The Magnoliales include six families: • Annonaceae (custard apple family, over 2000 species of
trees,
shrubs, and
lianas; mostly tropical but some temperate) • Degeneriaceae (two species of trees found on Pacific islands) • Eupomatiaceae (three species of trees and shrubs found in
New Guinea and eastern
Australia) • Himantandraceae (two species of trees and shrubs, found in tropical areas in
Southeast Asia and
Australia) • Magnoliaceae (about 225 species including magnolias and
tulip trees) • Myristicaceae (several hundred species including
nutmeg)
APG system The
APG system (1998),
APG II system (2003),
APG III system (2009), and
APG IV system (2016) place this order in the clade
magnoliids, circumscribed as follows: • order Magnoliales • family Annonaceae • family
Austrobaileyaceae • family
Canellaceae • family Degeneriaceae • family Eupomatiaceae • family Himantandraceae • family
Lactoridaceae • family Magnoliaceae • family Myristicaceae • family
Winteraceae The
Thorne system (1992) placed the order in superorder Magnolianae, subclass Magnoliidae (= dicotyledons), in the class Magnoliopsida (= angiosperms) and used this circumscription (including the plants placed in order Laurales and Piperales by other systems): • order Magnoliales • family
Amborellaceae • family Annonaceae • family
Aristolochiaceae • family Austrobaileyaceae • family
Calycanthaceae • family Canellaceae • family
Chloranthaceae • family
Degeneriaceae • family Eupomatiaceae • family
Gomortegaceae • family
Hernandiaceae • family Himantandraceae • family
Illiciaceae • family Lactoridaceae • family
Lauraceae • family Magnoliaceae • family
Monimiaceae • family Myristicaceae • family
Piperaceae • family
Saururaceae • family
Schisandraceae • family
Trimeniaceae • family Winteraceae The
Engler system, in its update of 1964, placed the order in subclassis
Archychlamydeae in class
Dicotyledoneae (=dicotyledons) and used this circumscription: • order Magnoliales • family Amborellaceae • family Annonaceae • family Austrobaileyaceae • family Calycanthaceae • family Canellaceae • family
Cercidiphyllaceae • family Degeneriaceae • family Eupomatiaceae • family
Eupteleaceae • family Gomortegaceae • family Hernandiaceae • family Himantandraceae • family Illiciaceae • family Lauraceae • family Magnoliaceae • family Monimiaceae • family Myristicaceae • family Schisandraceae • family Trimeniaceae • family
Tetracentraceae • family
Trochodendraceae • family Winteraceae The
Wettstein system, latest version published in 1935, did not use this name although it had an order with a similar circumscription with the name
Polycarpicae. This was placed in the
Dialypetalae in subclass
Choripetalae of class
Dicotyledones. (See also
Sympetalae). From the above it will be clear that the plants included in this order by APG have always been seen as related. They have always been placed in the order Magnoliales (or a predecessor). The difference is that earlier systems have also included other plants, which have been moved to neighbouring orders (in the
magnoliids) by APG. ==References==