Hamamelididae

Encyclopedia : H : HA : HAM : Hamamelididae

Hamamelididae is a botanical name at the rank of subclass. A well-known system that used this name is the Cronquist system, although in the disallowed spelling Hamamelidae. 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, of the subclass will vary with the being used; the only requirement being that it includes the family Hamamelidaceae. The APG II system that was adopted for the wikipedia Tree of Life (as in taxoboxes) does not use formal botanical names above the rank of order: within wikipedia this name is taxonomically undefined. APG II places most of the taxa involved in the rosids.

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