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Lantana camara

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Lantana camara[1]
Flowers and leaves

Secure  (NatureServe)[2]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Verbenaceae
Genus: Lantana
Species:
L. camara
Binomial name
Lantana camara
Global distribution of Lantana camara
Synonyms

Lantana aculeata L.[3]
Camara vulgaris[4]

Lantana camara (common lantana) is a species of flowering plant within the verbena family (Verbenaceae), native to the American tropics.[5][6] It is a very adaptable species, which can inhabit a wide variety of ecosystems; once it has been introduced into a habitat it spreads rapidly; between 45ºN and 45ºS and more than 1,400 metres (4,600 feet) in altitude.

It has spread from its native range to around 50 countries,[7] where it has become an invasive species.[8][9] It first spread out of the Americas when it was brought to Europe by Dutch explorers and cultivated widely, soon spreading further into Asia and Oceania where it has established itself as a notorious weed, and in Goa it was introduced by the Portuguese.[8]

L. camara can outcompete native species[1],[10] leading to a reduction in biodiversity.[11] It can also cause problems if it invades agricultural areas as a result of its toxicity to livestock, as well as its ability to form dense thickets which, if left unchecked, can greatly reduce the productivity of farmland[12]by supressing the pastures (grasses) essential for livestock production and also suppresses crops in cultivated farmlands.[2]

Description

Lantana camara is a perennial, erect sprawling or scandent, shrub which typically grows to around 2 metres (6+1⁄2 feet) tall and form dense thickets in a variety of environments. Under the right conditions, it can scramble up into trees and can grow to 6 m (20 ft) tall.[13][14]

The leaves are broadly ovate, opposite, and simple and have a strong odour when crushed.[15]

L. camara has small tubular-shaped flowers, which each have four petals and are arranged in clusters in terminal areas stems. Flowers come in many different colours, including red, yellow, white, pink and orange, which differ depending on location in inflorescences, age, and maturity.[16] The flower has a tutti frutti smell with a peppery undertone. After pollination occurs, the colour of the flowers changes (typically from yellow to orangish, pinkish, or reddish); this is believed to be a signal to pollinators that the pre-change colour contains a reward as well as being sexually viable, thus increasing pollination efficiency.[17] In frost-free climates the plant can bloom all year round, especially when the soil is moist.[18]

There are five major flower colour varieties in Australia:[19]

  • Pink – Bud: pink; Middle ring: yellow opening with pale yellow petals; Outer ring: orange opening with pale or dark pink petals
  • White – Bud: cream coloured; Middle ring: yellow opening with light yellow petals; Outer ring: orange or yellow opening with lilac petals
  • Pink-edged Red – Bud: pink to reddish pink; Middle ring: orange opening with light yellow to orange petals; Outer ring: orange opening having two pink to red petals
  • Red – Bud: blood red; Middle ring: yellow opening with yellow petals; Outer ring: red throat having red petals
  • Orange – Bud: orange; Middle ring: yellow to orange opening, yellow petals; Outer ring: orange opening with orange petals
Lantana camara -fruits

The fruit is a berry-like drupe which turns from green to dark purple when mature. Green unripe fruits are inedible to humans and animals alike. Because of dense patches of hard spikes on their rind, ingestion of them can result in serious damage to the digestive tract. Both seed and vegetative reproduction occur. Up to 12,000 fruits can be produced by each plant.[20]

  • Trunk of an old, large specimen
    Trunk of an old, large specimen
  • Orange flowers on branch in Costa Rica
    Orange flowers on branch in Costa Rica
  • Orange-flowered specimen
    Orange-flowered specimen
  • Pink and yellow flowers
    Pink and yellow flowers
  • Pink and yellow specimen in a shrubland
    Pink and yellow specimen in a shrubland
  • Red-flowered specimen in France
    Red-flowered specimen in France
  • Pink-edged red flowers in Adana, Turkey
    Pink-edged red flowers in Adana, Turkey
  • White flowers
    White flowers
  • Yellow flowers
    Yellow flowers
  • Pink flowers
    Pink flowers
  • Ring of yellow flowers
    Ring of yellow flowers
  • Yellowish flowers are newly opened; magenta flowers are older and have been triggered by pollination to produce more anthocyanins
    Yellowish flowers are newly opened; magenta flowers are older and have been triggered by pollination to produce more anthocyanins
  • Ripe fruit
    Ripe fruit
  • Close-up of mature fruits
    Close-up of mature fruits

Taxonomy

Due to extensive selective breeding throughout the 17th and 18th centuries for use as an ornamental plant, there are now many different cultivars.[4]

Other common names include Cariaquillo (Boriken, Puerto Rico), Spanish flag, big-sage (Malaysia), Putush (West Bengal), Kongini (Kerala), wild-sage, red-sage, white-sage (Caribbean), korsu wiri or korsoe wiwiri (Suriname), tickberry (South Africa), Kashi Kothan (Maldives),[21] West Indian lantana,[22] umbelanterna, and Gu Phool in Assam, and Thirei in Manipur.

Etymology

The name Lantana derives from the Latin name of the wayfaring tree Viburnum lantana, the flowers of which closely resemble Lantana.[8][23]

Camara is derived from Greek, meaning 'arched', 'chambered', or 'vaulted'.[23]

Distribution and habitat

The native range of Lantana camara is Central and South America; however, it has become naturalised in around 60 tropical and sub-tropical countries worldwide.[24][25] It is found frequently in east and southern Africa, where it occurs at altitudes below 2,000 m (6,600 ft), and often invades previously disturbed areas such as logged forests and areas cleared for agriculture.[26]

Flowers of Lantana camara in West Bengal, India.

L. camara has also spread across the areas of Africa, Southern Europe, such as Spain and Portugal, and also the Middle East, India, tropical Asia, Australia, New Zealand, and the US, as well as many Atlantic, Pacific and Indian Ocean islands.[27][28] It has become a significant weed in Sri Lanka after escaping from the Royal Botanical Gardens in 1926.[29][30] Lantanas were brought to Australia as an ornamental garden plant in 1841, which spread and escaped domestic cultivation and became established in the wild within 20 years.[31] They were brought to India by the British around 200 years ago, which then spread and became invasive there as well.[32]

It was introduced into the Philippines from Hawaii as part of an exchange program between the United States and the Philippines; however, it managed to escape and has become naturalized in the islands.[33] It has also been introduced to the whole southern US, from California to North Carolina,[34] and is considered hardy in US Department of Agriculture zones 10 and 11.[35]

The range of L. camara is still increasing, shown by the fact that it has invaded many islands on which it was not present in 1974, including the Galapagos Islands, Saipan and the Solomon Islands.[28] There is also evidence that L. camara is still increasing its range in areas where it has been established for many years, such as East Africa, Australia and New Zealand.[7] The ability of L. camara to rapidly colonise areas of land which have been disturbed has allowed it to proliferate in countries where activities such as logging, clearance for agriculture and forest fires are common. In contrast, in countries with large areas of intact primary forest, the distribution of L. camara has been limited.[7][36]

Ecology

Birds and other animals eat the seeds, helping spread them over large distances.

A hedge in Sydney that averages a height of 6 m (19+1⁄2 ft)
A Lantana within the Sydney hedge that reaches 7 m (23 ft)

Habitat

The species is found in a variety of environments, including:

L. camara is rarely found in natural or semi-natural areas of forest, as it is unable to compete with taller trees due to its lack of tolerance for shade.[21] Instead it grows at the forest edge. L. camara can survive in a wide range of climatic conditions, including drought, different soil types, heat, humidity and salt. It is also relatively fire tolerant and can quickly establish itself in recently burnt areas of forest.[26][37]

As an invasive species

4.5 m (15 ft) tall shrubs infesting a native woodland area in Sydney

L. camara is considered to be a weed in large areas of the Paleotropics where it has established itself. In agricultural areas or secondary forests it can become the dominant understorey shrub, crowding out other native species and reducing biodiversity.[21] The formation of dense thickets of L. camara can significantly slow down the regeneration of forests by preventing the growth of new trees.[4]

In the US, L. camara is considered invasive in tropical areas such as Florida and Hawaii.[34]

Although L. camara is itself quite resistant to fire, it can change fire patterns in a forest ecosystem by altering the fuel load, causing a buildup of forest fuel, which itself increases the risk of fires spreading to the canopy.[38] This can be particularly destructive in dry, arid areas where fire can spread quickly and lead to the loss of large areas of natural ecosystem.

L. camara reduces the productivity in pasture through the formation of dense thickets, which reduce growth of crops as well as make harvesting more difficult. There are also secondary impacts, including the finding that in Africa, mosquitos which transmit malaria and tsetse flies shelter within the bushes of L. camara.[39]

Even though L. camara is considered invasive to the Western Ghats, the plant does not seem to impact biodiversity in the region; rather it tends to simply occupy the same moist regions as other species.[40]

There are many reasons why L. camara has been so successful as an invasive species; however, the primary factors which have allowed it to establish itself are:

  1. Wide dispersal range made possible by birds and other animals that eat its drupes
  2. Less prone to being eaten by animals due to toxicity
  3. Tolerance of a wide range of environmental conditions[21]
  4. Increase in logging and habitat modification, which has been beneficial to L. camara as it prefers disturbed habitats
  5. Production of toxic chemicals which inhibit competing plant species
  6. Extremely high seed production (12,000 seeds from each plant per year)[41]

Management and control

Effective management of invasive L. camara in the long term will require a reduction in activities that create degraded habitats. Maintaining functioning (healthy) ecosystems is key to preventing invasive species from establishing themselves and out-competing native fauna and flora.

Biological

Insects and other biocontrol agents have been implemented with varying degrees of success in an attempt to control L. camara. It was the first weed ever subjected to biological control; however, none of the programs have been successful despite 36 control agents being used across 33 regions.[42]

The lack of success using biological control in this case is most likely due to the many hybrid forms of L. camara, as well as its large genetic diversity which makes it difficult for the control agents to target all plants effectively. A recent study in India has shown some results around biological control of this plant using tingid bugs.[43]

Mechanical

Mechanical control of L. camara involves physically removing the plants. Physical removal can be effective but is labour-intensive and expensive,[21] therefore removal is usually only appropriate in small areas or at the early stages of an infestation. Another method of mechanical control is to use fire treatment, followed by revegetation with native species.

Chemical

Using herbicides to manage L. camara is very effective but also expensive, prohibiting its use in many poorer countries where L. camara is well established. The most effective way of chemically treating plant species is to first mow the area, then spray the area with a weed-killer, although this may have serious environmental consequences.[citation needed]

Toxicity

Lantana camara is known to be toxic to livestock such as cattle, sheep, horses, dogs and goats.[44][45] The active substances causing toxicity in grazing animals are pentacyclic triterpenoids, which result in liver damage and photosensitivity.[46] L. camara also excretes allelopathic chemicals, which reduce the growth of surrounding plants by inhibiting germination and root elongation.[47]

The toxicity of L. camara to humans is undetermined, with several studies suggesting that ingesting berries can be toxic to humans, such as a study by O. P. Sharma which states "Green unripe fruits of the plant are toxic to humans".[48] North Carolina State University's Extension Gardener website states that ingestion of the flowers, fruits, and leaves can cause vomiting, diarrhea, difficulty breathing, and liver failure, while the leaves can cause contact dermatitis.[49] A field guide by the US Department of the Army says the plant can even be fatal.[50] Contrarily, some studies have claimed that the species poses no risk to humans when eaten, and is in fact edible when ripe.[51][52]

Uses

Lantana camara stalks have been used in the construction of furniture, such as chairs and tables;[53] however, the main uses have historically been medicinal and ornamental.

Medicinal value

Studies conducted in India have found that Lantana leaves can display antimicrobial, fungicidal and insecticidal properties.[4][54] L. camara has also been used in traditional herbal medicines for treating a variety of ailments, including cancer, skin itches, leprosy, chicken pox, measles, asthma and ulcers.[4]

L. camara extract has shown to reduce gastric ulcer development in rats.[55]

Ornamental

Lantana camara has been grown specifically for use as an ornamental plant since Dutch explorers first brought it to Europe from the New World.[4] Its ability to last for a relatively long time without water, and the fact that it does not have many pests or diseases which affect it, have contributed to it becoming a common ornamental plant. L. camara also attracts butterflies and birds and is frequently used in butterfly gardens.[5] As an ornamental, L. camara is often cultivated indoors, or in a conservatory, in cool climates, but can also thrive in a garden with sufficient shelter.[56]

As a host plant

Many butterfly species feed on the nectar of L. camara. Papilio homerus, the largest butterfly in the western hemisphere, is known to feed on the nectar of the flowers as an opportunistic flower feeder.[57] A jumping spider, Evarcha culicivora, has an association with L. camara. They consume the nectar for food and preferentially use these plants as a location for courtship.[58]

References

  1. ^ Munir A (1996). "A taxonomic review of Lantana camara L. and L. montevidensis (Spreng.) Briq. (Verbenaceae) in Australia". Journal of the Adelaide Botanic Gardens. 17: 1–27.
  2. ^ "NatureServe Explorer".
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  4. ^ a b c d e f "Global Invasive Species Database". issg.org.uk. Archived from the original on 2014-04-07. Retrieved 2014-03-22.
  5. ^ a b Floridata LC (2007). "Lantana camara". Floridata LC. Retrieved March 24, 2014.
  6. ^ Moyhill Publishing (2007). "English vs. Latin Names". Moyhill Publishing. Retrieved March 24, 2014.
  7. ^ a b c Day, M. D. (December 24, 2003). Lantana: current management status and future prospects. Australian Centre for International Agricultural Research. ISBN 978-1863203753. Retrieved March 24, 2014.
  8. ^ a b c Ghisalberti, E.L. (2000). "Lantana camara L. (Verbenaceae)". Fitoterapia. 71 (5): 467–486. doi:10.1016/S0367-326X(00)00202-1. PMID 11449493.
  9. ^ Sharma, OM.P.; Harinder, Paul S (1988). "A review of the noxious plant Lantana camara". Toxicon. 26 (11): 975–987. doi:10.1016/0041-0101(88)90196-1. PMID 3072688.
  10. ^ https://www.researchgate.net/publication/359521898_IMPACT_OF_Lantana_camara_ON_NATIVE_VEGETATION_STRUCTURE_AND_DIVERSITY_OF_KAKIIKA_MBARARA_UGANDA
  11. ^ Kohli, Ravinder. K. (2006). "Status, invasiveness and environmental threats of three tropical American invasive weeds (Parthenium hysterophorus L., Ageratum conyzoides L., Lantana camara L.) in India". Biological Invasions. 8 (7): 1501–1510. doi:10.1007/s10530-005-5842-1. S2CID 23302783.
  12. ^ Ensbey, Rob. "Lantana - Weed of National Significance".
  13. ^ Lantana camara L. WEEDS AUSTRALIA - PROFILES. Centre for Invasive Species Solutions.
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  19. ^ Identification Guide: Lantana flowers Lantana – A Weed of National Significance (www.nrm.qld.gov.au). Retrieved 24 December 2021.
  20. ^ "Lantana camara". 2008.
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  22. ^ "Lantana camara". Plants Rescue. Retrieved 20 July 2018.
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  34. ^ a b "Plants Profile for Lantana camara (lantana)". plants.usda.gov. Retrieved 2021-03-09.
  35. ^ "Lantana camara". Missouri Botanical Garden Plant Finder. Retrieved March 9, 2021.{{cite web}}: CS1 maint: url-status (link)
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  39. ^ Okoth J. O. (1987). "A study of the resting sites of Glossina fuscipes fuscipes (Newstead) in relation to Lantana camara thickets and coffee and banana plantations in the sleeping sickness epidemic focus, Busoga, Uganda". Uganda Trypanosomiasis Research Organization. 8: 57–60. doi:10.1017/S1742758400006962. S2CID 87065966.
  40. ^ "Effect of weeds Lantana camara and Chromelina odorata growth on the species diversity, regeneration and stem density of tree and shrub layer in BRT sanctuary" (PDF).
  41. ^ "Weed Management Guide - Lantana" (PDF). Retrieved March 24, 2014.
  42. ^ "Management Information". Global Invasive Species Database. Retrieved March 24, 2014.
  43. ^ "Karnataka gets nature's gift to fight deadly weed - Times of India". The Times of India. Retrieved 2017-08-21.
  44. ^ Ross, Ivan. A. (1999). Medicinal plants of the world (PDF). Humana Press. p. 187.
  45. ^ Burns, D. (2001). Storey's Horse-Lover's Encyclopedia: an English & Western A-to-Z Guide. Storey Publishing. p. 302. ISBN 978-1-58017-317-9.
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  47. ^ Ahmed. R (2007). "Allelopathic effects of Lantana camara on germination and growth behavior of some agricultural crops in Bangladesh". Journal of Forestry Research. 18 (4): 201–304. doi:10.1007/s11676-007-0060-6. S2CID 61760.
  48. ^ Sharma O. P. (2007). "A review of the hepatotoxic plant Lantana camara". Critical Reviews in Toxicology. 37 (4): 313–352. doi:10.1080/10408440601177863. PMID 17453937. S2CID 23993698.
  49. ^ "Lantana camara (Common Lantana, Lantana, Red Sage, Shrub Verbena, Yellow Sage) | North Carolina Extension Gardener Plant Toolbox". plants.ces.ncsu.edu. Retrieved 2021-03-09.
  50. ^ The Complete Guide to Edible Wild Plants. United States Department of the Army. New York: Skyhorse Publishing. 2009. p. 131. ISBN 978-1-60239-692-0. OCLC 277203364.{{cite book}}: CS1 maint: others (link)
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  52. ^ "Ingestion of Lantana camara is not associated with significant effects in children". Pediatrics. 126 (6): e1585–8. December 2010. doi:10.1542/peds.2010-1669. PMID 21041281. S2CID 36904122. {{cite journal}}: Unknown parameter |authors= ignored (help)
  53. ^ Khanna, L. S.; Prakash, R. (1983). Theory and Practice of silvicultural Systems. International Book Distributions.
  54. ^ Chavan and Nikam (1982). "Investigation of Lantana camara Linn (Verbenaceae) leaves for larvicidal activity". {{cite journal}}: Cite journal requires |journal= (help)
  55. ^ Sathish, R.; et al. (March 2011). "Antiulcerogenic activity of Lantana camara leaves on gastric and duodenal ulcers in experimental rats". J Ethnopharmacol. 134 (1): 195–7. doi:10.1016/j.jep.2010.11.049. PMID 21129476.
  56. ^ "Lantana". BBC Plant Finder.
  57. ^ Lehnert, Matthew S.; Kramer, Valerie R.; Rawlins, John E.; Verdecia, Vanessa; Daniels, Jaret C. (2017-07-10). "Jamaica's Critically Endangered Butterfly: A Review of the Biology and Conservation Status of the Homerus Swallowtail (Papilio (Pterourus) homerus Fabricius)". Insects. 8 (3): 68. doi:10.3390/insects8030068. PMC 5620688. PMID 28698508.
  58. ^ Cross, Fiona R., and Robert R. Jackson. "Odour‐mediated response to plants by evarcha culicivora, a blood‐feeding jumping spider from East Africa." New Zealand Journal of Zoology 36.2 (2009): 75-80.
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