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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. Staminodial structures should be classified according to their position and function in the flower.
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.
staminode. plant anatomy. Learn about this topic in these articles: flower structure. In angiosperm: The androecium. …a petal-like blade called a staminode (in the same manner that a sepal forms a petal-like blade in some flowers without true petals).
Therefore, we propose to characterize staminodes in two ways: a functional definition, with a major distinction between vestigial staminodes and functional staminodes (Fig. 52); and a topological definition, in which staminodes are approached on the basis of their relationship with the other organs in the flower (Fig. 53).
8 lut 2022 · Staminodes are floral structures occurring in approximately one-third of the angiosperms. These organs often go unnoticed in nature because they may mimic other floral parts. Consequently, their macro- and micromorphological portrayal in the literature is limited.
1 paź 2000 · With the loss of their defining function as producers of viable male gametophytes, stamens become staminodes. Staminodes are relatively uncommon, but widely distributed taxonomically, occurring in at least one species in 32.5% of angiosperm families and 54.4% of angiosperm genera.
