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Caladenia melanema, commonly known as the ballerina orchid, [2] is a species of orchid endemic to the south-west of Western Australia. It is a rare orchid with a single erect, hairy leaf and one or two cream-coloured to pale yellow flowers with red markings and black tips on the sepals and petals .
Each flower is 14–20 mm (0.55–0.79 in) long, with two bracts at the base, and the six tepals are strongly recurved at their tips. [8] The tepals are violet–blue. [12] The three stamens in the outer whorl are fused to the perianth for more than 75% of their length, and bear cream-coloured pollen. [8] The flowers are strongly and sweetly ...
Flower forms are variable, with one head per stem; these can be as small as 5 cm (2 in) in diameter or up to 30 cm (1 ft) ("dinner plate"). The majority of species do not produce scented flowers. Like most plants that do not attract pollinating insects through scent, they are brightly colored, displaying most hues, with the exception of blue.
What appear to be "petals" of an individual flower, are actually each individual complete ray flowers, and at the center is a dense pack of individual tiny disc flowers. Because the collection has the overall appearance of a single flower, the collection of flowers in the head of this sunflower is called a pseudanthium or a composite.
For example, male inflorescence in plants often produce more flowers than females . Furthermore, pollen export and ultimately paternity, often increases with flower number, even for plants with hermaphroditic flowers. Retention of older flowers with no pollinator rewards can lead to increased pollinator visitation rate and increased pollen removal.
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The Colorado blue columbine (A. coerulea) is the official state flower of Colorado (see also Columbine, Colorado). It is also used as a symbol of the former city of Scarborough in the Canadian province of Ontario. [24] Wild columbine (Aquilegia canadensis) growing in Sleeping Bear Dunes National Lakeshore near Glen Arbor, Michigan
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