Hamamelidales
Encyclopedia
Hamamelidales is the botanical name
of an order of flowering plants. The Cronquist system
(1981) included the order in subclass Hamamelidae with the circumscription:
Molecular systematic studies have suggested that these families are not closely related to each other and the APG II system
(2003) assigns them to several different orders: Hamamelidaceae and Cercidiphyllaceae to Saxifragales
, Eupteleaceae to Ranunculales
, Platanaceae to Proteales
, and Myrothamnaceae to Gunnerales
.
Botanical name
A botanical name is a formal scientific name conforming to the International Code of Botanical Nomenclature and, if it concerns a plant cultigen, the additional cultivar and/or Group epithets must conform to the International Code of Nomenclature for Cultivated Plants...
of an order of flowering plants. The Cronquist system
Cronquist system
The Cronquist system is a taxonomic classification system of flowering plants. It was developed by Arthur Cronquist in his texts An Integrated System of Classification of Flowering Plants and The Evolution and Classification of Flowering Plants .Cronquist's system places flowering plants into two...
(1981) included the order in subclass Hamamelidae with the circumscription:
- order Hamamelidales
- family HamamelidaceaeHamamelidaceaeThe Hamamelidaceae is a family of flowering plants in the order Saxifragales, including 27 genera and about 80-90 species, all shrubs and small trees...
- family Cercidiphyllaceae
- family EupteleaceaeEupteleaceaeEupteleaceae is a family of flowering plants.The family has been recognized by many taxonomists. The APG II system , recognizes it and places it in the order Ranunculales, in the clade eudicots. The family consists of a single genus Euptelea, with two species, native to eastern Asia.-External...
- family PlatanaceaePlatanusPlatanus is a small genus of trees native to the Northern Hemisphere. They are the sole living members of the family Platanaceae....
- family MyrothamnaceaeMyrothamnusMyrothamnus is the botanical name of a genus of flowering plants, consisting of two species of small xerophytic shrubs, in the southern parts of tropical Africa and in Madagascar....
- family Hamamelidaceae
Molecular systematic studies have suggested that these families are not closely related to each other and the APG II system
APG II system
The APG II system of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Group. It was a revision of the first APG system, published in 1998, and was superseded in 2009...
(2003) assigns them to several different orders: Hamamelidaceae and Cercidiphyllaceae to Saxifragales
Saxifragales
Saxifragales is an order of flowering plants. Their closest relatives are a large eudicot group known as the rosids by the definition of rosids given in the APG II classification system. Some authors define the rosids more widely, including Saxifragales as their most basal group. Saxifragales is...
, Eupteleaceae to Ranunculales
Ranunculales
Ranunculales is an order of flowering plants. Of necessity it contains the family Ranunculaceae, the buttercup family, because the name of the order is based on the name of a genus in that family. Ranunculales belongs to a paraphyletic group known as the basal eudicots...
, Platanaceae to Proteales
Proteales
Proteales is the botanical name of an order of flowering plants. Such an order has been recognized by almost all taxonomists.-Families:The APG II system, of 2003, also recognizes this order, and places it in the clade eudicots with this circumscription:...
, and Myrothamnaceae to Gunnerales
Gunnerales
Gunnerales is an order of flowering plants. In the APG III system it contains two genera: Gunnera and Myrothamnus. These are assigned to two separate families . In the Cronquist system Gunneraceae was placed in the Haloragales and Myrothamnaceae in the Hamamelidales.-External links:* in Stevens,...
.