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A typical Asteraceae flower head showing the (five) individual ray florets and the (approximately 16) disk florets of a specimen of (Bidens torta) In plants of the Asteraceae, what appears to be a single "daisy"-type flower is actually a composite of several much smaller flowers, known as the capitulum or head.
The ray floret is female with one pistil containing one style, two stigmas, and an ovary with one ovule. Labeled parts are as follows: Labeled parts are as follows: 1 – corolla (petals) (three petals are joined to form a strap, and in the case of 5 petals, they form a ligule);
The florets of Tagetes erecta are rich in the orange-yellow carotenoid lutein and are used as a food colour (INS number E161b) in the European Union for foods such as pasta, vegetable oil, margarine, mayonnaise, salad dressing, baked goods, confectionery, dairy products, ice cream, yogurt, citrus juice and mustard. In the United States, however ...
The ray florets have been used in lettuce salads and other foods to add colour and flavour. The flowers are rich in carotenoids, and are thus used to make food and feed pigments. [ 29 ] The dried flower petals, ground to a powder, are used in poultry feed to ensure a good colouration of egg yolks and broiler skin, especially in the absence of ...
Felicia oleosa is an evergreen, richly branched dwarf shrub of up to 30 cm (12 in) high, that is assigned to the family Asteraceae. It has narrow, awl-shaped leaves, with translucent oil or resin dots, pointing upwards, crowded on the younger stems. The flower heads have about thirteen bright blue ray florets, encircling many yellow disc florets.
The 15–33 ray florets are blue, pink, purple, or white, with a length averaging 5–7 mm (1 ⁄ 5 – 3 ⁄ 10 in) [c] and width of 1–1.7 mm (1 ⁄ 24 – 1 ⁄ 16 in). [5] Ray florets in the Symphyotrichum genus are exclusively female, each having a pistil (with style , stigma , and ovary ) but no stamen ; thus, ray florets accept pollen ...
Either ray or disk flowers may be absent in some plants: Senecio vulgaris lacks ray flowers [4] and Taraxacum officinale lacks disk flowers. [4] [5] The individual flowers of a pseudanthium in the family Asteraceae (or Compositae) are commonly called florets. [6] The pseudanthium has a whorl of bracts below the flowers, forming an involucre.
Each head bears approximately 8 yellowish ray florets a few millimeters long around a center of several disc florets tipped with dark anthers. The fruit is a flat, hairless achene with no pappus. This plant has been grown for its seed oil. [5]