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In some taxa one or more stamens will initially form but will be nonfertile. Such a sterile stamen is termed a staminode or staminodium. Staminodes may resemble the fertile stamens and can only be identified by determining if viable pollen is released.
In botany, a staminode is an often rudimentary, sterile or abortive stamen, which means that it does not produce pollen. [ 1 ] [ page needed ] 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.
18 lut 2020 · Key Results. Our developmental study has revealed novel features of staminode development, most notably a physical interaction along the lateral margin of adjacent organs that appears to mediate their adhesion.
Staminodes are either whole organs (outer tiers or whorls, namely petals, intermediate tiers, or organs within a tier), or partial organs. This article aims to discuss the shortcomings of the past and current approach of staminodes and proposes definitions of staminode types for use as characters in phylogenetic analyses.
In this article we present a survey of the occurrence of staminodial structures and their functionality in the flower and give an overview of possible misinterpretations of staminodes and their relevance in morphological studies.
Stamens that have lost their primary function of pollen production, or staminodes, occur uncommonly within angiosperms, but frequently fulfill important secondary floral functions. The phylogenetic distribution of staminodes suggests that they typically arise during evolutionary reduction of the androecium.
1 paź 2000 · Staminodes sometimes provide rewards, secreting food bodies in the Degeneriaceae (Endress, 1984b), Calycanthaceae (Grant, 1950), and Eupomatiaceae (Endress, 1994). In laurid-type flowers, staminodes attract pollinators through the provision of nectar (Woodson and Schery, 1948; Endress, 1984b, 1986). Although these flowers are also protogynous ...
