Knowra Asterales Asterales Asterales is an order of flowering plants that includes the daisy and bellflower families. Its members occur worldwide and range from herbs to shrubs and trees.
Asteraceae : A flowering-plant family characterized by composite flower heads, including daisies, sunflowers, and asters. This is Asterales’ largest and most species-rich family.
Capitulum : A dense flower head in which many small florets are arranged on a shared receptacle. This distinctive structure makes a sunflower head function visually like one large flower.
Sunflower : Helianthus annuus, an annual plant cultivated for its seeds, oil, and ornamental flower heads. This familiar Asteraceae species is one of the order’s most important crops.
Asterids : A major clade of flowering plants that includes Asterales, Gentianales, Lamiales, and other orders. This larger evolutionary group provides the context for Asterales’ origins.
Campanulaceae : The bellflower family, a group of flowering plants with often bell-shaped flowers. Bellflowers represent a distinct major family within the order.
Ray floret : A usually strap-shaped floret forming the outer edge of many flower heads in Asteraceae. Ray florets create the prominent petal-like margin of many familiar Asterales.
Lettuce : Lactuca sativa, a leafy vegetable domesticated from wild relatives in the daisy family. Lettuce shows the order’s role in global food production.
Angiosperm phylogeny : The evolutionary history and relationships among flowering plants. Phylogenetic evidence establishes Asterales’ position among flowering-plant lineages.
Goodeniaceae : A flowering-plant family concentrated in Australia, with distinctive flowers often bearing a split corolla. It is one of the order’s characteristic families outside the two best-known groups.
Pollination syndrome : A combination of floral traits associated with a particular group of pollinators. Flower shape, color, and nectar help many Asterales attract specific pollinators.
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