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A ray flower is a two- or three-lobed, strap-shaped, individual flower, found in the head of most members of the Asteraceae. [ 11 ] [ 12 ] The corolla of the ray flower may have two tiny, vestigial teeth, opposite to the three-lobed strap, or tongue, indicating its evolution by fusion from an ancestral, five-part corolla.
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. In ...
The Iroquois applied a poultice of the roots of white rattlesnake root to rattlesnake bites. It can be found growing in forests, woodlands, and anthropogenic habitats. The flower head has ray flowers only, meaning all of the individual flowers of the flower head have a strap-shaped ray, which may or may not have teeth at the very tip of the ray.
The flower heads are composed of five to eighteen yellow ray flowers with white tips and many central yellow disk flowers. Its outer ray flowers are bright golden yellow with distinct, sharp-margined white tips. The bracts tips are rounded and involucre 6–12 mm high. The corolla is 4–6 mm long. The ray flowers are 3–3.8 mm long and the ...
Symphyotrichum simmondsii is a colony-forming herbaceous perennial that grows 10 centimeters (4 inches) to 120 cm (4 ft) tall from long rhizomes.The flowers have an average of 18–38 pale lavender or lilac to pale purple petals, also called rays or ray florets.
The apparent flower is, as with most sunflowers, made up of many small flowers packed together into one head. Stems frequently end in just one flowering head, but sometimes will branch with a head at the end of each one. The petals of the ray flowers are yellow and 7.3–10.7 mm (0.29–0.42 in) long, but usually longer than 9.0 mm (0.35 in ...
The ray flowers are predominately white, [2] but will often have a slight pink or purple tint or even be quite violet. [4] [3] The tip of each ray petal has a very small, single notch. [6] The tightly-packed disk flowers in the center of the flowering head are yellow, [4] but have also been described as greenish-yellow. [6]
The ray flowers at the edge of the flowering head usually number from eight to fifteen, but may occasionally number as many as twenty-one. The petals are showy, 5–20 mm (1 ⁄ 4 – 3 ⁄ 4 in) long and fairly wide, 3–8 mm (1 ⁄ 8 – 5 ⁄ 16 in). [6] Both the ray and the disc flowers are predominantly bright yellow in color. [7]
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