Flower Dissection

Also called

parts of a flower · whorls of a flower · calyx · corolla · androecium · gynoecium · stamen · carpel · pistil · placentation · hypogynous · perigynous · epigynous · floral formula · thalamus · पुष्प · पुंकेसर · बीजांडन्यास

Topics

• A flower has four whorls on the thalamus: calyx (sepals), corolla (petals), androecium (stamens), gynoecium (carpels).
• A stamen is a stalk, the filament, and a two-lobed anther; the anther splits to release pollen grains.
• A carpel has a stigma, a style and an ovary; ovules attach inside the ovary on a cushion, the placenta.
• Marginal placentation: ovules along one edge of a single carpel, as in the pea.
• Axile placentation: ovules on a central axis of a many-chambered ovary, as in China rose, tomato and lemon.
• Parietal placentation: ovules on the inner wall of a one-chambered ovary, as in mustard and Argemone.
• Hypogynous: superior ovary above the other parts; perigynous: parts on a cup rim; epigynous: inferior ovary.
• This flower’s formula is ⊕ ⚥ K5 C5 A5 G(3): regular, bisexual, five each of sepals, petals and stamens.
• G(3) with a line under it means three fused carpels in a superior ovary.

About this model

A GLB file of about 765 KB, shown in Lably's 3D viewer and, on a phone, placed in your room with AR. Credit: Model, science and animation: Lably (built procedurally with three.js; no downloaded meshes). | CC BY 4.0. Original geometry and animation made for Lably.

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