Acacia mearnsii (Cultivated)

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  • Acacia
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a-KAY-see-u,h or uh-KAY-shuh — from the Greek akis, meaning point, barb, thorny, spiny
MEARN-zee-eye — named for Edgar Mearns, 20th century American naturalist
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commonly known as: black wattle, tan wattle
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Native of: s-e Australia, Tasmania; cultivated elsewhere
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Medium sized tree with slightly angular stems; leaves gray-pubescent, bipinnate with 6-30 pairs of pinnae; leaflets 10-60 pairs usually shorter than 5 mm and less than 1 mm braod; flowers white in globose heads, 6-9 mm acoss, arranged in large terminal panicles; pod 5-10 cm long, slightly constricted between seeds.
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These trees are very common in Ooty (at 5000 ft) grown on commercial scale. The bark is used for tannin extraction (most valuable vegetable tannin for tanning hides and skins);
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Request for ID : 010111 : AK-2: Again at Nuwara Eliya, Sri Lanka which is at 1892 meters on the 18th
of Nov,2010. Is it some variety of Albizia?

Perhaps Leucaena leucocephala

it looks like Acacia meansii

Are the stems green in colour? This is not *Leucaena* sp.

look like Acacia mearnsii

Looks like black wattle: Acacia mearnsii. Need to check the bark and fruits before confirmation. These trees are very common in Ooty (at 5000 ft) grown on commercial scale. The bark is used for tannin extraction (most valuable vegetable tannin for tanning hides and skins). In fact the wattle extract company is located in Mettupalyam (near Coimbatore) on the foothills of Ooty

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Acacia mearnsii from Ranikhet and Almora pl. validate: Acacia mearnsii De Wildeman, Pl. Bequaert. 3: 62. 1925.
Medium sized tree with slightly angular stems; leaves gray-pubescent, bipinnate with 6-30 pairs of pinnae; leaflets 10-60 pairs usually shorter than 5 mm and less than 1 mm braod; flowers white in globose heads, 6-9 mm acoss, arranged in large terminal panicles; pod 5-10 cm long, slightly constricted between seeds.
Commonly planted along roadsides in Almora, Ranikhet and Chakauri in April
Please validate the identification.

… to me does look like Acacia mearnsii (my sightings at Shimla and Ooty)
Let us also wait for more validating comment(s).
Description (from PIER): “Unarmed, evergreen tree 5-10 (-15) m high; branchlets shallowly ridged; all parts finely hairy; growth tips golden-hairy. Leaves: Dark olive-green, finely hairy, bipinnate; leaflets short (1.5-4 mm) and crowded; raised glands occur at and between the junctions of pinnae pairs. Flowers: Pale yellow or cream, globular flowerheads in large, fragrant sprays. Fruits: Dark brown pods, finely hairy, usually markedly constricted” (Henderson, 1995; p. 55).

At the outset the set of photographs are very beautiful.
A.mearnsii is cultivated on large scale as a plantation crop in Ooty ( 5000 ft) for commercial purpose for extracting the tannins known as wattle extract (tanners’ gold) from the bark for tanning hides and skins. Wattle extracting factory is located on the foot hills of Ooty in Mettupalayam town. I have worked on the photochemical aspects of the bark/extract etc. long back. I am unable to locate the old printed photographs. At that time the digital photography was non- existent in India. The tree looks like one. Nevertheless,  …, our group member from Coimbatore may be able to throw more light on this species now.

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Request for ID : 100611 : AK-1: Taken at Kodaikanal, on the 23rd of Oct, 2008.
Medium trees at higher elevation.
Albizia sp?

I was told by a local person its name as Viscose Cidar. However, I could not correlate it with any botanical name.

The plant in the picture seems to be either Albizzia or Acacia……..not sure

Closest I can think is Acacia leucophloeia

This looks similar to Acacia mearnsii posted by … under ‘Mimosaceae Week’.
Since … has mentioned location as Ooty, and my pictures are taken at Kodaikanal, it could be similar.

This is Black Wattle; Acacia mearnsii

a-KAY-see-uh or uh-KAY-shuh — from the Greek akis, meaning point, barb, thorny, spiny
MEARN-zee-eye — named for Edgar Mearns, 20th century American naturalist

May 31, 2008 … at Shimla
commonly known as: black wattle, tan wattle
Native of: s-e Australia, Tasmania; cultivated elsewhere
References: Flowers of India • Wikipedia • PIER • Mimosaceae in Australia • NPGS / GRIN
more views: Nov 16, 2011 … at Cairn Hill Forest, Ooty

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Taken at Kodaikanal, on the 23rd of Oct, 2008.
Medium trees at higher elevation.
Albizia sp?

The tree is Acacia mearnsii, the black wattle (Tanner’s gold). In Ooty the most common Acacia sps.
There are plantations of this species and wattle extract is manufactured from the bark in the factory located at Mettupalyam at the foothills of Ooty. The wattle extract is used in the tanning industry for tanning purpose (conversion of hides into leather) .

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Acacia For ID : Bhimtal,Uttarakhand : 120413 : AK-2 : Attachments (4). 3 posts by 2 authors.
An Acacia tree seen at a resort in Bhimtal on 23/3/13.
Could it be Acacia mearnsii ?
Kindly confirm.

i hope Acacia mearnsii

Acacia mearnsii (planted) :: Yercaud :: 25 JAN 18 : 4 posts by 3 authors. 7 images.
Yercaud … (literally, lake forest), Tamil Nadu
… near Shevaroy Temple … Date: January 25, 2018 … Altitude: about 1,623 m (5324 feet) asl
Acacia mearnsii De Wild. … (family: Fabaceae)  

Beautiful capture. I am knowing this plant.

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Acacia sp. for ID- Munnar-PKA48 : 4 posts by 3 authors. Attachments (7) – around 300 kb each.

This tree (Acacia sp) for seen dominating Top-Station region of Munnar.
Attaching few pics..
Pl. suggest ID..

Please check for Acacia mearnsii … this acacia seems to have been planted as an ornamental, in both – south and north hill stations of India. 

Thanks … It does looks like Acacia mearnsii..
image by Promila Chaturvedi

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Plant for ID-PC-07.10.2015 : 6 posts by 3 authors. Attachments (1)
please identify the plant here in picture from Uttarakhand.

Probably Acacia dealbata (Fabaceae).

Three species which have been introduced in India are quite confusing, with differences as below as per Lucid Central:
Silver wattle (Acacia dealbata subsp. dealbata) may be confused with several other native wattles (Acacia spp.) including black wattle (Acacia mearnsii), Sydney green wattle (Acacia decurrens), green wattle (Acacia irrorata), northern silver wattle (Acacia leucoclada), Bodalla silver wattle (Acacia silvestris), dwarf silver wattle (Acacia nanodealbata), Cootamundra wattle (Acacia baileyana) and Karri wattle (Acacia pentadenia). These species can be distinguished by the following differences:

  • silver wattle (Acacia dealbata subsp. dealbata) has young branches and foliage tips that are finely hairy and whitish-green or whitish-yellow in colour (i.e. pruinose). Its silvery-grey leaves have numerous (10-30) pairs of hairy branchlets (i.e. pinnae). These leaves are shortly stalked (i.e. petiolate) and there is usually a small raised structure (i.e. gland) near the top of this leaf stalk (i.e. petiole). There are also similar glands at the junction of the each of the pairs of branchlets (i.e. jugary glands). The leaflets are relatively small (1.5-6 mm long) and usually quite elongated in shape. Its flowers are yellow or golden yellow and borne in small globular clusters, which are arranged into larger elongated compound clusters (i.e. racemes or panicles). The pods are relatively large (20-115 mm long and 6-14 mm wide).
  • black wattle (Acacia mearnsii) has young branches and foliage tips that are finely hairy and yellow or greenish-yellow in colour (i.e. not pruinose). Its dark green leaves have numerous (7-31) pairs of hairy branchlets (i.e. pinnae). These leaves are shortly stalked (i.e. petiolate) and there is usually a small raised structure (i.e. gland) near the top of this leaf stalk (i.e. petiole). There are also similar glands at the junction of the each of the pairs of branchlets (i.e. jugary glands), and also between some or all pairs of branchlets (i.e. interjugary glands). The leaflets are quite small (1-3.5 mm long) and usually not particularly elongated in shape. Its flowers are pale yellow or cream-coloured and borne in small globular clusters, which are arranged into larger elongated compound clusters (i.e. racemes or panicles). The pods are relatively large (30-150 mm long and 4-8 mm wide).
  • Sydney green wattle (Acacia decurrens) has young branches with conspicuous flanges and foliage tips that are mostly hairless and yellowish in colour (i.e. not pruinose). Its dark green leaves have several to numerous (3-13) pairs of hairless branchlets (i.e. pinnae). These leaves are shortly stalked (i.e. petiolate) and there is usually a small raised structure (i.e. gland) near the top of this leaf stalk (i.e. petiole). There are also similar glands at the junction of the each of the pairs of branchlets (i.e. jugary glands). The leaflets are quite large (5-15 mm long) and very narrow. Its flowers are yellow or golden yellow and borne in small globular clusters, which are arranged into larger elongated compound clusters (i.e. racemes or panicles). The pods are relatively large (20-105 mm long and 4-9 mm wide).

Going by the above keys and links, I think it may be Acacia mearnsii

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Acacia (Wattle) for identification 180811MK01:

Please help me to identify this tree. The characteristic feature of this is the green stem (IMG_3572). Height of the tree was about 3-4 metres.
Is this Black Wattle (Acacia mearnsii)? according to the following discussions.,
Date: 25 Jan 2011
Place: Ooty, Nilgiris, TN
Habitat: Garden

Sorry for the mix-up. IMG_3573-75 are not the parts of plant posted.

Please check for the following characters for A.decurrens:
Bark smooth to deeply fissured, brown or dark grey to blackish;
branchlets angled with winged ridges which are decurrent with the petioles, glabrous or sparsely hairy with minute appressed hairs.
If the characters are not compatible, it could be A.mearnsii only.
In Ooty both the species A.mearnsii and A.decurrence are available.
A.mearnsii is cultivated on commercial scale for the preparation of the wattle extract , which is called the tanner’s gold.
Infact, I collected the barks of both the species/ specimen for phytochemical studies and preparation of tannin extracts, long back . Unable to trace out the taxonomical details of the species from my records.
Leaves with petiole 0.7–2.8 cm long, 1 gland at base of or to c. 7 mm below lowest pair of pinnae

Acacia mearnsii as per images and details herein.

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SK 3053 17 October 2021: 3 very high res. images.
Location: Palpa, Nepal
Altitude: 1100m.
Date: 02 September 2021
Habit : Cultivated
Vietnamese Bean ???

What exactly do you mean by Vietnamese Bean ?

The owner said it is may be called Vietnamese Bean !

No match at all on google search.

I also tried but no luck !

Pl. check Acacia mearnsii De Wild.

Thank you …

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Acacia for ID from Almora-GS13032022-1: 8 very high res. images.
Please help with the ID of Acacia sp. clicked from Almora, 7-2-2006

There are a lot of Acacias… I can see yours has nectaries all along the leaf rachis. If it’s a frequent non-native perhaps someone will recognise it otherwise a quick search of relevant plant sales websites for what Acacias are getting sold and planted might be illuminating in terms of candidates to look at, as perhaps only a narrow range will actually being traded. Otherwise you’d need to submit them to an Acacia group if there is one. At any rate, usually clearer photos of all aspects with ruler in the picture including mature fruits is advisable but I see your photos seem to be old ones.

It may be useful to say that the best website I’ve seen for Acacias is http://worldwidewattle.com/imagegallery where you can choose a species to get photos and illustrations and can click View Description at the side.
A problem though is that there are quite a few genera (non-Acacia) that look like Acacia, making finding it hard if it’s not a sufficiently well-known one. So let’s hope someone recognises it !

I think Acacia mearnsii De Wild. or Acacia dealbata Link

Pl. check.

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References: