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Beginners' botany. Botany. THE FLOWER —ITS PARTS AND FORMS 135 flowering dogwood: here the real flowers are several, small and greenish, forming a small cluster in the center. Essential Organs. —
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Brassinosteroid signals cooperate with katanin‐mediated microtubule severing to control stamen filament elongation | The EMBO Journal
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Elements of plant biology. Plant physiology. 34^ THE FLOWER Each stamen has a stalk, the filament, and bears (usually two) pairs of microsporangia, which are known as pollen sacs, together forming
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