... Acacia at an avenue in Shimla

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Dinesh Valke

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Jan 31, 2010, 3:08:08 AM1/31/10
to efloraofindia
Dear friends,
 
Only one photo to show ... thus making it botanically challenging ... need not be resurfaced in future.
Yet friends familiar with Shimla flora may help me out with ID.
 
 
Date/Time : May 31, 2008 at 6.28am IST
Location Place : Shimla, NH 22 near Mall Road ... Altitude : about 2200 m ... GPS : about 31° 5'52.49" N, 77° 10'36.99" E
Habitat : Avenue Tree ... Type : :(
Plant Habit : Small Tree ... Height : about 10 - 12 ft... Length : :(
Leaves Type : double compound... Shape : :( ... Size : :(
Inflorescence Type : :( ... Size : :(
Flowers Size : 12 - 15 mm ... Colour : off-white ... Calyx : :( ... Bracts : :(
Fruits Type : :( ... Shape : :( ... Size : :( ... Seeds : :(

Other Info :
Fragrance : :( ...  Pollinator : :( ...  Uses : :(
 
 
 
Regards.
2558834674_3f4f05773e_b.jpg

Gurcharan Singh

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Mar 1, 2010, 10:20:42 PM3/1/10
to efloraofindia, Dinesh Valke, Tabish
Resurfacing again for ID


-- 
Dr. Gurcharan Singh
Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297  Mob: 9810359089
http://people.du.ac.in/~singhg45/ 


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2558834674_3f4f05773e_b.jpg

tanay bose

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Mar 1, 2010, 10:57:42 PM3/1/10
to Gurcharan Singh, efloraofindia, Dinesh Valke, Tabish
THE PLANT THAT HAS BEEN REQUESTED FOR ID IS
 

Mimosa bimucronata (DC.) Kuntz.

[Family MIMOSACEAE]

Synonym :

= Acacia bimucronata DC. [family MIMOSACEAE]

= Mimosa stuhlmannii Harms [family MIMOSACEAE]

Description:

Shrub or small tree up to 10 m. high; stems varying from densely pubescent or puberulous to almost glabrous, and also ± sparsely armed with scattered straight or slightly recurved prickles 2-10 mm. long. Leaves unarmed, petiole 0·3-1·7 cm. long; rhachis 1·3-9·5 cm. long, with 3-9 pairs of pinnae; leaflets 10-30 pairs (the lowest pair very reduced, ± equal, subulate), 4-12 x 0·8-2·6 mm., linear-oblong, venation basal and pinnate, prominent beneath; margins ± ciliate, not setulose. Flowers whitish, in subglobose pedunculate heads 0·7-1·7 cm. in diam., clustered 1-4 together along the leafless branches of a terminal panicle; clusters leafless or with pinnate bracts up to c. 3 mm. long. Calyx 0·3-0·5 mm. long. Corolla c. 1·5-2·5 mm. long. Stamens 8(10). Pods brown, 2-6 x 0·5-0·7 cm., without bristles or prickles, glabrous or almost so, breaking up transversely into segments c. 5-7 mm. long, the margins persisting as an empty frame.

Taxon Range
Native of South America
Habitat
Introduced
 
 
Regards,
 
Tanay,
--
Tanay Bose
+91(033) 25550676 (Resi)
9830439691(Mobile)
9674221362 (Mobile)

Kenneth Greby

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Mar 1, 2010, 11:20:26 PM3/1/10
to Gurcharan Singh, efloraofindia, Dinesh Valke, Tabish

Gurcharan Singh

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Mar 2, 2010, 12:19:09 AM3/2/10
to Kenneth Greby, efloraofindia, Dinesh Valke, Tabish
We have reached an interesting stage in this identification. Acacia bimucronata is now correctly known as Mimosa bimucronata (Candolle) O. Kuntze as it has less than 10 (usually 8) stamens whereas Acacia mearnsii has numerous stamens. I request colleagues to try and decifer  the number of stamens. I would personally go with Acacia mearnsii.


-- 
Dr. Gurcharan Singh
Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297  Mob: 9810359089
http://people.du.ac.in/~singhg45/ 

Kenneth Greby

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Mar 2, 2010, 12:50:31 AM3/2/10
to Gurcharan Singh, efloraofindia, Dinesh Valke, Tabish
For what it's worth, A. mearnsii is a species that thrives in Mediterranean climates, such as California, USA but not in warm-humid subtropical climates nor deserts.

Sorry that I'm not familiar with the local climate of Shimla, but possibly this information may be helpful in determing ID.

I can't add any info on Mimosa bimucronata.

Regards--
Ken Greby.


From: Gurcharan Singh <sing...@gmail.com>
To: Kenneth Greby <fst...@yahoo.com>
Cc: efloraofindia <indian...@googlegroups.com>; Dinesh Valke <dinesh...@gmail.com>; Tabish <tab...@gmail.com>
Sent: Mon, March 1, 2010 9:19:09 PM
Subject: Re: Fwd: [efloraofindia:28515] ... Acacia at an avenue in Shimla

Gurcharan Singh

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Mar 2, 2010, 1:28:01 AM3/2/10
to Kenneth Greby, efloraofindia, Dinesh Valke, Tabish
Dear Kenneth
Simla is a hill station in NW Himalayas (a touch of submediterranean temperate climate), with altitude around 7000 ft above sea level, with some peaks in the area climbing to 12000 feet or so.


-- 
Dr. Gurcharan Singh
Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297  Mob: 9810359089
http://people.du.ac.in/~singhg45/ 

Dinesh Valke

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Mar 2, 2010, 1:51:03 AM3/2/10
to Gurcharan Singh, Kenneth Greby, efloraofindia, Tabish
... attaching a cropped version of the original-sized photo; may help in getting closer to flowers and leaves.
Regards.
2558834674_9308727249_cropped.jpg

Dinesh Valke

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Mar 2, 2010, 1:54:53 AM3/2/10
to Gurcharan Singh, Kenneth Greby, efloraofindia, Tabish
... and noting Kenneth ji's point --- from the extent seen in the original photo, this large shrub looks unarmed.
Regards.

Kenneth Greby

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Mar 2, 2010, 2:34:48 AM3/2/10
to Dinesh Valke, Gurcharan Singh, efloraofindia, Tabish
The number of pairs of leaflets shown on the specimen (approx. 32 ppp) is consistent with A. mearnsii:

http://www.aluka.org/action/showMetadata?doi=10.5555/AL.AP.FLORA.FTEA000711&pgs=&cookieSet=1

It seems to be of a weedy nature in many countries (indicating it's been cultivated widely, even if it is not an escape problem locally), and grows into Tasmania, an area of temperate climates consistent with Simla/Shimla.

http://www.hear.org/gcw/species/acacia_mearnsii/

Regards--
Ken Greby.


From: Dinesh Valke <dinesh...@gmail.com>
To: Gurcharan Singh <sing...@gmail.com>
Cc: Kenneth Greby <fst...@yahoo.com>; efloraofindia <indian...@googlegroups.com>; Tabish <tab...@gmail.com>
Sent: Mon, March 1, 2010 10:54:53 PM
Subject: Re: Fwd: [efloraofindia:28525] ... Acacia at an avenue in Shimla

... and noting Kenneth ji's point --- from the extent seen in the original photo, this large shrub looks unarmed.
Regards.



On Tue, Mar 2, 2010 at 12:21 PM, Dinesh Valke <dinesh...@gmail.com> wrote:
... attaching a cropped version of the original-sized photo; may help in getting closer to flowers and leaves.
Regards.
On Tue, Mar 2, 2010 at 11:58 AM, Gurcharan Singh <sing...@gmail.com> wrote:
Dear Kenneth
Simla is a hill station in NW Himalayas (a touch of submediterranean temperate climate), with altitude around 7000 ft above sea level, with some peaks in the area climbing to 12000 feet or so.

-- 
Dr. Gurcharan Singh
Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297  Mob: 9810359089

Kenneth Greby

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Mar 2, 2010, 2:39:50 AM3/2/10
to Kenneth Greby, Dinesh Valke, Gurcharan Singh, efloraofindia, Tabish
http://www.hear.org/Pier/imagepages/thumbnails/acacia_mearnsii.htm
http://www.hear.org/Pier/species/acacia_mearnsii.htm

A few additional photos and information here.

Regards--
Ken,


From: Kenneth Greby <fst...@yahoo.com>
To: Dinesh Valke <dinesh...@gmail.com>; Gurcharan Singh <sing...@gmail.com>
Cc: efloraofindia <indian...@googlegroups.com>; Tabish <tab...@gmail.com>
Sent: Mon, March 1, 2010 11:34:48 PM
Subject: Re: Fwd: [efloraofindia:28527] ... Acacia at an avenue in Shimla

Gurcharan Singh

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Mar 2, 2010, 2:45:28 AM3/2/10
to Kenneth Greby, Dinesh Valke, efloraofindia, Tabish
Dinesh ji
Your cropped picture does bring out Acacia and not Momosa flowers.
A. mearnsii seems to be likely identification


-- 
Dr. Gurcharan Singh
Retired  Associate Professor
SGTB Khalsa College, University of Delhi, Delhi-110007
Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018.
Phone: 011-25518297  Mob: 9810359089
http://people.du.ac.in/~singhg45/ 

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