Myrothamnaceae
Encyclopedia
Myrothamnaceae is the botanical name
for a family
of flowering plants. Such a family has been recognized by most taxonomists, having been included in order Hamamelidales
in the Cronquist system
. The APG II system
(2003) includes Myrothamnaceae in Gunneraceae
but allows for the optional segregation of this family from Gunneraceae. The family then consists of one genus, Myrothamnus
, assigned to the order Gunnerales
in the clade core eudicots. This represents a change from the APG system
, of 1998, which firmly recognized two separate families, unplaced as to order. The association of Myrothamnus with Gunnera is a recent one, having been supported by molecular systematic studies. As these relationships have been further explored, APG III (2009) has chosen to affirm the narrower circumscription and these two families are now considered distinct.
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...
for a family
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
of flowering plants. Such a family has been recognized by most taxonomists, having been included in order Hamamelidales
Hamamelidales
Hamamelidales is the botanical name of an order of flowering plants. The Cronquist system included the order in subclass Hamamelidae with the circumscription:* order Hamamelidales*: family Hamamelidaceae*: family Cercidiphyllaceae...
in 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...
. 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) includes Myrothamnaceae in Gunneraceae
Gunneraceae
Gunneraceae is the botanical name for a family of flowering plants. Such a family has been recognized by most taxonomists.The APG II system, of 2003, also recognizes this family and assigns it to the order Gunnerales in the clade core eudicots. The family then consists of one or two genera, Gunnera...
but allows for the optional segregation of this family from Gunneraceae. The family then consists of one genus, Myrothamnus
Myrothamnus
Myrothamnus 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....
, assigned to the order 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,...
in the clade core eudicots. This represents a change from the APG system
APG system
The APG system of plant classification is the first, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in 1998 by the Angiosperm Phylogeny Group. It was superseded in 2003 by a revision, the APG II system, and then in 2009 by a further...
, of 1998, which firmly recognized two separate families, unplaced as to order. The association of Myrothamnus with Gunnera is a recent one, having been supported by molecular systematic studies. As these relationships have been further explored, APG III (2009) has chosen to affirm the narrower circumscription and these two families are now considered distinct.
External links
- Myrothamnaceae in Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 7, May 2006.
- Myrothamnaceae in L. Watson and M.J. Dallwitz (1992 onwards). The families of flowering plants: descriptions, illustrations, identification, information retrieval. Version: 21 May 2006. http://delta-intkey.com
- NCBI Taxonomy Browser
- links at CSDL