Verbena brasiliensis

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Verbena brasiliensis
Verbena brasiliensis.jpg
Inflorescences with ichneumon wasp pollinator
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Verbenaceae
Genus: Verbena
Species:
V. brasiliensis
Binomial name
Verbena brasiliensis
Vell.
Synonyms

Verbena bonariensis auct. non L.

Verbena brasiliensis, the Brazilian verbena or Brazilian vervain, is a flowering plant species from the vervain family (Verbenaceae). It is native to parts of South America, namely Brazil, but has spread its range in recent times and has occasionally become an invasive weed. It is an annual plant with purple flowers, and it has been introduced outside of its native range as an ornamental plant, and is now largely considered an invasive weed in these regions. [1] [2]

Contents

In the past, several botanists have mistakenly applied the scientific name of the purpletop vervain, V. bonariensis, to this species. [3] As a consequence, the common names "Brazilian verbena" and "Brazilian vervain" are sometimes erroneously applied to the purpletop vervain. [4]

Description

Verbena brasiliensis is an erect herb with serrate leaves and overlapping fruits. [5] Its flowers are usually purplish in color. [6] This plant exhibits a terminal inflorescence, with flowers grouped closely together. [7] It grows as a forb, herb, or subshrub. [2] The stems are roughly 1 meter tall and mostly glabrous below and scabrous-pubescent above. While the lower branches exhibit opposite arrangement, the upper branches grow in an irregular formation. The stem is mildly indented at the nodes. The leaves are membranaceous and have connate bases and have a mildly pubescent underside. The calyx of the flowers is about 3 mm long, five-lobed, and tubular. Nerves in the calyx extend beyond the lobes to form teeth. The posterior nerve is always shortest. The corolla is formed of fused petals that spread open at the end, and is just a little longer than the calyx. The flower possesses reproductive organs of both sexes. The ovary is superior and bicarpellary. The fruit is a schizocarp, a type of dry fruit that splits when mature. It is encased in the calyx, and released by the shortest posterior nerve of the calyx. The nutlets are triangular in cross section and are about 2 mm long each. Four nutlets are generally produced by each fruit, with two per each carpel. [8] Verbena brasiliensis reproduces sexually via seed production. [9]

Verbena brasiliensis is often confused with Verbena litoralis because they are found in similar habitats. However, their inflorescences are different enough to easily separate the species. Verbena brasiliensis has short and compact spikes in open cymes, whereas Verbena litoralis has longer spikes that are arranged in paniculate cymes. [8]

Taxonomy

Verbena brasiliensis was described by Vellozo and published in Florae Fluminensis in 1829. The lectotype is located in Rio de Janeiro. [10] [11]

Synonyms include Verbena approximata Briq., Verbena brasiliensis var. brasiliensis, Verbena brasiliensis var. subglabrata Moldenke, Verbena chacensis Moldenke, Verbena hansenii Greene, Verbena isabellei Briq., Verbena litoralis f. angustifolia Chodat, Verbena litoralis var. brasiliensis (Vell.) Briq. ex Munir, Verbena litoralis f. congesta (Moldenke) Moldenke, Verbena litoralis var. congesta Moldenke, Verbena quadrangularis Vell., and Verbena paucifolia Turczaninow Bull. Soc. Imp. [10] [12]

Distribution

Verbena brasiliensis is currently found in many regions, including North America, Oceania, Africa, Asia, and Europe, where it is largely considered invasive. Verbena brasiliensis is native in South America, specifically, Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Paraguay, Peru, and Uruguay. There, it grows in dry conditions on agricultural fields and is considered a weed. In locations where it is invasive, it grows well in man-made areas or riverine environments. [7] In the United States, it is found mostly in grasslands, rangelands, riparian zones, urban areas, and wetlands. [1] The US states where the plant occurs include Oregon, California, Texas, Oklahoma, Missouri, Arkansas, Louisiana, Kentucky, Tennessee, Mississippi, Alabama, Georgia, Florida, South Carolina, North Carolina, Virginia, and Hawaii. [12]

Uses

Verbena brasiliensis has been used as a garden and ornamental plant. It has been cultivated within and largely outside of its native range for aesthetic uses. [1]

Wildlife

Bees are attracted to Verbena brasiliensis as pollinators, as documented in Florida. [13]

Verbena brasiliensis has been documented as a minor food source for large mammals and terrestrial birds, comprising 2-5% of their diet. [12]

Euphyes bayensis, or the Bay Skipper, is a small butterfly found only in herbaceous marshes in estuarine and coastal habitats. This butterfly is endemic to only two locations: one in Texas and one in Mississippi. It has been identified relying on Verbena brasiliensis as a significant source of nectar. [14]

Management

Verbena brasiliensis poses a threat to native plants because it may displace them from their natural habitat. In the mid-south United States, it is considered significantly invasive. In the National Forest System of the United States, Verbena brasiliensis is banned. [1]

In mountain ecosystems of South Africa, invasive Verbena brasiliensis was recorded spreading to increasing elevations year after year, showing its resiliency and ability to spread and adapt. [15]

To prevent the spread of this invasive weed, it is recommended that this plant is not bought, sold, or planted as ornamental decoration because of its tendency to spread beyond the intended area.

For removal of Verbena brasiliensis, the herbicide Triclopyr 480 has been successfully used on this plant in South Africa. 2,4-D has been reported successful against Verbena brasiliensis as well.

Outstar, a blend of hexazinone and sulfometuron, was tested in the southeast United States, and Verbena brasiliensis was found to be tolerant of both active ingredients. [9]

Related Research Articles

<i>Lantana</i> Genus of flowering plants

Lantana is a genus of about 150 species of perennial flowering plants in the verbena family, Verbenaceae. They are native to tropical regions of the Americas and Africa but exist as an introduced species in numerous areas, especially in the Australian-Pacific region, South and Northeastern part of India and Bangladesh. The genus includes both herbaceous plants and shrubs growing to 0.5–2 m (1.6–6.6 ft) tall. Their common names are shrub verbenas or lantanas. The generic name originated in Late Latin, where it refers to the unrelated Viburnum lantana.

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

The Verbenaceae, the verbena family or vervain family, is a family of mainly tropical flowering plants. It contains trees, shrubs, and herbs notable for heads, spikes, or clusters of small flowers, many of which have an aromatic smell.

<i>Verbena</i> Genus of plants

Verbena, also known as vervain or verveine, is a genus in the family Verbenaceae. It contains about 150 species of annual and perennial herbaceous or semi-woody flowering plants. The majority of the species are native to the Americas and Asia; however, Verbena officinalis, the common vervain or common verbena, is the type species and native to Europe.

<i>Verbena officinalis</i> Species of flowering plant

Verbena officinalis, the common vervain or common verbena, is a perennial herb native to Europe. It grows up to 70 cm high, with an upright habitus. The lobed leaves are toothed, and the delicate spikes hold clusters of two-lipped mauve flowers.

<i>Aloysia</i> Genus of flowering plants in the vervain family Verbenaceae

Aloysia is a genus of flowering plants in the verbena family, Verbenaceae. They are known generally as beebrushes. They are native to the Americas, where they are distributed in temperate climates, as well as in subtropical and desert climates. The genus is named for Maria Luisa of Parma (1751-1819), wife of King Charles IV of Spain.

<i>Stachytarpheta</i> Genus of flowering plants in the vervain family Verbenaceae

Stachytarpheta is a plant genus in the verbena family (Verbenaceae). The flowers are rich in nectar and popular with many butterflies, such as the South Asian crimson rose, Malabar banded swallowtail, and grass yellow Hummingbirds, especially small species like Lophornis coquettes, Chlorostilbon emeralds, and Discosura thorntails, are especially attracted for nectar. Several species in this genus are known as porterweeds.

<i>Duranta</i> Genus of flowering plants

Duranta is a genus of flowering plants in the verbena family, Verbenaceae. It contains 17 species of shrubs and small trees that are native from southern Florida to Mexico and South America. They are commonly cultivated as hedges and ornamental plants.

<i>Verbena bonariensis</i> Species of flowering plant

Verbena bonariensis, the purpletop vervain, clustertop vervain, Argentinian vervain, tall verbena or pretty verbena, is a member of the verbena family cultivated as a flowering annual or herbaceous perennial plant. In USA horticulture, it is also known by the ambiguous names purpletop and South American vervain. For the misapplication "Brazilian verbena" see below.

<i>Verbena hastata</i> Species of flowering plant

Verbena hastata, commonly known as American vervain, blue vervain, simpler's joy, or swamp verbena, is a perennial flowering plant in the vervain family Verbenaceae. It grows throughout the continental United States and in much of southern Canada.

<i>Vitex rotundifolia</i> Species of vine

Vitex rotundifolia, the roundleaf chastetree or beach vitex, is a species of flowering plant in the sage family Lamiaceae. It is native to seashores throughout the Pacific. Its range includes continents and islands stretching from India east to Hawaii and from Korea south to Australia. This shrub typically grows approximately 1 m in height. It has a sprawling growth habit and produces runners that root regularly at nodes. This rooting pattern allows the plant to spread rapidly. At maturity, V. rotundifolia produces blue-purple flowers that are borne in clusters and ultimately yield small brown-black fruits. Its leaves are rounded at the tips with green upper surfaces and silver lower surfaces. While the plant is a seashore obligate, it grows over a wide latitude range. It has been used for medicinal purposes throughout its native range. More recently, it was imported to the eastern United States where it has become a seashore invasive. Control efforts are presently underway to protect the fragile beach dune ecosystem.

<i>Verbena gooddingii</i> Species of flowering plant

Verbena gooddingii, commonly known as southwestern mock vervain, is a species of flowering plant in the verbena family. It is native to the southwestern United States and northern Mexico, where it occurs in sandy and rocky desert habitat.

<i>Verbena litoralis</i> Species of plant

Verbena litoralis is a species of verbena known by the common names seashore vervain and Brazilian vervain, and in Hawaiian, ōwī. It is native to the Americas from Mexico south through Central and South America to Argentina and Chile. It is present throughout the world as an introduced species and in some areas a noxious weed. It is naturalized in the contiguous United States, Puerto Rico, Hawaii, Italy, Spain, South Africa, Mauritius, the Galápagos Islands, Australia, Easter Island, French Polynesia, Japan, New Zealand, and other places. It grows in many types of habitat, including disturbed and cultivated areas.

<i>Verbena rigida</i> Species of flowering plant

Verbena rigida, known as slender vervain or tuberous vervain, is a flowering herbaceous perennial plant in the family Verbenaceae. It is native to Brazil and Argentina, and is not fully hardy in temperate climates, where consequently it is grown from seed as an annual.

<i>Stachytarpheta cayennensis</i> Species of flowering plant

Stachytarpheta cayennensis is a species of flowering plant in the verbena family known by many English language common names, including blue snakeweed, Cayenne snakeweed, dark-blue snakeweed, bluetop, nettle-leaf porterweed, rattail, rough-leaf false vervain, blue rat's tail, Brazilian tea, Cayenne vervain, false verbena, joee, nettleleaf velvetberry, and Cayenne porterweed. Names in other languages include honagasō (Japanese), gervão-urticante, piche de gato, rabo de zorro (Spanish), herbe á chenille, herbe bleue, queue de rat (French), ōi or ōwī (Hawaiian), sakura or ouchung (Chuukese), and tiāki (Māori). It is native to the Americas, from Mexico south through Central and South America to Argentina, as well as many islands of the Caribbean. It is known in many other parts of the world as an introduced species, including regions in Africa, India, Indonesia, Australia, Florida in the United States, and many Pacific Islands. Its distribution is now considered pantropical. In many places, such as New Caledonia, it has become an invasive species.

<i>Verbena simplex</i> Species of flowering plant

Verbena simplex, commonly known as narrowleaf vervain, is a perennial herbaceous plant plant in the Verbenaceae (vervain) family. It is native to central and eastern North America where it is found in open, dry, habitats on calcareous soil. It produces lavender flowers in the summer.

<i>Verbena canadensis</i> Species of flowering plant in the family Verbenaceae

Verbena canadensis, commonly known as rose mock vervain, rose verbena, clump verbena or rose vervain is a perennial herbaceous flowering plant in the verbena family (Verbenaceae) with showy pink to purple flowers.. It is native to the eastern and south-central areas of the United States. This species is widely cultivated as an ornamental, and naturalized populations have been established outside its native range, such as in the northeastern U.S.

<i>Verbena halei</i> Species of plant

Verbena halei, commonly known as Texas vervain, Texas verbena, or slender verbena, is a flowering plant in the vervain family, Verbenaceae. It is native to much of the southern United States and Mexico. Scattered populations have been found along the east coast, and its range stretches south to Florida, west to Arizona, and throughout most of Mexico. It is a perennial shrub and grows in thickets and woodland borders. Flowers bloom March to June. It has been introduced to Australia, in Queensland, New South Wales, Victoria, and South Australia.

<i>Junellia</i> Genus of Verbenaceae plants

Junellia is a genus of flowering plants in the verbena and vervain family Verbenaceae, native to the Andes, Patagonia, and the Falkland Islands.

Verbena chiricahensis, commonly named Chiricahua Mountain mock vervain or Chiricahua vervain, is a species of flowering plant in the family Verbenaceae. The specific name is sometimes misspelled as "chiricahuensis".

References

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  2. 1 2 "Plants Profile for Verbena brasiliensis (Brazilian vervain)". plants.usda.gov. Retrieved 2018-11-19.
  3. USDA (2008)
  4. E.g. USDA (2007)
  5. Weakley, Alan S. (2015). Flora of the Southern and Mid-Atlantic States. pp. 1057–1058.
  6. Yeo, P. F. (1990). "A Re-Definition of Verbena brasiliensis". Kew Bulletin. 45 (1): 101–120. doi:10.2307/4114439. JSTOR   4114439.
  7. 1 2 Verloove, Filip (2006). "Verbena brasiliensis (Verbenaceae), a New Record for the Flora of Georgia (Former USSR)". Systematics and Geography of Plants. 76 (2): 185–189. JSTOR   20649710.
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  11. "IPNI Plant Name Details". www.ipni.org. Retrieved 2018-11-19.
  12. 1 2 3 "Verbena brasiliensis Vell. — The Plant List". www.theplantlist.org. Retrieved 2018-11-19.
  13. Hall, H. Glenn; Ascher, John S. (December 2010). "Surveys of Bees (Hymenoptera: Apoidea: Anthophila) in Natural Areas of Alachua County in North-Central Florida". Florida Entomologist. 93 (4): 609–629. doi: 10.1653/024.093.0419 . ISSN   0015-4040.
  14. "Endangered and Threatened Wildlife and Plants; 12-Month Finding on a Petition to List the Bay Skipper as Endangered Or Threatened". The Federal Register. 77 (167). August 28, 2012 via ProQuest Central.
  15. Kalwij, Jesse M.; Robertson, Mark P.; van Rensburg, Berndt J. (2015-09-16). "Annual monitoring reveals rapid upward movement of exotic plants in a montane ecosystem". Biological Invasions. 17 (12): 3517–3529. doi:10.1007/s10530-015-0975-3. hdl: 2263/50270 . ISSN   1387-3547. S2CID   16237728.

References