Hamamelididae is a botanical name at the rank of subclass. A botanical name is a formal scientific name conforming to the International Code of Botanical Nomenclature (ICBN and if the plant is a Cultigen, the A class is the Taxonomic rank in the Biological classification of organisms in Biology below phylum and above order. A well-known system that used this name is the Cronquist system, although in the disallowed spelling Hamamelidae. A system of plant taxonomy, the Cronquist system is a scheme for the classification of flowering plants (or Angiosperms) In the original 1981 version of this system the circumscription was:
- subclass Hamamelidae
- order Trochodendrales
- order Hamamelidales
- order Daphniphyllales
- order Didymelales
- order Eucommiales
- order Urticales
- order Leitneriales
- order Juglandales
- order Myricales
- order Fagales
- order Casuarinales
As is true for any botanical name, circumscription of the subclass will vary with the taxonomic system being used; the only requirement being that it includes the family Hamamelidaceae. Trochodendrales is a Botanical name for an order of Flowering plants. Hamamelidales is the Botanical name of an order of Flowering plants. The Daphiphllales are an order of the Magnoliopsida class It has only one family Daphniphyllaceae. Eucommiales is a Botanical name for an order of Flowering plants. Urticales is a Botanical name for an order of Flowering plants. Leitneria floridana ( Corkwood) the sole species in the genus Leitneria, is a Deciduous dioecious Shrub Juglandales is a botanical name for an order of Flowering plants. The Fagales are an order of Flowering plants including some of the best known Trees The order name is derived from Genus Fagus The Fagales are an order of Flowering plants including some of the best known Trees The order name is derived from Genus Fagus Casuarinaceae is a family of dicotyledonous Flowering plants placed in the order Fagales, consisting of 3 or 4 genera and approximately 70 The Hamamelidaceae is a family of Flowering plants in the order Saxifragales, including 27 genera and about 80-90 species all Shrubs and small The APG II system does not recognize named taxa above the rank of order but places most of the taxa involved in the rosids clade, with Hamamelidaceae itself in order Saxifragales. Taxonomic rank ( rank, category, taxonomic category is an abstract term used in the Scientific classification, or Taxonomy, of organisms In the APG II system for the classification of the Angiosperms the name rosids refers to a Clade, meaning a Monophyletic group of plants The Saxifragales are an order of Dicotyledon Flowering plants In the APG II classification system it includes the following families
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