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Close-up of a Schlumbergera flower, showing part of the gynoecium (specifically the stigma and part of the style) and the stamens that surround it. Plant reproductive morphology is the study of the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction.
In the majority of species, individual flowers have both carpels and stamens. These flowers are described by botanists as being perfect, bisexual, or hermaphrodite. In some species of plants, the flowers are imperfect or unisexual: having only either male (stamen) or female (carpel) parts.
The flowers are either imperfect [Note 2] or perfect, with the 6 tepals monomorphic and shaped lanceolate. The male flowers are pale yellow, smaller than the female ones, and have an occasionally have an aborted ovary. The female flowers are initially pale yellow but become red to rose, and always have aborted stamens. The perfect flowers are ...
The disk florets are in the center of the bloom head, and the ray florets are on the perimeter. The ray florets are considered imperfect flowers, as they only possess the female reproductive organs, while the disk florets are considered perfect flowers, as they possess both male and female reproductive organs. Display in Pakistan
Floral sexuality is related to the presence or absence of the reproductive whorls: androecium and gynoecium. Flowers that have both whorls (i.e., will produce both male and female gametes) are said to be perfect, bisexual, monoclinous or, more frequently, hermaphrodites, as is the case with potato flowers (Solanum tuberosum, Solanaceae
The flowering takes about 45 to 70 days. The small greenish flowers are usually bisexual ("perfect"). [13] The latter trait is most likely an effect of a long cultivation, the newer (mostly American) varieties have imperfect flowers with varying intersex degrees. [14] Self-pollination is typical. [15]
Parietaria debilis, commonly known as pellitory, small-flower pellitory, [2] or native pellitory, is a herb native to Australia and New Zealand. Description [ edit ]
The flowers are solitary or borne in umbels. The flower has six petals each up to 5 centimeters (2.0 inches) long. They come in many shades of red, orange, yellow, green, purple, pink, and white, flecked and striped and streaked with darker colors.
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