Staminode

{{short description|Modified or abortive stamen in flowering plants}}

{{more citations needed|date=September 2024}}

In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen.Jackson, Benjamin, Daydon; A Glossary of Botanic Terms with their Derivation and Accent; Published by Gerald Duckworth & Co. London, 4th ed 1928{{page number needed|date=September 2024}} Staminodes are frequently inconspicuous and stamen-like, usually occurring at the inner whorl of the flower, but are also sometimes long enough to protrude from the corolla.{{citation needed|date=September 2024}}

Image:Staminode 1509.JPG) flower]]

Sometimes, the staminodes are modified to produce nectar, as in the witch-hazel (Hamamelis).jin lu mei shu. Hamamelis Linnaeus, Sp. Pl. 1: 124. 1753. Flora of China 9: 32. 2003

Staminodes can be a critical characteristic for differentiating between species, for instance in the orchid genus Paphiopedilum, and among the penstemons.

In the case of cannas, the petals are inconsequential and the staminodes are refined into eye-catching petal-like replacements.

A spectacular example of staminode is given by Couroupita guianensis, a tropical tree growing in South America also known as the cannonball tree.