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The three lower petals curve back slightly and are on average 17 mm (0.65 in) long and 6 mm (0.25 in) wide (full range 13½–21 mm × 3½–7½ mm). The ten filaments are merged into a tube of about 2 mm (0.08 in) long, the free parts of the filaments varying in length within the same flower, between 2 and 11 mm (0.08–0.45 in) long.
A corolla of separate petals, without fusion of individual segments, is apopetalous. If the petals are free from one another in the corolla, the plant is polypetalous or choripetalous; while if the petals are at least partially fused, it is gamopetalous or sympetalous. In the case of fused tepals, the term is syntepalous. The corolla in some ...
Among the distinguishing characters of the genus are two series of stamens totaling twice the number of petals; free or nearly free petals (not joined in a tube); a stout rhizome from whose axils the flowering stems rise; and a basal rosette of leaves. This genus contains the only species of Crassulaceae that have unisexual flowers. [4] [7]
K 3+3 – a calyx with six free sepals, arranged as two separate whorls; A∞ – many stamens; P3–12 – perianth from three to twelve petals; Groups of organs can be described by writing the number of instances in the group as superscript. A5² – 5 groups of 2 stamens. The formula can also express organ fusion.
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Aquilegia (common names: granny's bonnet, [2] columbine) is a genus of about 130 species [1] of perennial plants that are found in meadows, woodlands, and at higher elevations throughout the Northern Hemisphere, known for the spurred petals [3] of their flowers.
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The corolla is gametopetalous, the five petals may be joined forming a tube with 4 or 5 lobes (in the flower called tubulose flower or floret, or two groups of petals joined (in the case of bilabiated flowers, with an upper lip formed by 2 petals and a lower lip formed by 3 petals), or they can present a short tube and the limb prolonged ...