Commelinidae
Encyclopedia
Commelinidae is a botanical name
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...

 at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used (there are many such systems); the only requirement being that it includes the family Commelinaceae
Commelinaceae
Commelinaceae is a family of flowering plants. In less formal contexts, the group is referred to as the dayflower family or spiderwort family. It is one of five families in the order Commelinales and by far the largest of these with an estimated 650 species in 40 genera. Well known genera include...

. A well-known system that did use this name is 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), but it was also used by the Takhtajan system
Takhtajan system
A system of plant taxonomy, the Takhtajan system of plant classification was published by Armen Takhtajan, in several versions from the 1950s onwards. It is usually compared to the Cronquist system. Key publications:-External links:* Takhtajan system at...

:

Commelinidae in the Takhtajan system

In the Takhtajan system
Takhtajan system
A system of plant taxonomy, the Takhtajan system of plant classification was published by Armen Takhtajan, in several versions from the 1950s onwards. It is usually compared to the Cronquist system. Key publications:-External links:* Takhtajan system at...

 treats this as one of six subclasses within the 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). It consists of
  • subclass Commelinidae
    superorder Bromelianae
    order Bromeliales
    Bromeliales
    The Bromeliales is the botanical name of an order of flowering plants. Such an order has been recognized by a few systems of plant taxonomy, with a various placement. It appears that it always has had the same circumscription:...

    order Velloziales
    superorder Pontederianae
    order Philydrales
    order Pontederiales
    order Haemodorales
    superorder Zingiberanae
    order Musales
    order Lowiales
    order Zingiberales
    Zingiberales
    Zingiberales is an order of flowering plants. The order has been widely recognised by the taxonomists, at least for the past few decades. This order includes many familiar plants like ginger, cardamom, turmeric, galangal and myoga of the Zingiberaceae or ginger family, and bananas and plantains...

    order Cannales
    superorder Commelinanae
    order Commelinales
    Commelinales
    Commelinales is the botanical name of an order of flowering plants. It comprises five families: Commelinaceae, Haemodoraceae, Hanguanaceae, Philydraceae, and Pontederiaceae. All the families combined contain over 800 species in about 70 genera; the majority of species are in the Commelinaceae...

    order Mayacales
    order Xyridales
    order Rapateales
    order Eriocaulales
    Eriocaulales
    Eriocaulales is a botanical name for an order of flowering plants. The name was published by Nakai. In the Cronquist system the name was used for an order placed in the subclass Commelinidae. The order consisted of one family only :...

    superorder Hydatellanae
    order Hydatellales
    Hydatellales
    Hydatellales is a botanical name for an order of flowering plants. In the Cronquist system, 1981, the name was used for an order placed in the subclass Commelinidae in class Liliopsida [=monocotyledons]...

    superorder Juncanae
    order Juncales
    Juncales
    Juncales is a botanical name for an order of flowering plants. In the Engler system and in the Cronquist system it is circumscribed as:* order Juncales*: family Juncaceae...

    order Cyperales
    Cyperales
    Cyperales is a name for an order of flowering plants. As used in the Engler system and in the Wettstein system it consisted of only the single family...

    superorder Poanae
    order Flagellariales
    order Restionales
    Restionales
    Restionales is a botanical name for an order of flowering plants. In the Cronquist system it is used for an order and circumscribed as:* order Restionales*: family Flagellariaceae...

    order Centrolepidales
    order Poales
    Poales
    Poales is a large order of flowering plants in the monocotyledons, and includes families of plants such as the grasses, bromeliads, and sedges. Sixteen plant families are currently recognized by botanists to be part of Poales....


Commelinidae in the Cronquist system

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...

 treats this as one of four subclasses within the 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). It consists of:
  • subclass Commelinidae
    order Commelinales
    Commelinales
    Commelinales is the botanical name of an order of flowering plants. It comprises five families: Commelinaceae, Haemodoraceae, Hanguanaceae, Philydraceae, and Pontederiaceae. All the families combined contain over 800 species in about 70 genera; the majority of species are in the Commelinaceae...

    order Eriocaulales
    Eriocaulales
    Eriocaulales is a botanical name for an order of flowering plants. The name was published by Nakai. In the Cronquist system the name was used for an order placed in the subclass Commelinidae. The order consisted of one family only :...

    order Restionales
    Restionales
    Restionales is a botanical name for an order of flowering plants. In the Cronquist system it is used for an order and circumscribed as:* order Restionales*: family Flagellariaceae...

    order Juncales
    Juncales
    Juncales is a botanical name for an order of flowering plants. In the Engler system and in the Cronquist system it is circumscribed as:* order Juncales*: family Juncaceae...

    order Cyperales
    Cyperales
    Cyperales is a name for an order of flowering plants. As used in the Engler system and in the Wettstein system it consisted of only the single family...

    order Hydatellales
    Hydatellales
    Hydatellales is a botanical name for an order of flowering plants. In the Cronquist system, 1981, the name was used for an order placed in the subclass Commelinidae in class Liliopsida [=monocotyledons]...

    order Typhales
    Typhales
    Typhales is a botanical name for an order of flowering plants. In the Cronquist system the name was used for an order placed in the subclass Commelinidae. The order consisted of :* order Typhales*: family Sparganiaceae...


APG system

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...

 does not use formal botanical names above the rank of order; most of the plants involved here are assigned to the clade commelinids
Commelinids
In plant taxonomy, commelinids is a name used by the APG III system for a clade within the monocots, which in its turn is a clade within the angiosperms. The commelinids are the only clade that the APG has informally named within the monocots...

in the monocots (its predecessor, 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...

 knew the clade commelinoids).
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