Division Magnoliophyta (formerly Phylum
Class Magnoliopsida (formerly Class
Subclass Asteridae (formerly Subclass
Family Compositae (also Asteraceae)
The composite family is the largest, most diverse plant family known.
It contains 1500+ genera and 15000+ species, including many familiar
flowers and vegetables. All composites share a single characteristic:
their flowers are grouped into heads, with enlarged sepals or bracts taking
the place of petals.
If one is to follow the modern convention of naming a suprageneric group after a a "type" genus, this family should be named Asteraceae, and indeed this name appears in much of the scientific literature.
This family contains so many genera that it would be pointless to list
them all in one writeup. In this instance, the family's tribes become
important for organizing all of the genera; there should be a node for
each tribe. Not surprisingly, some botanists elevate each tribe to
a family of its own; to find a family name, remove the -eae part
from the end and tack on -aceae.
Tribe Ambrosieae (ragweed, cocklebur), often considered a subtribe
Ambrosiinae of Helianthieae
Tribe Anathemideae (108) (chamomile, yarrow, chrysanthemum, wormwood,
Tribe Astereae (178) (aster, goldenrod)
Tribe Calenduleae (8)
Tribe Cotuleae, sometimes consuidered a subtribe of Anathemideae
Tribe Gnaphalineae (183) (cudweed)
Tribe Helenieae (93)
Tribe Heliantheae (196) (sunflower, dahlia, coneflower, black-eyed susan,
Tribe Inuleae (38) (strawflower, curry)
Tribe Plucheae (28)
Tribe Senecioneae (119) (ragwort)
Tribe Tagateae (19) (marigold), sometimes considered a subtribe
of the Heliantheae
Subfamily Lactucoideae (Cichorioideae):
James L. Reveal, PBIO 450 Lecture Notes, Selected Families of Angiosperms:
Asteraceae, Families of Vascular plants, Botany 307, University of Toronto,
L. Watson and M. J. Dallwitz (1992 onwards). The Families of Flowering Plants: Descriptions, Illustrations, Identification, and Information Retrieval. Version: 14th December 2000.
List of genera in Compositae