Spadix

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1. Leaves and Inflorescence of the Arum maculatum, 2. Underground root-stock, 3. Lower part of spathe cut open, 4. Spike of fruits- showing in succession (from below) female flowers, male flowers, and sterile flowers forming a ring of hairs borne on the spadix.

In botany, a spadix[1] is a type of spike inflorescence having small flowers borne on a fleshy stem. Spadix are typical of the family Araceae, the arums or aroids. The spadix is typically surrounded by a leaf-like curved bract known as a spathe. For example, the "flower" of the well known Anthurium spp. is a typical spadix with a large colorful spathe.

Monoecious aroids have unisexual male and female flowers on the same individual and the spadix is usually organized with female flowers towards the bottom and male flowers towards the top. Typically, the stigma is no longer receptive when pollen is released which prevents self-fertilization.

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References[edit]

  1. ^ spadix. CollinsDictionary.com. Collins English Dictionary - Complete & Unabridged 11th Edition. Retrieved October 18, 2012.