Arum Family

Mostly perennial herbs or vines with rhizomes or tubers and watery or milky sap, occasionally aquatic, epiphytic or slightly woody, sometimes with a juvenile phase. Leaves alternate or basal, simple, lobed or compound, mostly stalked and broad. Scale leaves present at some stages. Leaf stalk usually with a sheath. Flowers mostly bisexual, regular, consisting of a spadix (sometimes smelly), a stem bearing the male, female and sterile flowers (sometimes with a sterile tip, the appendix), and a spathe, a kind of giant petal surrounding the spadix. Fertile florets bisexual or unisexual, if unisexual the females generally below the males on the spadix. Sterile florets sometimes present. Perianth segments 0, 4, 6 or more. Stamens 0, 1, 4, 6 or more, free or (in male florets) sometimes united. Female florets sometimes with sterile stamens. Ovary 1-4 - chambered containing 1-many ovules. Fruit a berry.

Grown for the unusual flowers and attractive foliage, often as indoor and patio pot plants.

Rarely cultivated plants include: Cyrtosperma chamissonis, Helicodiceros muscovorus, Homalomena wallisii, Pistia stratiotes, Rhaphidophora celatocaulis syn. Pothos celatocaulis N.E. Br.. Acorus, sometimes placed in Araceae, now has its own family Acoraceae.

About 2500 species in 104 genera, growing throughout the tropics and subtropics, generally in moist conditions.

Starch in corms is used as a food from Alocasia and Colocasia as Taro, and from Xanthosoma as Yautia.

Basal leaves with a sheathing stalk; presence of a spathe and spadix.

Brown (1988), Bogner & Nicolson (1991), Hay et al. (1995). The International Aroid Society ( produces the journal Aroideana.

Source: Spencer, R. (2005). Araceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.

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kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Lilianae
order      Alismatales
Higher taxa
Subordinate taxa
genus        Aglaonema Schott
genus        Alocasia Necker
genus        Amorphophallus Blume
genus        Anthurium Schott
genus        Arisaema Mart.
genus        Arisarum Mill.
genus        Arum L.
genus        Caladium Vent.
genus        Calla L.
genus        Colocasia Schott
genus        Dieffenbachia Schott
genus        Dracunculus Adans.
genus        Epipremnum Schott
genus        Lysichiton Schott
genus        Monstera Adans.
genus        Orontium L.
genus        Peltandra Raf.
genus        Philodendron Schott
genus        Scindapsus Schott
genus        Spathiphyllum Schott
genus        Spirodela L.
genus        Syngonium Schott
genus        Xanthosoma Schott
genus        Zantedeschia Spreng.