is Linnaeosicyos amara(L.) H.Schaef. & Kocyan.
Morsacanthus is a monotypic genus of flowering plants belonging to the family Acanthaceae. The only species is Morsacanthus nemoralisRizzini.
Nepsera is a monotypic genus of flowering plants belonging to the family Melastomataceae. The only species is Nepsera aquatica.
