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A floral diagram is a graphic representation of the structure of a flower. It shows the number of floral organs, their arrangement and fusion. Different parts of the flower are represented by their respective symbols. Floral diagrams are useful for flower identification or can help in understanding angiosperm evolution.
The symbols are usually placed at the beginning of the formula, after or before the symmetry symbol. Prenner et al. recommend to use the corresponding symbols (♀ and ♂) only for flowers of separate sexuality. Ronse De Craene utilizes the words "pistillate" or "staminate" instead of the symbols.
Its leaves are lanceolate, margin undulate, apically acuminate. They feature 1 sharp point and are dark green, growing up to 1 m long. Their width is 7–12 cm or wider and they number 20-30. The inflorescence is an umbel with 10-24 flowers, six petaloid tepals, and aromatic. The flower stem is erect, as long as the leaf, and solid.
In all species the stem is normally bent 150-180° at the tip so that the nose of the flower faces downwards. Cyclamen hederifolium 'Stargazer' is an exception: its nose faces upwards. Flowers have 5 petals , bent outwards or up, sometimes twisted, and connected at the base into a cup, and five sepals behind the cup.
Magnolia grandiflora, a spiraled flower.. Depending on the family considered, the pieces of the flower can be arranged on the receptacle in two different ways. In the case of the spiral arrangement, the parts are inserted consecutively and at different levels, describing a spiral on the axis in the same way as the leaves are inserted on the stem.
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Calotropis gigantea plant in southern part of India near Bangalore Calotropis gigantea flower in Belur Math, Howrah, West Bengal. Calotropis gigantea, the crown flower, is a species of Calotropis native to Cambodia, Vietnam, Bangladesh, Indonesia, Malaysia, Thailand, Sri Lanka, India, China, Pakistan, and Nepal.
Tecoma stans is a species of flowering perennial shrub in the trumpet vine family, Bignoniaceae, that is native to the Americas.Common names include yellow trumpetbush, [3] yellow bells, [3] yellow elder, [3] ginger Thomas. [4]