Merosity
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Merosity refers to the number of component parts in a distinct whorl of a plant structure. The term is most commonly used in the context of a flower where it refers to the number of sepals in a whorl
Trimerous flower of Tulipa clusiana (the three sepals resemble petals)
Tetramerous flower of Correa alba
Pentamerous flower of Crassula ovata
Whorl (botany)
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In botany, a whorl or verticil is a whorled arrangement of leaves, sepals, petals, stamens, or carpels that radiate from a single point and surround or wrap around the stem or stalk. A leaf whorl cons
Merosity
…Merosity (from the greek "méros," which means "having parts") refers to the number of component parts in a distinct whorl of a plant structure. The term is most commonly used in the context of a flower where it refers to the number of sepals in a whorl of the calyx, the…
Photograph and axial plane floral diagram of Friesodielsia desmoides, showing the whorled pattern of multiple concentric objects.
Leaf whorls on a herbaceous Lilium michiganense
Leaf whorls on a woody tree, Brabejum stellatifolium