Aroids

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About Aroids

The arums comprise the Family Araceae (including the numerous aroids subfamily): monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe or leaf-like hood. This family of 107 genera and over 3700 species is most diverse in the New World tropics, although also distributed in the Old World tropics and north temperate regions. Recent genetic research by the Angiosperm Phylogeny Group has shown that the duckweeds, previously treated in a separate family Lemnaceae, also belong in the Araceae.

In monoecious aroids (possessing separate male and female flowers, but with both flowers present on one plant), the spadix is usually organized with female flowers towards the bottom and male flowers towards the top. In aroids with perfect flowers the stigma is no longer receptive when the pollen is released, thus preventing self-fertilization. There are also some dioecious species. cont. @ en.wikipedia.org/wiki/Araceae

Amorphophallus titanum

by Chlorophil7 www.flickr.com/photos/21272638@N06/

Spadix Detail #1

by J.G. in S.F www.flickr.com/photos/jim-sf/

Arisaema griffithii var. pradhanii

by chestykoff www.flickr.com/photos/21375794@N08/

Infrared photo of Amorphophallus titanum (Corpse Flower, Titan Arum) and me

by aeranthes www.flickr.com/photos/aeranthes/

Arisaema species

by Eric in SF www.flickr.com/photos/ericinsf/

Ambrosinia bassii

by Mat.Tauriello www.flickr.com/photos/taurielloanimaliorchidee

Anthuriums thick spadex

by redyoyo64 www.flickr.com/photos/30829586@N07/

Pistia stratiotes

by turdusprosopis www.flickr.com/photos/23630893@N08/

Philodendron meliononi

by Andre Benedito www.flickr.com/photos/andrebenedito/