Asterales

From WikiMD's Wellness Encyclopedia

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Asterales is an order of flowering plants that includes many well-known families such as the Asteraceae (daisy family) and the Campanulaceae (bellflower family). This order is part of the Asterids clade within the Eudicots, one of the two major groups of angiosperms (flowering plants).

Characteristics[edit | edit source]

Plants in the order Asterales typically have inflorescences that are arranged in a head (capitulum), which is a characteristic feature of the Asteraceae family. The flowers are often small and grouped together to form a composite flower head that can mimic a single flower. This arrangement is advantageous for attracting pollinators.

The leaves of Asterales are usually simple and can be arranged alternately, oppositely, or in a rosette. The flowers are generally bisexual and actinomorphic (radially symmetrical), although there are exceptions.

Families[edit | edit source]

The order Asterales includes the following families:

Evolution and Phylogeny[edit | edit source]

The Asterales are believed to have originated in the late Cretaceous period. Molecular phylogenetic studies have shown that the Asterales are closely related to the orders Apiales and Dipsacales within the Asterids clade.

Economic Importance[edit | edit source]

Many plants in the Asterales order are of significant economic importance. The Asteraceae family, in particular, includes many species that are cultivated for their ornamental value, such as chrysanthemums, marigolds, and zinnias. Additionally, some species are used for their medicinal properties, such as Echinacea.

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References[edit | edit source]

External Links[edit | edit source]

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Contributors: Prab R. Tumpati, MD