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Diagram of spadix. In botany, a spadix (/ ˈ s p eɪ d ɪ k s / SPAY-diks; pl.: spadices / ˈ s p eɪ d ɪ s iː z / SPAY-dih-seez, / s p eɪ ˈ d aɪ s iː z / spay-DY-seez) is a type of inflorescence having small flowers borne on a fleshy stem. Spadices are typical of the family Araceae, the arums or aroids.
In the genus Nautilus, the spadix is a composite erectile organ in the male located in the oral region which is composed of four highly modified tentacles and which is paired with a somewhat smaller antispadix that is also composed of four tentacles. The spadix is normally a concealed organ but quickly becomes distended upon the animal's death.
A spadix is a spike of flowers densely arranged around it, enclosed or accompanied by a highly specialised bract called a spathe. It is characteristic of the family Araceae . A flower head or capitulum is a very contracted raceme in which the single sessile flowers share are borne on an enlarged stem.
The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). Also known as the arum family , members are often colloquially known as aroids . This family of 114 genera and about 3,750 known species [ 3 ] is most diverse in the New World tropics, although also distributed in the Old World tropics and ...
The flowers are inconspicuously crowded on the spadix. The spathes act as the conspicuous portion of the plant. The inflorescence differs in size and the amount of flowers it contains. [7] Due mostly to the crowding effect, the flowers do not show three (or its multiple) floral parts, as should be expected for monocots, but four perianth parts.
Spadix may refer to: Spadix (botany), a reproductive organ of some genera of plants; Spadix (zoology), a similarly shaped secondary sexual organ of some genera of ...
The inflorescence's deep red color and texture contribute to the illusion that the spathe is a piece of meat. During bloom, the tip of the spadix is roughly human body temperature, which helps the perfume volatilize. The heated spadix creates a micro-convection in the cool ambient air, enhancing the transport of the scent.
The spadix is often elongated into a spike shape, but it can be globe-shaped or club-shaped. Beneath the spadix is the spathe, a type of bract. This is variable in shape, as well, but it is lance-shaped in many species. It may extend out flat or in a curve. Sometimes it covers the spadix like a hood. The fruits develop from the flowers on the ...