Lamiales

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Lamiales
Temporal range: Ypresian-Recent [1]
Galeopsis speciosa (Zellwald).jpg
Galeopsis speciosa
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Clade: Lamiids
Order: Lamiales
Bromhead [2]

The order Lamiales (also known as the mint order) are an order in the asterid group of dicotyledonous flowering plants. [3] [4] It includes about 23,810 species, 1,059 genera, and is divided into about 25 families. [3] These families include Acanthaceae, Bignoniaceae, Byblidaceae, Calceolariaceae,Carlemanniaceae, Gesneriaceae, Lamiaceae, Lentibulariaceae, Linderniaceae, Martyniaceae, Mazaceae, Oleaceae, Orobanchaceae, Paulowniaceae, Pedaliaceae, Peltantheraceae, Phrymaceae, Plantaginaceae, Plocospermataceae, Schlegeliaceae, Scrophulariaceae, Stilbaceae, Tetrachondraceae, Thomandersiaceae, Verbenaceae. [3]

Contents

Being one of the largest orders of flowering plants, Lamiales have representatives found all over the world. Well-known or economically important members of this order include lavender, lilac, olive, jasmine, the ash tree, teak, snapdragon, sesame, psyllium, garden sage, and a number of table herbs such as mint, basil, and rosemary. [5]

Description

Example of Lamiales characteristics (shown on species Lavandula angustifolia) Lavandula angustifolia - Kohler-s Medizinal-Pflanzen-087.jpg
Example of Lamiales characteristics (shown on species Lavandula angustifolia )

Plant species within the order Lamiales are eudicots and are herbaceous or have woody stems. [4] Zygomorphic flowers are common in Lamiales, having five petals with an upper lip of two petals and lower lip of three petals, however actinomorphic flowers are also seen. [4]   [6] Plant species within the order Lamiales potentially have five stamens, but these are typically reduced to two or four. [4] [6] Lamiales also produce a single style attached to an ovary typically containing two carpels. [7] The ovary in the Lamiales order is mostly observed to be superior. [8]  Lamiales inflorescence is typically seen as cyme, raceme or spike. [5]  Fruit type in Lamiales order is usually dehiscent capsules. [9]  Glandular hairs are present in Lamiales. [4]

Habitat

The Lamiales order can be found in almost all kinds of habitats world-wide. [10] These habitats include forests, valleys, grasslands, rocky terrain, rainforests, the tropics, temperate regions, marshes, coastlines, and even frozen areas. [8] [10] [11]

Carnivore plants

Carnivorous plant in the order Lamiales; Utricularia aurea Utricularia aurea 8 Darwiniana.jpg
Carnivorous plant in the order Lamiales; Utricularia aurea

A number of species of carnivorous plants are found in the Lamiales, in the families Lentibulariaceae and Byblidaceae. [5] Protocarnivorous plant species have also been found in the order Lamiales, specifically in the families Martyniaceae. [5]

Parasitic plants

Parasitic plant in the order Lamiales; Cordylanthus rigidus Cordylanthusrigidus.jpg
Parasitic plant in the order Lamiales; Cordylanthus rigidus

Parasitic plant species are found in the order Lamiales, belonging to the family Orobanchaceae. [5] These parasitic plants can either be hemi-parasites or holoparasites. [5]

Uses

The order Lamiales has a variety of species with anthropogenic uses, the most popular belonging to the Lamiaceae and Acanthaceae families. [11] Many of these species in the order Lamiales produce medicinal properties from alkaloids and saponins to help a variety of infections and diseases. [11] These alkaloids and saponins may help with digestion, the common cold or flu, asthma, liver infections, pulmonary infections and contain antioxidant properties. [11]

Plant species within the order Lamiales are also known to have properties to repel insects and help control harmful diseases from insects, such as Malaria from mosquitos. [12] [11] The plant family Acanthaceae within the Lamiales order have bioactive secondary metabolites within their mature leaves, which have been found to be toxic to insect larvae. [12] Botanical derived insecticides are a good alternate for chemical or synthetic insecticides as it is inexpensive, abundant and safe for other plants, non-target organisms and the environment. [12]

Many species within the order Lamiales are also used as decorations, flavouring agents, cosmetics and fragrances. [11] Natural dyes can also be extracted from plant species within Lamiales. [11] [13] For example, in Sardinia culture, the most common Lamiales plant species used for natural dyes is Lavandula stoechas, where a light-green dye is extracted from the stem [13]

Taxonomy

The Lamiales previously had a restricted circumscription (e.g., by Arthur Cronquist) that included the major families Lamiaceae (Labiatae), Verbenaceae, and Boraginaceae, plus a few smaller families. In the classification system of Dahlgren the Lamiales were in the superorder Lamiiflorae (also called Lamianae). Recent phylogenetic work has shown the Lamiales are polyphyletic with respect to order Scrophulariales and the two groups are now usually combined in a single order that also includes the former orders Hippuridales and Plantaginales. Lamiales has become the preferred name for this much larger combined group. The placement of the Boraginaceae is unclear, but phylogenetic work shows this family does not belong in Lamiales.[ citation needed ]

Also, the circumscription of family Scrophulariaceae, formerly a paraphyletic group defined primarily by plesiomorphic characters and from within which numerous other families of the Lamiales were derived, has been radically altered to create a number of smaller, better-defined, and putatively monophyletic families. [14]

Dating

Much research has been conducted in recent years regarding the dating the Lamiales lineage, although there still remains some ambiguity. A 2004 study, on the molecular phylogenetic dating of asterid flowering plants, estimated 106 million years (MY) for the stem lineage of Lamiales. [15] A 2009 study on angiosperm diversification through time, concluded an inferred age of lower Eocene, ca. 50 MY, for Lamiales. [5]

Related Research Articles

<span class="mw-page-title-main">Lamiaceae</span> Family of flowering plants that includes sage and mint

The Lamiaceae or Labiatae are a family of flowering plants commonly known as the mint, deadnettle or sage family. Many of the plants are aromatic in all parts and include widely used culinary herbs like basil, mint, rosemary, sage, savory, marjoram, oregano, hyssop, thyme, lavender, and perilla, as well as other medicinal herbs such as catnip, salvia, bee balm, wild dagga, and oriental motherwort. Some species are shrubs, trees, or, rarely, vines. Many members of the family are widely cultivated, not only for their aromatic qualities, but also their ease of cultivation, since they are readily propagated by stem cuttings. Besides those grown for their edible leaves, some are grown for decorative foliage. Others are grown for seed, such as Salvia hispanica (chia), or for their edible tubers, such as Plectranthus edulis, Plectranthus esculentus, Plectranthus rotundifolius, and Stachys affinis. Many are also grown ornamentally, notably coleus, Plectranthus, and many Salvia species and hybrids.

<span class="mw-page-title-main">Malpighiales</span> Eudicot order of flowering plants

The Malpighiales comprise one of the largest orders of flowering plants, containing about 36 families and more than 16,000 species, about 7.8% of the eudicots. The order is very diverse, containing plants as different as the willow, violet, poinsettia, manchineel, rafflesia and coca plant, and are hard to recognize except with molecular phylogenetic evidence. It is not part of any of the classification systems based only on plant morphology. Molecular clock calculations estimate the origin of stem group Malpighiales at around 100 million years ago (Mya) and the origin of crown group Malpighiales at about 90 Mya.

<span class="mw-page-title-main">Vitaceae</span> Family of flowering plants that includes grapes and Virginia creeper

The Vitaceae are a family of flowering plants, with 14 genera and around 910 known species, including common plants such as grapevines and Virginia creeper. The family name is derived from the genus Vitis.

<span class="mw-page-title-main">Cornales</span> Order of flowering plants

The Cornales are an order of flowering plants, early diverging among the asterids, containing about 600 species. Plants within the Cornales usually have four-parted flowers, drupaceous fruits, and inferior to half-inferior gynoecia topped with disc-shaped nectaries.

<span class="mw-page-title-main">Scrophulariaceae</span> Figwort family of flowering plants

The Scrophulariaceae are a family of flowering plants, commonly known as the figwort family. The plants are annual and perennial herbs, as well as shrubs. Flowers have bilateral (zygomorphic) or rarely radial (actinomorphic) symmetry. The Scrophulariaceae have a cosmopolitan distribution, with the majority found in temperate areas, including tropical mountains. The family name is based on the name of the included genus Scrophularia L.

<span class="mw-page-title-main">Acanthaceae</span> Family of flowering plants comprising the acanthus

Acanthaceae is a family of dicotyledonous flowering plants containing almost 250 genera and about 2500 species. Most are tropical herbs, shrubs, or twining vines; some are epiphytes. Only a few species are distributed in temperate regions. The four main centres of distribution are Indonesia and Malaysia, Africa, Brazil, and Central America. Representatives of the family can be found in nearly every habitat, including dense or open forests, scrublands, wet fields and valleys, sea coast and marine areas, swamps, and mangrove forests.

<span class="mw-page-title-main">Gesneriaceae</span> Family of flowering plants including African violets

Gesneriaceae, the gesneriad family, is a family of flowering plants consisting of about 152 genera and ca. 3,540 species in the tropics and subtropics of the Old World and the New World, with a very small number extending to temperate areas. Many species have colorful and showy flowers and are cultivated as ornamental plants.

<span class="mw-page-title-main">Plantaginaceae</span> Family of flowering plants in the order Lamiales

Plantaginaceae, the plantain family, is a large, diverse family of flowering plants in the order Lamiales that includes common flowers such as snapdragon and foxglove. It is unrelated to the banana-like fruit also called "plantain." In older classifications, Plantaginaceae was the only family of the order Plantaginales, but numerous phylogenetic studies, summarized by the Angiosperm Phylogeny Group, have demonstrated that this taxon should be included within Lamiales.

<span class="mw-page-title-main">Paulowniaceae</span> Family of trees

Paulowniaceae are a family of flowering plants within the Lamiales. They are a monophyletic and monogeneric family of trees with currently 7 confirmed species. They were formerly placed within Scrophulariaceae sensu lato, or as a segregate of the Bignoniaceae.

<span class="mw-page-title-main">Orobanchaceae</span> Family of flowering plants known as broomrapes

Orobanchaceae, the broomrapes, is a family of mostly parasitic plants of the order Lamiales, with about 90 genera and more than 2000 species. Many of these genera were formerly included in the family Scrophulariaceae sensu lato. With its new circumscription, Orobanchaceae forms a distinct, monophyletic family. From a phylogenetic perspective, it is defined as the largest crown clade containing Orobanche major and relatives, but neither Paulownia tomentosa nor Phryma leptostachya nor Mazus japonicus.

<span class="mw-page-title-main">Phrymaceae</span> Family of flowering plants

Phrymaceae, also known as the lopseed family, is a small family of flowering plants in the order Lamiales. It has a nearly cosmopolitan distribution, but is concentrated in two centers of diversity, one in Australia, the other in western North America. Members of this family occur in diverse habitats, including deserts, river banks and mountains.

<span class="mw-page-title-main">Pedaliaceae</span> Family of flowering plants

Pedaliaceae, the pedalium family or sesame family, is a flowering plant family classified in the order Lamiales. The family includes sesame, the source of sesame seeds.

<i>Rehmannia</i> Genus of flowering plants in the broomrape family Orobanchaceae

Rehmannia is a genus of seven species of flowering plants in the order Lamiales and family Orobanchaceae, endemic to China. It has been placed as the only member of the monotypic tribe Rehmannieae, but molecular phylogenetic studies suggest that it forms a clade with Triaenophora. Contrary to the immense majority of the taxa of Orobanchaceae, Rehmannia is not parasitic.

<span class="mw-page-title-main">Eudicots</span> Clade of flowering plants

The eudicots, Eudicotidae, or eudicotyledons are a clade of flowering plants mainly characterized by having two seed leaves upon germination. The term derives from Dicotyledons.

<span class="mw-page-title-main">Rosids</span> Large clade of flowering plants

The rosids are members of a large clade of flowering plants, containing about 70,000 species, more than a quarter of all angiosperms.

<span class="mw-page-title-main">Asterids</span> Clade of eudicot angiosperms

In the APG IV system (2016) for the classification of flowering plants, the name asterids denotes a clade. Asterids is the largest group of flowering plants, with more than 80,000 species, about a third of the total flowering plant species. Well-known plants in this clade include the common daisy, forget-me-nots, nightshades, the common sunflower, petunias, yacon, morning glory, sweet potato, coffee, lavender, lilac, olive, jasmine, honeysuckle, ash tree, teak, snapdragon, sesame, psyllium, garden sage, table herbs such as mint, basil, and rosemary, and rainforest trees such as Brazil nut.

<span class="mw-page-title-main">Calceolariaceae</span> Family of flowering plants

Calceolariaceae is a family of flowering plants in the order Lamiales that has been recently segregated from Scrophulariaceae. The family includes three genera, Calceolaria, Porodittia, and Jovellana, but analysis suggests that the monotypic Porodittia should be placed within Calceolaria. Recent molecular phylogenies that included Calceolaria have shown not only that this genus does not belong in Scrophulariaceae but also that it is the sister clade to the majority of the other families of the Lamiales. Morphological and chemical characters also support the separation of Calceolariaceae from Scrophulariaceae and other Lamiales. Some recent studies have supported a sister-group relationship between Calceolariaceae and Gesneriaceae. Given this close relationship, some authors opt to merge this family into Gesneriaceae as subfamily Calceolarioideae

<span class="mw-page-title-main">Cabombaceae</span> Family of flowering plants

The Cabombaceae are a family of aquatic, herbaceous flowering plants. A common name for its species is water shield. The family is recognised as distinct in the Angiosperm Phylogeny Group IV system (2016). The family consists of two genera of aquatic plants, Brasenia and Cabomba, totalling six species.

The APG system of plant classification is the first version of a modern, mostly molecular-based, system of plant taxonomy. Published in 1998 by the Angiosperm Phylogeny Group, it was replaced by the improved APG II in 2003, APG III system in 2009 and APG IV system in 2016.

References

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