Sunday, February 16, 2014

what is the difference between ray floret and disc floret? and Artemisia arbuscula

what is the difference between ray floret and disc floret?



major difference between the two


inflorescence best answer:

Answer by monalisa three
The most common characteristic of all these plants is an inflorescence or flower head; a densely packed cluster of many small, individual flowers, usually called florets (meaning "small flowers").

small flower with a flat strap-shaped corolla usually occupying the peripheral rings of a composite flower
ray flower
The outer perimeter of a flower head like that of a sunflower is composed of florets possessing a long strap-like petal, termed a ligule; these are the ray florets. The inner portion of the flower

The inner portion of the flower head (or disc) is composed of small flowers with tubular corollas; these are the disc florets. The composition of


inflorescence

Artemisia arbuscula
inflorescence

The inflorescence rachises of Artemisia arbuscula have tridentate leaves at least at the basal nodes, in contrast to Artemisia nova (black sagebrush) where the inflorescence rachis bears only entire leaves.



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