Vachellia farnesiana, also known as Acacia farnesiana, and previously Mimosa farnesiana, commonly known as sweet acacia,[12] huisache,[13] or needle bush, is a species of shrub or small tree in the legume family, Fabaceae. Its flowers are used in the perfume industry.

Description
The plant is deciduous over part of its range,[14] but evergreen in most locales.[15] Growing from multiple trunks, it reaches a height of 4.6–9.1 metres (15–30 feet).[13] The bark is whitish gray.[16] The base of each leaf is accompanied by a pair of thorns on the branch.[17] The dark brown fruit is a seed pod.[16]

Taxonomy
Taxonomic history
It was first described by Europeans under the name Acacia Indica Farnesiana in 1625 by Tobias Aldini from plants grown in Rome in the Farnese Gardens from seed collected in Santo Domingo, in what is now the Dominican Republic, which germinated in 1611. Aldini included an illustration of the plant, which he contrasted with an illustration of the first known Acacia; Acacia nilotica. This first (European) illustration of the plant was later designated as the (lecto-)type.[18][19] In 1753, Carl Linnaeus used Aldini's work as basis for his taxon Mimosa farnesiana. In 1806 Carl Ludwig Willdenow moved this taxon to the genus Acacia.[1]

Partly due to its wide distributional range, the taxon has attracted many synonyms. Especially in the United States, the taxonomy has been confused.

In 1809, Willdenow described Acacia acicularis from Central America collected and named during Humboldt and Bonpland's scientific expedition to the Americas.[5] Acacia ferox was described in 1843 in Belgium from collections in Mexico.[7] Acacia lenticellata was described in 1859 for the plants found growing throughout Australia.[8]

In the Prodromus Florae Peninsulae Indiae Orientalis of 1834, Wight & Arnott, attempted to split the burgeoning genus Acacia by moving a number of the Acacia species growing in India to the new genus Vachellia.

This was not widely followed, nonetheless in 1933, Small verified Alexander's name Vachellia densiflora for plants growing in Louisiana, and awarded V. peninsularis and V. insularis to different populations of the plants growing in Florida.[4]

In 1936, Cory moved Vachellia densiflora to Acacia densiflora, but as this name had already been used for another taxon, and was therefore invalidated sensu Cory, in 1969, this taxon was renamed A. smallii by Isely. In 1948, F. J. Herm. synonymised Vachellia peninsularis and V. insularis under Acacia pinetorum.[4][12]

In 1933, M. E. Jones named plants he collected in Mexico Pithecellobium minutum. This taxon was moved to Acacia minuta by R. Mitchel Beauchamp in 1980. Beauchamp also subsumed A. smallii under A. minuta subsp. densiflora, although this was not widely followed.

Acacia smallii was used in the U.S. for the 'native' A. farnesiana growing in the drylands west of Louisiana, but at the same time, the taxon A. farnesiana was recognised in the U.S. for purportedly imported non-native plants originally cultivated in the Southeastern U.S. as ornamentals and later thought naturalised there. Additionally, in Florida, A. pinetorum was recognised as a rare endemic native.[12]

A paper in 1989 by H. D. Clarke, D. S. Seigler and J. E. Ebinger finally cleared up some of this confusion, synonymising Acacia smallii and a number of other taxa under the nominate form of A. farnesiana, under which they also included all of the plants growing outside of the Americas. In the same paper, they recognised A. farnesiana var. guanacastensis from herbarium collections made by D. H. Janzen in 1976 in Guanacaste, Costa Rica.[2][3] This taxon was later elevated to species status as A. guanacastensis by the same three in 2000[20] and later moved to Vachellia guanacastensis by Seigler and Ebinger in 2006.[21]

Acacia pinetorum was subsumed under A. farnesiana as A. farnesiana subsp. pinetorum in 2002 by Clarke, Seigler and Ebinger (rendering the nominate form A. farnesiana subsp. farnesiana).[6] Seigler and Ebinger later reclassified this as Vachellia farnesiana var. pinetorum in 2005


Herbal & The plant
ಈ ಸಸ್ಯದ ಬಗ್ಗೆ ಹೆಚ್ಚಿನ ಮಾಹಿತಿ ಇರುವವರು ಕಾಮೆಂಟ್ ಮಾಡಿ ತಿಳಿಸಿಕೊಡಬೇಕಾಗಿ ವಿನಂತಿ.
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