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A cyclic flower is a flower type formed out of a series of whorls; [1] sets of identical organs attached around the axis at the same point. Most flowers consist of a single whorl of sepals termed a calyx; a single whorl of petals termed a corolla; one or more whorls of stamens (together termed the androecium); and a single whorl of carpels termed the gynoecium.
Leaf whorls occur in some trees such as Brabejum stellatifolium and other species in the family Proteaceae (e.g., in the genus Banksia). In plants such as these, crowded internodes within the leaf whorls alternate with long internodes between the whorls. The morphology of most flowers (called cyclic flowers) is based on four types of whorls:
No plant family has such a diverse range of flowers. Flowers are highly specialized in relation to their pollinators . Flowers are hermaphrodite (rarely unisexual), generally zygomorphic (bilaterally symmetrical), usually resupinates (i.e., the floral parts rotate 180° during development), often conspicuous and epigynous (i.e., the perianth ...
The Polemoniaceae (Jacob's-ladder or phlox family) are a family of flowering plants consisting of about 27 genera [2] with 270–400 species of annuals and perennials native to the Northern Hemisphere and South America, with the center of diversity in western North America.
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The plants are most often hermaphrodite but sometimes polygamomonoecious. The fruit can be a berry , drupe , capsule or samaras . The obvious feature that distinguishes Oleaceae and its sister family, Carlemanniaceae , from all others, is the fact that while the flowers are actinomorphic, the number of stamens is reduced to two.
The Salicaceae are the willow family of flowering plants. The traditional family (Salicaceae sensu stricto ) included the willows, poplars. Genetic studies summarized by the Angiosperm Phylogeny Group (APG) have greatly expanded the circumscription of the family to contain 56 genera and about 1220 species, including the tropical ...
This article lists the living orders of the Viridiplantae, based primarily on the work of Ruggiero et al. 2015. [1] Living order of Lycophytes and ferns are taken from Christenhusz et al. 2011b [2] and Pteridophyte Phylogeny Group. [3]