Plant taxonomy is the science that finds, identifies, describes, classifies, and names
plant
Plants are predominantly photosynthetic
Photosynthesis is a process used by plants and other organisms to Energy transformation, convert light energy into chemical energy that, through cellular respiration, can later be released to fuel ...

s. It is one of the main branches of
taxonomy
Taxonomy (general) is the practice and science of classification of things or concepts, including the principles that underlie such classification. The term may also refer to a specific classification scheme. Originally used only about biological ...
(the science that finds, describes, classifies, and names living things).
Plant taxonomy is closely allied to
plant systematics, and there is no sharp boundary between the two. In practice, "plant systematics" involves relationships between plants and their
evolution
Evolution is change in the heritable
Heredity, also called inheritance or biological inheritance, is the passing on of Phenotypic trait, traits from parents to their offspring; either through asexual reproduction or sexual reproduction, ...

, especially at the higher levels, whereas "plant taxonomy" deals with the actual handling of plant
specimens. The precise relationship between taxonomy and systematics, however, has changed along with the goals and methods employed.
Plant taxonomy is well known for being turbulent, and traditionally not having any close agreement on
circumscription
Circumscription may refer to:
*Circumscribed circle
*Circumscription (logic)
*Circumscription (taxonomy)
*Circumscription theory, a theory about the origins of the political state in the history of human evolution proposed by the American anthropol ...
and placement of
taxa
In biology
Biology is the natural science that studies life and living organisms, including their anatomy, physical structure, Biochemistry, chemical processes, Molecular biology, molecular interactions, Physiology, physiological mechanism ...
. See the
list of systems of plant taxonomy
This list of systems of plant taxonomy presents "taxonomic systems" used in plant classification.
A taxonomic system
Taxonomy (general) is the practice and science of classification of things or concepts, including the principles that underlie ...
.
Background
Classification systems serve the purpose of grouping organisms by characteristics common to each group. Plants are distinguished from animals by various traits: they have
cell walls
Cell most often refers to:
* Cell (biology)
The cell (from Latin ''cella'', meaning "small room") is the basic structural, functional, and biological unit of all known organisms. Cells are the smallest units of life, and hence are often refer ...
made of
cellulose
Cellulose is an organic compound with the chemical formula, formula , a polysaccharide consisting of a linear chain of several hundred to many thousands of glycosidic bond, β(1→4) linked glucose, D-glucose units. Cellulose is an important stru ...

,
polyploidy
Polyploidy is a condition in which the cell
Cell most often refers to:
* Cell (biology), the functional basic unit of life
Cell may also refer to:
Closed spaces
* Monastic cell, a small room, hut, or cave in which a monk or religious recluse ...
, and they exhibit sedentary growth. Where animals have to eat organic molecules, plants are able to change energy from light into organic energy by the process of
photosynthesis
Photosynthesis is a process used by plants and other organisms to into that, through , can later be released to fuel the organism's activities. Some of this chemical energy is stored in molecules, such as s and es, which are synthesized fro ...

. The basic unit of classification is
species
In biology, a species is the basic unit of biological classification, classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individu ...

, a group able to breed amongst themselves and bearing mutual resemblance, a broader classification is the
genus
Genus /ˈdʒiː.nəs/ (plural genera /ˈdʒen.ər.ə/) is a taxonomic rank
In biological classification
In biology, taxonomy () is the scientific study of naming, defining (Circumscription (taxonomy), circumscribing) and classifying gr ...
. Several genera make up a family, and several families an order.
''Plantae'', the Plant Kingdom
The plant kingdom is divided according to the following:
Identification, classification and description of plants
Three goals of plant taxonomy are the identification, classification and description of plants. The distinction between these three goals is important and often overlooked.
1.
Plant identification
In biology, determination is the process of matching a specimen of an organism to a known taxon
In biology
Biology is the natural science that studies life and living organisms, including their anatomy, physical structure, Biochemistry, ch ...
is a determination of the identity of an unknown plant by comparison with previously collected specimens or with the aid of books or identification manuals. The process of identification connects the specimen with a published name. Once a plant specimen has been identified, its name and properties are known.
2.
Plant classification
Image:ViennaDioscoridesAuthorPortrait.jpg, upright=1.5, The ''Vienna Dioscurides'' manuscript of ''De Materia Medica'', from the early sixth century, is one of the oldest herbals in existence. Dioscorides wrote the book between 50 and 60 AD.
The hi ...
is the placing of known plants into groups or categories to show some relationship.
Scientific classification
In biology
Biology is the natural science that studies life and living organisms, including their anatomy, physical structure, Biochemistry, chemical processes, Molecular biology, molecular interactions, Physiology, physiological mecha ...

follows a system of rules that standardizes the results, and groups successive categories into a
hierarchy
A hierarchy (from the Greek: , from , 'president of sacred rites') is an arrangement of items (objects, names, values, categories, etc.) in which the items are represented as being "above", "below", or "at the same level as" one another. Hierarch ...

. For example, the
family
In human society
A society is a Social group, group of individuals involved in persistent Social relation, social interaction, or a large social group sharing the same spatial or social territory, typically subject to the same Politic ...
to which the
lilies
''Lilium'' is a genus of Herbaceous plant, herbaceous flowering plants growing from bulbs, all with large prominent flowers. They are the true lilies. Lilies are a group of flowering plants which are important in culture and literature in much o ...

belong is classified as follows:
* Kingdom:
Plant
Plants are predominantly photosynthetic
Photosynthesis is a process used by plants and other organisms to Energy transformation, convert light energy into chemical energy that, through cellular respiration, can later be released to fuel ...

ae
* Division:
Magnoliophyta
Flowering plants include multiple members of the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek
Greek may refer to:
Greece
Anything of, from, or related to Greece
Greece ( el, Ελλά ...
* Class:
Liliopsida
Liliopsida Batsch
August Johann Georg Karl Batsch (28 October 1761 – 29 September 1802) was a German naturalist
Natural history is a domain of inquiry involving organisms, including animals, fungus, fungi, and plants, in their natural env ...
* Order:
Liliales
Liliales is an order
Order or ORDER or Orders may refer to:
* Orderliness
Orderliness is associated with other qualities such as cleanliness
Cleanliness is both the abstract state of being clean and free from germs, dirt, trash, or waste, and ...
* Family:
Liliaceae
The lily family
In human society
A society is a Social group, group of individuals involved in persistent Social relation, social interaction, or a large social group sharing the same spatial or social territory, typically subject ...

The classification of plants results in an organized system for the naming and cataloging of future specimens, and ideally reflects scientific ideas about inter-relationships between plants. The set of rules and recommendations for formal botanical nomenclature, including plants, is governed by the
abbreviated as ICN.
3.
Plant description is a formal description of a newly discovered
species
In biology, a species is the basic unit of biological classification, classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individu ...

, usually in the form of a
scientific paper
: ''For a broader class of literature, see Academic publishing
Academic publishing is the subfield of publishing which distributes academic research and scholarship. Most academic work is published in academic journal articles, books or thes ...
using ICN guidelines. The names of these plants are then registered on the
International Plant Names Index
The International Plant Names Index (IPNI) describes itself as "a database
In computing
Computing is any goal-oriented activity requiring, benefiting from, or creating computing machinery. It includes the study and experimentation of algorith ...
along with all other validly published names.
Classification systems
These include;
*
APG system The APG system (Angiosperm Phylogeny Group system) of plant classification is the first version of a modern, mostly molecular
A scanning tunneling microscopy image of pentacene molecules, which consist of linear chains of five carbon rings.
...
(''angiosperm phylogeny group'')
**
APG II system (''angiosperm phylogeny group II'')
**
APG III system
The APG III system of flowering plant classification is the third version of a modern, mostly molecular-based, system of plant taxonomy being developed by the Angiosperm Phylogeny Group (APG). Published in 2009, it was superseded in 2016 by a fu ...
(''angiosperm phylogeny group III'')
**
APG IV systemAPG is an abbreviation with several different meanings:
* Aberdeen Proving Ground, a United States Army installation in Aberdeen, Maryland, also
** Phillips Army Airfield, the airfield of the above, from its IATA airport code
* Aboriginal Provision ...
(''angiosperm phylogeny group IV'')
*
Bessey system (''a system of plant taxonomy'')
*
Cronquist systemCronquist can refer to:
* Arthur J. Cronquist, a North American botanist (1919–1992).
* The Cronquist system, a system attributed to Arthur J. Cronquist. Many authors use their own variation of this system, which they also refer to as the ...
(''taxonomic classification of flowering plants'')
*
Melchior system
This is the named Melchior system, "a reference in all Taxonomy (biology), taxonomic courses", detailing the List of systems of plant taxonomy, taxonomic system of the Flowering plant, Angiospermae according to Adolf Engler, A. Engler's ''Syllabus d ...
Online databases
*
Ecocrop
*
EPPO Code
*
GRIN
See
Online botany databases
See also
*
American Society of Plant TaxonomistsThe American Society of Plant Taxonomists (ASPT) is a botanical organization formed in 1935 to "foster, encourage, and promote education and research in the field of plant taxonomy, to include those areas and fields of study that contribute to and b ...
*
Biophysical environment
A biophysical environment is a life, biotic and Abiotic component, abiotic surrounding of an organism or population, and consequently includes the factors that have an influence in their survival, development, and evolution. A biophysical enviro ...
*
Botanical nomenclature
Botanical nomenclature is the formal, scientific naming of plants. It is related to, but distinct from taxonomy
Taxonomy (general) is the practice and science of classification of things or concepts, including the principles that underlie such ...
*
Citrus taxonomy
Citrus taxonomy refers to the botanical classification of the species, variety (botany), varieties, cultivars, and Graft-chimaera, graft hybrids within the genus ''Citrus'' and related genera, found in cultivation and in the wild.
Citrus taxonomy ...
*
Environmental protection
Environmental protection is the practice of protecting the natural environment
The natural environment or natural world encompasses all and non-living things occurring , meaning in this case not . The term is most often applied to the or s ...
*
Herbarium
A herbarium (plural: herbaria) is a collection of preserved plant
Plants are predominantly photosynthetic
Photosynthesis is a process used by plants and other organisms to Energy transformation, convert light energy into chemical ener ...
*
History of plant systematics
upright=1.5, The ''Vienna Dioscurides'' manuscript of ''De Materia Medica'', from the early sixth century, is one of the oldest herbals in existence. Dioscorides wrote the book between 50 and 60 AD.
The history of plant systematics—the biolo ...
*
International Association for Plant Taxonomy
The International Association for Plant Taxonomy (IAPT) is an organization established to promote an understanding of plant
Plants are predominantly photosynthetic
Photosynthesis is a process used by plants and other organisms to Ener ...
*
Taxonomy of cultivated plants
References
External links
Plant systematics
{{Taxonomy of...