Acacia macracantha Humb. & Bonpl. ex Willd. Search in The Plant List Search in IPNI Search in Australian Plant Name Index Search in NYBG Virtual Herbarium. Acacia macracantha is a species of plants with 0 observations. Image of Acacia macracantha. Acacia macracantha Trusted. Creative Commons Attribution Non Commercial Share Alike (CC BY-NC-SA © Smithsonian.

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It is considered to be It has escaped from cultivation and can be found naturalized in disturbed sites, coastal areas and drylands, where it often grows as a weed forming dense thickets. It is listed as invasive in Cuba and Chile. Acacia species sensu lato naturally occur in Australia, Asia, Africa and the Americas. A reclassification of the genus Acacia was proposed in and accepted inafter a long and complex debate.

In macracanta new classification, the genus was split into five separate genera and now the generic name Acacia is reserved for those species native to Australia about specieswhile the African, Asian and American species are now grouped into the genera VachelliaSenegaliaAcaciella and Mariosousa Orchard and Maslin, ; Maslin,Thiele et al. Throughout its geographic range, V. This taxon is acaca highly variable in the type and degree of pubescence on vegetative parts of the plant, ranging from glabrous to puberulent in most of Mexico and northern South America, densely pubescent in the Caribbean Islands, to densely lanate throughout much of Chile, Ecuador and Peru.

Also, leaf and leaflet size vary extensively Isely, ; Seigler and Ebinger, ; ; Ebinger et al. Small tree, the branchlets armed with small to large, solid, paired stipular spines, in youth pubescent to subglabrous, later subglabrous and prominently lenticellate.

Acacia macracantha

Leaves moderately large, bipinnate, the pinnae pairs opposite on the rachis, many leaflets. Petiole about 1 cm long, pubescent, canaliculate above, bearing a longitudinally extended, crateriform gland slightly above the middle; rachis similar, gland-bearing only at terminal 1 to few rachial nodes; pinnae cm long; leaflets linear or linear-oblong, mostly about 3 mm long and scarcely 1 mm wide, rounded or obtuse apically, obliquely rounded to subtruncate basally, glabrous or lightly pubescent, only the costa prominent; stipules modified as spines.

Inflorescence of axillary, pedunculate heads, solitary or few-fasciculate; peduncles about 1 cm long; head orbicular, dense, less than 1 cm in diameter; floral bracts linear- spatulate, about 1 mm long. Flowers small; calyx funnelform, about 1 mm long, tomentulose apically; corolla tubular-funnelform, about 2 mm long, glabrous except on the prominent lobes; stamens free, about 3 mm long.


Legume variable, lineal, reported up macracanntha 10 cm long and 12 mm wide, straight or somewhat curved, usually puberulent and glandular. The native distribution acacka of V.

Vachellia macracantha – Wikispecies

It has been introduced into a range of different countries see distribution table and is considered invasive in Cuba and Chile. The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status.

Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. The risk of new introductions and invasion by this species appears to be high, mostly in areas where domestic livestock particularly cattle is present and can disperse seeds.

Peccaries are also potential seed dispersers across the landscape and into different habitats Beck, There are several reports showing that V. It has been also suggested that V. Flowers are visited and pollinated by bees Apidae: Nannotrigona testaceicorniswasps Chalcidae: Ruiz-Zapata and Kalin-Arroyo, In Mexico and Central America the species has been recorded flowering and fruiting during the rainy season, from May to January Seigler and Ebinger, ; Missouri Botanical Garden, As many other species within the Fabaceae, V.

Seeds are dispersed by livestock that eat the pods and by human activity Casiva et al. Peccaries can also disperse seeds over long distances Beck, In South America, it is often used as an auxiliary plant in timber plantations Hanelt, In Mexico, its leaves and thorns are used in traditional medicine Seigler and Ebinger, ; Missouri Botanical Garden, It is also used as an ornamental and hedge plant Missouri Botanical Garden, ; Randall, The main difference between these two species is the length and shape of their thorny stipules.

No genetic differentiation has been detected between these species Casiva et al. However, herbicides containing 2,4-Dichlorophenoxyacetic acid and triclopyr have been recommended for the control of other Vachellia species that also behave as invaders Weber, Catalogue of the Seed Plants of the West Indies.

Smithsonian Contributions to Botany, Seed predation and dispersal by peccaries throughout the neotropics and its consequences: Plants of the Eastern Caribbean. University of the West Indies.

Vachellia macracantha

American Journal of Botany, 89 5 Mating system and population structure of Acacia aroma and A. American Journal of Botany, 91 1 A new species of ant-acacia Fabaceae from Mexico. The Southwestern Naturalist, 32, Ant-acacia hybrids of Mexico and Central America.

Southwestern Naturalist, 37 4 Systematic Botany, 25 4 Mansfeld’s Encyclopedia of agricultural and horticultural crops except ornamentalsBerlin, Germany: Inter-American Biodiversity Information Network.


International Legume Database and Information Service: World Database of Legumes version School of Plant Sciences, University of Reading. Leguminosae of the United States. Memoirs of the New York Botanical Garden25 1. Swollen-thorn Acacias of Central America. Smithsonian Contributions to BotanyNo. Generic and subgeneric names in Acacia following retypification of the genus. Muelleria, 26 1 Missouri Botanical Garden, The case for conserving Acacia with a new type. Taxon, 54 2 National list of invasive and potentially invasive plants in the Republic of Cuba – A global compendium of weeds, Ed.

Plant reproductive ecology of a secondary deciduous tropical forest in Venezuela.

Mimosoideae species complexes in Mexico. Systematic Botany, 1, New combinations in the genus Vachellia Fabaceae: Mimosoideae from the New World. Annals of the Missouri Botanical Garden, 82 1 The controversy over the retypification of Acacia Mill. Taxon, 60 1 National Germplasm Resources Laboratory. National Plant Data Center. A new genus and species of Gracillariidae Lepidoptera feeding on flowers of Acacia macracantha Willd. Acta Entomologica Chilena, 29 1macraczntha Survey of anthophagous lepidopteran larvae associated with Aacacia macracantha Willd.

Fabaceae in northern Chile. Fabaceae en el norte de Chile. Revista Brasileira de Entomologia, 53 2 Invasive plant species of the world: One or more of the features that are needed to show you the maps functionality are not available wcacia the web browser that you are using. More information about modern web browsers can be found at http: Datasheet Vachellia macracantha porknut. There are no pictures available for this datasheet If you can supply pictures for this datasheet please contact: Don’t need the entire report?

Acacia macracantha – Leguminosae: Neotropical plant images from Kew

Generate a print friendly version containing only the sections you need. Britton Acacia macracantha Humb. Acacia macracanthoides Bertero ex DC.

Acacia pellacantha Meyen Vogel Acacia platyacantha Schltdl. Acacia subinermis Bertero ex DC. Killip Poponax macracanthoides Bertero ex DC.

International Common Names English: Taxonomic Tree Top of page Domain: Notes macraacantha Taxonomy and Nomenclature Top of page V. Description Top of page Small tree, the branchlets armed with small to large, solid, paired stipular spines, in youth pubescent to subglabrous, later subglabrous and prominently lenticellate. Distribution Top of page The native distribution range of V.