Is the sunflower disk a inflorescence?
Should be。 Sunflowers should belong to the head in an indeterminate inflorescence.Here the first step is to define clear inflorescence flowers regularly in the peduncle the arrangement is called. Change the shape of inflorescence is complicated, the length of the spindle, branched or unbranched, each flower has no stem, the flowers open order, and other special factors etc.. Inflorescences are mainly grouped into 2 major groups: indeterminate inflorescence and finite inflorescence.Indeterminate inflorescence: characterized by the main axis of the inflorescence, which can continue to grow during anthesis and elongate upwards, producing bracts and flower buds, which are like single axis branches, so also called a single axis inflorescence. The flower opening sequence is rachides at the base of the flower blooms first, and then to the top in order to promote the orderly opening, if the rachis shortened, the flowers crowded into a plane or a sphere, the flowering order is the first starting from the edge to the middle, in turn open. The infinite inflorescence is divided into:Raceme: the inflorescence of wisteria, mustard, or rapeSpikes: grasses, sedge, etcThe inflorescence of a willowCorymb: hawthorn, pear, apple, cherry and so onCapitulum: chrysanthemum, dandelion, sunflower and so on.Fig syconium of Ficus pumila, etc.Spike: corn.Inflorescence cymose: also known as finite class features and indefinite inflorescence inflorescence, on the contrary, the top or the axis center of the flower to open, the main growth is restricted, the lateral axis can continue to grow, the lateral axis is the top first open flower, flowering order is from top to bottom or from the inside out. Classifications of finite inflorescences: single branched umbel, two branched umbel, many branched umbel. Here is no longer introduced.
A sunflower's disk is not an inflorescence but a flower.
