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A ligule is the strap-shaped tongue of the corolla of either a ray flower or of a ligulate flower. [clarification needed] [example needed] [12] A disk flower (or disc flower) is a radially symmetric individual flower in the head, which is ringed by the ray flowers when both are present. [11] [12] In some species, ray flowers may be arranged ...
The disk flowers in the center of the pseudanthium are actinomorphic and the corolla is fused into a tube. Flowers on the periphery are zygomorphic and the corolla has one large lobe (the so-called "petals" of a daisy are individual ray flowers, for example). Either ray or disk flowers may be absent in some plants: Senecio vulgaris lacks ray ...
Sunflower species (well, almost all of them) have both disk flowers (on the inside of the head), and then ray flowers (on the outside), which a lot of people, certainly not the faithful readers of ...
The outer flowers, which resemble petals, are called ray flowers. Each "petal" consists of a ligule composed of fused petals of an asymmetrical ray flower. They are sexually sterile and may be yellow, red, orange, or other colors. The spirally arranged flowers in the center of the head are called disk flowers. These mature into fruit (sunflower ...
The few slender, hairy flower stems are 20–40 cm long with a couple leafy bracts with a flowerhead of 1.5–3 cm across. [5] The flowers in the centre of the plant are disc flowers which are narrow and up to 1 cm long. [3] This means the flowers on the outside of the plant are ray flowers which are up to 2.5 cm long. [3]
Flowers. The plant is an indeterminate zygomorphic inflorescent, individual heads are borne on a peduncle. The stems are usually erect, prostrate or decumbent to ascending, and are stout and corymbed branched. [3] The flower heads are composed of five to eighteen yellow ray flowers with white tips and many central yellow disk flowers.
Gaillardia pinnatifida is a perennial growing to 22 inches (56 cm) with hairy, wavy to lobed leaves up to 3 inches (7.6 cm) long, growing to halfway up the stem, with a solitary flower head on top having 7-12 yellow ray flowers and numerous densely packed orange-brown to purple disk flowers. [3]: 78 The ray flowers are three-lobed, often deeply.
The flowers have an average of 18–38 pale lavender or lilac to pale purple petals, also called rays or ray florets. The flower centers, composed of disk florets, begin as yellow and become reddish as they mature. There are roughly 24–37 disk florets, each with five lobes. [4]