Peltandra, the arrow arums, is a genus of plants in the family Araceae. It is native to the eastern United States, eastern Canada, and Cuba.
- Peltandra sagittifolia - (Michx.) Morong - Spoon flower or the white arrow arum - southeastern US from eastern Louisiana to Virginia
- Peltandra virginica(L.) Schott - Arum arrow - Cuba, Quebec, Ontario, Oregon, California, Washington; eastern US from Maine to Florida, west to Texas, Kansas, and Minnesota
- †Peltandra primaeva – Eocene, Golden Valley Formation, North Dakota, USA
Calla is a genus of flowering plant in the family Araceae, containing the single species Calla palustris.
Arisarum is a genus of flowering plants in the family Araceae. It is native to the Mediterranean region, east to the Caucasus and west to Macaronesia.
Pothoidium is a monotypic genus of flowering plants in the family Araceae. The single species that comprises the genus is Pothoidium lobbianum. This species is native to Maluku, Sulawesi, the Philippines, and to Lan Yü Island of Taiwan.
Pedicellarum is a monotypic genus of flowering plants in the family Araceae. The single species that comprises the genus is Pedicellarum paiei. This species is endemic to the Island of Borneo.
Holochlamys is a monotypic genus of flowering plants in the family Araceae. Holochlamys beccarii is the only species in the genus Holochlamys. It is native to New Guinea and the Bismarck Archipelago and is found growing in mud near lowland streams or rocky streambeds at high elevations.
Alloschemone is a genus of evergreen root climbing plants in the family Araceae that is native to the Amazon region of Bolivia and Brazil. There are only two species in the genus and both are extremely rare. These two species are Alloschemone occidentalis and Alloschemone inopinata. At one point in history, the genus Alloschemone was dissolved and added to Scindapsus, but it has since been reinstated after further observations of the plants.
Urospatha is a genus of flowering plants in the family Araceae that consists of approximately 10 known species. They are found growing in South America and Central America in swamps, wet savannahs, and brackish water. The leaves of the species in this genus are upward pointing and sagittate (arrow-shaped). The inflorescences are quite unique; the spathe is mottled and elongated with a spiral twist at the end. The seeds are distributed by water and have a texture similar to cork that allows them to float. They also quickly germinate in water.
Anaphyllum is a genus of flowering plants in the family Araceae. It consists of two species. They are found in marshes, have leaves with some pinnation, and have a twisted spathe. The two species in this genus are similar in appearance to those in the genus Anaphyllopsis.
- Anaphyllum beddomeiEngl. - Tamil Nadu, Lakshadweep
- Anaphyllum wightiiSchott. - Kerala, Lakshadweep
Podolasia is a monotypic genus of flowering plants in the family Araceae. The single known species in the genus is Podolasia stipitata. It is native to Borneo, Sumatra, and Peninsular Malaysia.
Pycnospatha is a genus of flowering plants in the family Araceae. It contains only two species both of which are tuberous and endemic to Indochina.
- Pycnospatha arietinaGagnep. - Thailand, Cambodia, Quan Phu Quoc Island of Vietnam
- Pycnospatha palmataGagnep. - Laos, Thailand
Zomicarpella is a genus of flowering plants in the family Araceae. It is native to Colombia, Peru and Brazil. The leaves are hastate or sagittate. The chromosome number for Zomicarpella species is 2n=26. Additionally, the seeds have an endosperm.
- Zomicarpella amazonicaBogner - Amazonas State of northwestern Brazil
- Zomicarpella maculataN.E.Br. - Colombia, Peru
Mangonia is a genus of flowering plants in the family Araceae. The genus contains only two known species native to southern Brazil and Uruguay.
- Mangonia tweedieanaSchott. - Rio Grande do Sul, Uruguay
- Mangonia uruguaya(Hicken) Bogner - Cerro Largo in Uruguay
Phymatarum is a genus of flowering plants in the family Araceae. It contains only one known species, Phymatarum borneense, native to Brunei and Sarawak on the Island of Borneo.
Filarum is a monotypic genus of flowering plants in the family Araceae. The single species making up the genus is Filarum manserichense. It is found growing in the amazonian region of northeastern Peru. Govaerts, R. & Frodin, D.G. (2002). World Checklist and Bibliography of Araceae : 1–560. The Board of Trustees of the Royal Botanic Gardens, Kew. The fertile male flowers of Filarum are unique in that they have hairlike attachment to them.
Gorgonidium is a genus of flowering plants in the family Araceae. It is native to South America. The spathes tend to be purple and the fruits are black.
- Gorgonidium beckianumBogner - Bolivia
- Gorgonidium bulbostylumBogner & E.G.Gonç - Bolivia
- Gorgonidium cardenasianum(Bogner) E.G.Gonç - Bolivia
- Gorgonidium intermedium(Bogner) E.G.Gonç - Peru
- Gorgonidium mirabileSchott - Bolivia
- Gorgonidium striatumHett., Ibisch & E.G.Gonç
- Gorgonidium vargasiiBogner & Nicolson - Peru
- Gorgonidium vermicidum(Speg.) Bogner & Nicolson - Bolivia, northern Argentina
Pseudohydrosme is a genus of flowering plants in the family Araceae. It contains only two species, Pseudohydrosme buettneri and Pseudohydrosme gabunensis, both endemic to tropical rain forests in Gabon. The genus is believed to be closely related to Anchomanes and is likely to be sunk into Anchomanes due to molecular evidence.
Spathantheum is a genus of flowering plants in the family Araceae. The genus contains two species, Spathantheum fallax and Spathantheum orbignyanum. Spathantheum is believed to be closely related to Spathicarpa. The genus is endemic to the Andes of Peru, Bolivia, and northern Argentina and is found growing in grasslands in rocky soil.
- Spathantheum fallax Hett., Ibisch & E.G.Gonç. - Bolivia
- Spathantheum orbignyanumSchott - Peru, northwestern Argentina, Bolivia
Spathicarpa is a genus of flowering plants in the family Araceae, all of which are endemic to South America. Spathicarpa species are notable for the fact that the entirety of their spadix is fused to the spathe. The genus is believed to be closely related to Spathantheum. The tribe Spathicarpeae is named after the genus Spathicarpa.
Zantedeschia albomaculata is a species of flowering plant in the family Araceae. It is commonly known as the spotted calla lily or white spotted arum.
