Dioscoreales
Encyclopedia
Dioscoreales is a botanical name
for an order of flowering plants. Of necessity it contains the family Dioscoreaceae
.
In the APG II system
, of 2003, this order was placed in the clade monocots and comprised the families Burmanniaceae
, Dioscoreaceae
and Nartheciaceae
.
Under the APG system
of 1998, the order was placed in the clade monocots and comprised the families Burmanniaceae, Dioscoreaceae, Taccaceae, Thismiaceae
and Trichopodaceae
In APG II, the family Thismiaceae has been included in family Burmanniaceae and the families Taccaceae and Trichopodaceae have been included in family Dioscoreaceae. Therefore the change is not as large as might appear, and the only plants to have moved across the borders of the order are those belonging to family Nartheciaceae.
The Cronquist system
, of 1981, did not recognise such an order, but placed most such plants in order Liliales
in subclass Liliidae
in class Liliopsida
(monocotyledons) of division Magnoliophyta (angiosperms).
Under the Dahlgren system
, Dioscoreales was placed in the superorder Lilianae
in subclass Liliidae
(monocotyledons) of class Magnoliopsida
(angiosperms) and comprised the families Dioscoreaceae, Petermanniaceae, Rhipogonaceae
, Smilacaceae
, Stemonaceae
, Taccaceae, Trichopodaceae and Trilliaceae
.
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 an order of flowering plants. Of necessity it contains the family Dioscoreaceae
Dioscoreaceae
Dioscoreaceae is a family of monocotyledonous flowering plants, with about 750 species in eight or nine genera. The best-known member of the family is the Yam ....
.
In 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 It was a revision of the first APG system, published in 1998, and was superseded in 2009...
, of 2003, this order was placed in the clade monocots and comprised the families Burmanniaceae
Burmanniaceae
Burmanniaceae is a botanical name of a family of flowering plants, consisting of about a hundred species of herbaceous plants in roughly a dozen genera. Often they are quite remarkable plants, more often red than green, without much leaf area and not growing very big in any way.The APG II system,...
, Dioscoreaceae
Dioscoreaceae
Dioscoreaceae is a family of monocotyledonous flowering plants, with about 750 species in eight or nine genera. The best-known member of the family is the Yam ....
and Nartheciaceae
Nartheciaceae
Nartheciaceae is a botanical name of a family of flowering plants. Such a family has only rarely been recognized by systems of plant taxonomy.The APG III system does recognize such a family and places it in the order Dioscoreales, in the clade monocots...
.
Under 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, the order was placed in the clade monocots and comprised the families Burmanniaceae, Dioscoreaceae, Taccaceae, Thismiaceae
Thismiaceae
Thismiaceae is a family of flowering plants recognized by several authors Thismiaceae is a family of flowering plants recognized by several authors Thismiaceae is a family of flowering plants recognized by several authors (like J. Hutchinson, Chase et al. 1995 , 2000 ; Angiosperm Phylogeny Group...
and Trichopodaceae
In APG II, the family Thismiaceae has been included in family Burmanniaceae and the families Taccaceae and Trichopodaceae have been included in family Dioscoreaceae. Therefore the change is not as large as might appear, and the only plants to have moved across the borders of the order are those belonging to family Nartheciaceae.
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...
, of 1981, did not recognise such an order, but placed most such plants in order Liliales
Liliales
Liliales is an order of monocotyledonous flowering plants. This order of necessity includes the family Liliaceae, but both the family and the order have had a widely disputed history, with the circumscription varying greatly from one taxonomist to another...
in subclass Liliidae
Liliidae
Liliidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used ; the only requirement being that it includes the family Liliaceae....
in class Liliopsida
Liliopsida
Liliopsida is a botanical name for the class containing the family Liliaceae . It is considered synonymous with the name monocotyledon. Publication of the name is credited to Scopoli : see author citation...
(monocotyledons) of division Magnoliophyta (angiosperms).
Under the Dahlgren system
Dahlgren system
One of the modern systems of plant taxonomy, the Dahlgren system was published by monocot specialist Rolf Dahlgren. His wife Gertrud Dahlgren carried on after his death.According to the extensive listing by Professor Reveal One of the modern systems of plant taxonomy, the Dahlgren system was...
, Dioscoreales was placed in the superorder Lilianae
Lilianae
Lilianae is a botanical name, in use for a superorder . Such a superorder will of necessity include the family Liliaceae...
in subclass Liliidae
Liliidae
Liliidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used ; the only requirement being that it includes the family Liliaceae....
(monocotyledons) of class Magnoliopsida
Magnoliopsida
Magnoliopsida is a valid botanical name for a class of flowering plants. By definition the class will include the family Magnoliaceae, but its circumscription can otherwise vary, being more inclusive or less inclusive depending upon the classification system being discussed.-Cronquist and...
(angiosperms) and comprised the families Dioscoreaceae, Petermanniaceae, Rhipogonaceae
Rhipogonaceae
Rhipogonaceae is the botanical name of a family of flowering plants. The family is confined to eastern Australia, New Zealand, and New Guinea. Rhipogonaceae is composed entirely of woody vines in the genus Rhipogonum...
, Smilacaceae
Smilacaceae
Smilacaceae, the greenbrier family, is a family of flowering plants. Up to some decades ago the genera now included in family Smilacaceae were often assigned to a more broadly defined family Liliaceae, but for the past twenty to thirty years most botanists have accepted Smilacaceae as a distinct...
, Stemonaceae
Stemonaceae
Stemonaceae is a family of flowering plants, consisting of three or four genera with between 25-35 species. The APG II system places it in the order Pandanales, in the monocots...
, Taccaceae, Trichopodaceae and Trilliaceae
Trilliaceae
Trilliaceae is the botanical name of a family of flowering plants. The family has been recognised as distinct since 1846 when it was recognized; this table for a summarizes the placement of these taxa...
.