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Descriptive botanical names are scientific names of groups of plants that are irregular, not being derived systematically from the name of a
type genus In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal ...
. They may describe some characteristics of the group in general or may be a name already in existence before regularised scientific nomenclature. Descriptive names can occur above or at the rank of
family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
. There is only a single descriptive below the rank of family (the subfamily Papilionoideae).


Above the rank of family

Descriptive names above the rank of family are governed by Article 16 of the
International Code of Nomenclature for algae, fungi, and plants The ''International Code of Nomenclature for algae, fungi, and plants'' (ICN) is the set of rules and recommendations dealing with the formal botanical names that are given to plants, fungi and a few other groups of organisms, all those "trad ...
(ICN), which rules that a name above the rank of family may either be ‘automatically typified’ (such as Magnoliophyta and Magnoliopsida from the type genus ''Magnolia'') or be descriptive. Descriptive names of this type may be used unchanged at different ranks (without modifying the suffix). These descriptive plant names are decreasing in importance, becoming less common than ‘automatically typified names’, but many are still in use, such as: : Plantae,
Algae Algae (; singular alga ) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular micr ...
, Musci,
Fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately fr ...
,
Embryophyta The Embryophyta (), or land plants, are the most familiar group of green plants that comprise vegetation on Earth. Embryophytes () have a common ancestor with green algae, having emerged within the Phragmoplastophyta clade of green algae as siste ...
, Tracheophyta,
Spermatophyta A spermatophyte (; ), also known as phanerogam (taxon Phanerogamae) or phaenogam (taxon Phaenogamae), is any plant that produces seeds, hence the alternative name seed plant. Spermatophytes are a subset of the embryophytes or land plants. They inc ...
,
Gymnospermae The gymnosperms ( lit. revealed seeds) are a group of seed-producing plants that includes conifers, cycads, '' Ginkgo'', and gnetophytes, forming the clade Gymnospermae. The term ''gymnosperm'' comes from the composite word in el, γυμνό ...
, Coniferae,
Coniferales The order Pinales in the division Pinophyta, class Pinopsida, comprises all the extant conifers. The distinguishing characteristic is the reproductive structure known as a cone produced by all Pinales. All of the extant conifers, such as cedar ...
,
Angiospermae Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...
, Monocotyledones, Dicotyledones, etc. Many of these descriptive names have a very long history, often preceding
Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, ...
. Some are
Classical Latin Classical Latin is the form of Literary Latin recognized as a literary standard by writers of the late Roman Republic and early Roman Empire. It was used from 75 BC to the 3rd century AD, when it developed into Late Latin. In some later period ...
common nouns in the
nominative In grammar, the nominative case ( abbreviated ), subjective case, straight case or upright case is one of the grammatical cases of a noun or other part of speech, which generally marks the subject of a verb or (in Latin and formal variants of Eng ...
plural, meaning for instance ‘the plants’, ‘the seaweeds’, ‘the mosses’. Like all names above the rank of family, these names follow the Latin grammatical rules of nouns in the plural, and are written with an initial capital letter.


At the rank of family

Article 18.5 of the ICN allows a descriptive name, of long usage, for the following eight families. For each of these families there also exists a name based on the name of an included genus (an alternative name that is also allowed, here in parentheses): * Compositae = "
composite Composite or compositing may refer to: Materials * Composite material, a material that is made from several different substances ** Metal matrix composite, composed of metal and other parts ** Cermet, a composite of ceramic and metallic materials ...
s" (alternative name: Asteraceae, based on the genus ''Aster'') * Cruciferae = "cross-bearers" (alternative name: Brassicaceae, based on the genus ''
Brassica ''Brassica'' () is a genus of plants in the cabbage and mustard family ( Brassicaceae). The members of the genus are informally known as cruciferous vegetables, cabbages, or mustard plants. Crops from this genus are sometimes called ''cole c ...
'') * Gramineae = "grasses" (alternative name: Poaceae, based on the genus '' Poa'') * Guttiferae = "latex-carriers" (alternative name: Clusiaceae, based on the genus ''
Clusia ''Clusia'' is the type genus of the plant family Clusiaceae. Comprising 300-400 species, it is native to the tropics of the Americas. The genus is named by Carl Linnaeus in honor of the botanist Carolus Clusius. The closest relatives of ''Clu ...
'') * Labiatae = "lipped ones" (alternative name: Lamiaceae, based on the genus '' Lamium'') * Leguminosae = "legumes" (alternative name: Fabaceae, based on the genus ''Faba'', now considered a section of genus ''
Vicia ''Vicia'' is a genus of over 240 species of flowering plants that are part of the legume family (Fabaceae), and which are commonly known as vetches. Member species are native to Europe, North America, South America, Asia and Africa. Some other ...
'') * Palmae = "palms" (alternative name: Arecaceae, based on the genus ''
Areca ''Areca'' is a genus of 51 species of palms in the family Arecaceae, found in humid tropical forests from the islands of the Philippines, Malaysia and India, across Southeast Asia to Melanesia. The generic name ''Areca'' is derived from a name u ...
'') * Umbelliferae = "parasol-bearers" (alternative name: Apiaceae, based on the genus '' Apium'')


Subfamily

Special provision has been made in Article 19.8 for the plant subfamily name Papilionoideae to be an alternative name of the subfamily Faboideae, because the family Papilionaceae had previously been conserved when many botanists considered it to be a separate family from Fabaceae (Leguminosae). This name is not based on any plant genus named '' Papilio'' (a butterfly), but is a descriptive name meaning that the plant has butterfly-like flowers.


References

{{DEFAULTSORT:Descriptive Botanical Names Botanical nomenclature