Arecidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used (there are many such systems); the only requirement being that it includes the family Arecaceae.
Arecidae in the Takhtajan system The Takhtajan system used this name for a subclass in the class Liliopsida (=monocotyledons).
subclass Arecidae superorder Arecanae order Arecales family Arecaceae (or Palmae) order Cyclanthales family Cyclanthaceae order Arales family Araceae family Lemnaceae order Pandanales family Pandanaceae order Typhales family Sparganiaceae family Typhaceae
Arecidae in the Cronquist system The Cronquist system (1981) used this name for a subclass in the class Liliopsida (=monocotyledons), with the circumscription:
subclass Arecidae order Arecales family Arecaceae (or Palmae) order Cyclanthales family Cyclanthaceae order Pandanales family Pandanaceae order Arales family Acoraceae family Araceae family Lemnaceae
APG II system The APG II system does not use formal botanical names above the rank of order; it assigns the plants included in this subclass by Cronquist in various taxa throughout the clade monocots. In other words, by today's standards Cronquist's subclass was not a "good" group.
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