| Red dead-nettle | |
|---|---|
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Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Lamiaceae |
| Genus: | Lamium |
| Species: | L. purpureum |
| Binomial name | |
| Lamium purpureum | |
| Varieties [1] | |
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| Synonyms [1] | |
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Lamium purpureum, known as red dead-nettle, [2] purple dead-nettle, or purple archangel, [3] is an annual herbaceous flowering plant. It is native to Eurasia but can also be found in North America.
Lamium purpureum grows with square stems to 5–20 cm [4] (rarely 30 cm) in height. The leaves have fine hairs, are green at the bottom and shade to purplish at the top; they are 2–4 cm long and broad, with a 1–2 cm petiole (leaf stalk), and wavy to serrated margins.
The zygomorphic flowers are bright red-purple, with a top hood-like petal, two lower lip petal lobes and minute fang-like lobes between. The corolla shows a line of hairs near the base of the tube. [4] They may be produced throughout the year, including mild weather in winter. This allows bees to gather its nectar for food when few other nectar sources are available. It is also a prominent source of pollen for bees in March/April (in UK), when bees need the pollen as protein to build up their nest.[ citation needed ] The pollen is crimson red in colour and thus very noticeable on the heads of the bees that visit its flowers. [5] [6]
It is often found alongside henbit dead-nettle (Lamium amplexicaule), for which it is easily mistaken, because the two species bear not only similar leaves, but also similar bright purple flowers. They can, however, be distinguished from one another by the form of the leaves on their respective flowering stems: those of red dead-nettle are petiolate, while those of henbit dead-nettle are sessile. [4]
Though superficially similar to species of Urtica (true nettles) in appearance, L. purpureum is not related to them, the genus Lamium belonging to the mint family, Lamiaceae, not the nettle family Urticaceae, the "dead" in the name "dead-nettle" referring to the inability of Lamium species to sting.
The essential oil is characterized by its high contents of germacrene D. [7] The seed oil contains 16% of an acid characterized as (−)-octadeca-5,6-trans-16-trienoic acid (trivial name `lamenallenic acid'). Other unsaturated esters identified by their cleavage products are oleate, linoleate and linolenate. [8]
The plant contains phenylethanoid glycosides named lamiusides A, B, C, D and E. [9] It possesses a flavonol 3-O-glucoside-6″-O-malonyltransferase. [10]
Lamium purpureum was described and named by Carl Linnaeus in 1753. [11] It is the type species of genus Lamium. [12]
Lamium purpureum is native to Europe and Asia[ citation needed ] but it can also be found in North America.
It is a common weed in the western and eastern United States, [13] Canada, Ireland, and the British Isles. [14] It frequently occurs in meadows, forest edges, roadsides and gardens. [4]
Young plants have edible tops and leaves, used in salads or in stir-fry as a spring vegetable. If finely chopped it can also be used in sauces. [15]
The herb has a venerable pedigree in the folk medicine of England, featuring as it does as one of three medicinal/symbolic plants called for in the Anglo-Saxon herb charm Wið færstice [wiðˈfæːrˌsti.t͡ʃe] (meaning 'against a sudden/violent stabbing pain'). The charm in question (dating, according to scholarly consensus, probably from the late ninth century ) calls for the three herbs involved (the other two being feverfew and plantain) to be heated in butter to prepare an ointment, which is then rubbed on the site of the pain with the blade of a knife, while the lengthy charm is recited by the folk practitioner, who thereby aligns herself (or himself) with the patient - in contradistinction to the evil supernatural beings believed to have caused the pain with their magical arrows. [16]
To this day, herbalists use red dead-nettle in many herbal remedies. One of these is a salve prepared from the plant which can be used topically to soothe irritated, itchy, or sore skin. [17] Studies on Lamium purpureum show a strong antioxidant effect. [18]
Urtica dioica, often known as common nettle, burn nettle, stinging nettle or nettle leaf, or just a nettle or stinger, is a herbaceous perennial flowering plant in the family Urticaceae. Originally native to Europe, much of temperate Asia and western North Africa, it is now found worldwide. The species is divided into six subspecies, five of which have many hollow stinging hairs called trichomes on the leaves and stems, which act like hypodermic needles, injecting histamine and other chemicals that produce a stinging sensation upon contact.
Lythrum salicaria or purple loosestrife is a flowering plant belonging to the family Lythraceae. It should not be confused with other plants sharing the name loosestrife that are members of the family Primulaceae. Other names include spiked loosestrife and purple Lythrum. This herbaceous perennial is native to Europe and Asia, and possibly Australia.
Lamium (dead-nettles) is a genus of about 30 species of flowering plants in the family Lamiaceae, of which it is the type genus. They are all herbaceous plants native to Eurasia and northern Africa, with several widely naturalised across much of the temperate world.
Morus alba, known as white mulberry, common mulberry and silkworm mulberry, is a fast-growing, small to medium-sized mulberry tree which grows to 10–20 m (33–66 ft) tall. It is generally a short-lived tree with a lifespan comparable to that of humans, although there are some specimens known to be more than 250 years old. The species is native to China and India and is widely cultivated and naturalized elsewhere.
Hydrangea macrophylla is a species of flowering plant in the family Hydrangeaceae, native to Japan. It is a deciduous shrub growing to 2 m (7 ft) tall by 2.5 m (8 ft) broad with large heads of pink or blue flowers in summer and autumn. Common names include bigleaf hydrangea, French hydrangea, lacecap hydrangea, mophead hydrangea, and hortensia. It is widely cultivated in many parts of the world in many climates. It is not to be confused with H. aspera 'Macrophylla'.
Raphanus raphanistrum, also known as wild radish, white charlock or jointed charlock, is a flowering plant in the family Brassicaceae. The species is native to western Asia, Europe and parts of Northern Africa. It has been introduced into most parts of the world and is regarded as a habitat threatening invasive species in many areas, for example, Australia. It spreads rapidly and is often found growing on roadsides or in other places where the ground has been disturbed. The cultivated radish, widely used as a root vegetable, is sometimes considered to be one of its subspecies as Raphanus raphanistrum subsp. sativus.
Maianthemum racemosum, the treacleberry, feathery false lily of the valley, false Solomon's seal, Solomon's plume or false spikenard, is a species of flowering plant native to North America. It is a common, widespread plant with numerous common names and synonyms, known from every US state except Hawaii, and from every Canadian province and territory, as well as from Mexico.
Lamium galeobdolon, the yellow archangel, is a species of flowering plant in the mint family Lamiaceae. It is native to Europe and western Asia but it is widely introduced in North America and elsewhere. It is the only species in the genus Lamium with yellow flowers. Another common name for this species is golden dead-nettle. In New Zealand, it is called the aluminium plant or artillery plant. The common names archangel and dead-nettle have been in use for hundreds of years, dating back to at least the 16th century.
Ipomoea purpurea, the common morning-glory, tall morning-glory, or purple morning glory, is a species in the genus Ipomoea, native to Mexico and Central America.
Lamium amplexicaule, commonly known as henbit dead-nettle, is a species of Lamium native to the Old World. The specific name refers to the leaves, which are amplexicaul.
Horminum is a genus of flowering plants in the family Lamiaceae, comprising a single species, Horminum pyrenaicum. Common names include dragonmouth and Pyrenean dead-nettle.
Dactylorhiza viridis, the frog orchid, is a species of flowering plant in the orchid family Orchidaceae. It has also been treated as the only species Coeloglossum viride of the monotypic genus Coeloglossum.
Lamium album, commonly called white dead-nettle, is a flowering plant in the family Lamiaceae. It is native throughout Europe and Asia, growing in a variety of habitats from open grassland to woodland, generally on moist, fertile soils.
Henbit may refer to:
Lamium maculatum is a species of flowering plant in the family Lamiaceae, native throughout Europe and temperate Asia.
Eupatorium perfoliatum, known as common boneset or just boneset, is a North American perennial plant in the family Asteraceae. It is a common native to the Eastern United States and Canada, widespread from Nova Scotia to Florida, west as far as Texas, Nebraska, the Dakotas, and Manitoba. It is also called agueweed, feverwort, or sweating-plant. In herbal medicine, the plant is a diaphoretic, or an agent to cause sweating. It was introduced to American colonists by natives who used the plant for breaking fevers by means of heavy sweating, and commonly used to treat fever by the African-American population of the southern United States. The name "boneset" comes from the use of the plant to treat dengue fever, which is also called "break-bone fever." It is nearly always found in low, wet areas.
Eutrochium purpureum, commonly known as purple Joe-Pye weed or sweetscented joe pye weed, is an herbaceous perennial plant in the family Asteraceae. It is native to eastern and central North America, from Ontario east to New Hampshire and south as far as Florida, Louisiana, and Oklahoma.
Anisomeles malabarica, more commonly known as the Malabar catmint, is a species of herbaceous shrub in the family Lamiaceae. It is native to tropical and subtropical regions of India, and Sri Lanka, but can also be found in Malaysia, Bangladesh, Myanmar, Bismarck Archipelago, Mauritius, Andaman Islands and Réunion.
Lamium hybridum, the cut-leaved dead-nettle, is a species of Lamium native to western and northern Europe and northwestern Africa. The specific name means 'hybrid'; however, Dominique Villars, in describing the species, did not give his reasons for selecting this name. The English name refers to the deeply cut leaves, unlike the shallower lobes of other related species of Lamium.
Lamium bifidum is a species of flowering plant in the mint family Lamiaceae, native to the Southern Europe. It was first described by botanist Domenico Cirillo in 1788.
Media related to Lamium purpureum at Wikimedia Commons