• WordNet 3.6
    • n Asteridae a group of mostly sympetalous herbs and some trees and shrubs mostly with 2 fused carpels; contains 43 families including Campanulales; Solanaceae; Scrophulariaceae; Labiatae; Verbenaceae; Rubiaceae; Compositae; sometimes classified as a superorder
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In literature:

No existing classification of the Asterida is satisfactory even for the recent forms, still less when the older fossils are considered.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 10" by Various