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Immature fruiting head Barbs on awn of Bidens pilosa Inflorescences. Bidens pilosa is an annual species of herbaceous flowering plant in the daisy family Asteraceae.Its many common names include hitch hikers, black-jack, beggarticks, farmer's friends and Spanish needle, but most commonly referred to as cobblers pegs.
The flower heads are solitary or borne in small corymbs. The head has a row of ray florets in shades of white, blue, pink, or mauve , and yellow disc florets. [ 1 ]
The flower head is solitary, paired, or in a group of three on the stem. The base of the head is layered with up to 60 or more rough-edged phyllaries. The Leucanthemum head has about 13 to 34 ray florets of various widths, occasionally more, and rarely none. The ray florets are always white but fade pink with age.
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.
Taraxacum officinale, the dandelion or common dandelion, [6] is a herbaceous perennial flowering plant in the daisy family, Asteraceae. The common dandelion is well known for its yellow flower heads that turn into round balls of many silver-tufted fruits that disperse in the wind. These balls are called "clocks" in both British and American ...
Argyranthemum frutescens, known as Paris daisy, [2] marguerite or marguerite daisy, is a perennial plant known for its flowers. It is native to the Canary Islands (part of Spain ). [ 3 ] Hybrids derived from this species ( garden marguerites ) are widely cultivated as ornamental plants in private gardens and public parks in many countries, and ...
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The flowers are perfect (bisexual), containing 75–100 stamens and many individual pistils with superior ovaries. [ 8 ] [ 9 ] While fruit production is largely dependent on the environment, there is an estimated growth of 30 fruits per 3m^2 (32 ft^2) and 17-65 seeds per fruit. [ 11 ]