This strengthens my view that catechu and polyacantha are one and the same
On Dec 26, 2015 12:26 AM, "tsp kumar" <[email protected]> wrote:

> Tapas ji, My observation over the years is that the spines or the thorns
> vanish with maturity...!
> regards
> tspkumar
>
> On Sat, Dec 26, 2015 at 12:09 AM, Tapas Chakrabarty <[email protected]>
> wrote:
>
>> Ushadi,
>> So far as I understand, the basic difference between Senegalia and
>> Vachellia is that in the former, there will be prickles scattered all over
>> the branchlets while the stipules are modified into spines in the latter.
>> Here, the spines that you mention in the link are the characters of
>> Senegalia.  Now coming back to the differences between S. catechu (formerly
>> Acacia catechu) and S. polyacantha (formerly Acacia polyacantha), in my
>> opinion, there is none but as per some sources, the main trunk should
>> contain spines in case of polyacantha and this character of difference can
>> be established and elucidated only through field observations on greater
>> areas of distribution of the plants involved.
>> Regards,
>>
>>
>> On Fri, Dec 25, 2015 at 10:48 AM, tsp kumar <[email protected]> wrote:
>>
>>> Ushaji,I will try to re-visit the next time I go there and get back to
>>> you.
>>> thanks and regards
>>> tspkumar
>>>
>>> On Fri, Dec 25, 2015 at 10:43 AM, Ushadi Micromini <
>>> [email protected]> wrote:
>>>
>>>> look at thorn in the link i gave and gargji gave a while back (same
>>>> page)
>>>> the thorn is unmistakable
>>>> not nubs
>>>> real thorns
>>>>
>>>>
>>>> so if you happen to be in the same part of the forest may be we get to
>>>> see the thorns?
>>>>
>>>> thanks
>>>> usha di
>>>>
>>>> On Fri, Dec 25, 2015 at 10:39 AM, tsp kumar <[email protected]>
>>>> wrote:
>>>>
>>>>> Thanks Ushaji for the feed back.Unfortunately I do not have pictures
>>>>> other than the ones that I have uploaded.By the way,Burr -like thorns are
>>>>> visible in image no 2.Would this help...?
>>>>> regards
>>>>>
>>>>> On Fri, Dec 25, 2015 at 10:14 AM, Ushadi Micromini <
>>>>> [email protected]> wrote:
>>>>>
>>>>>> interesting study by Tapasda
>>>>>>
>>>>>> in the first picture upon enlarging there is a thorn i think ... in
>>>>>> the branch that's rising diagonally in the bottom of the picture and is
>>>>>> ending with a couple of inflorescence a small red tipped thorn seems to 
>>>>>> be
>>>>>> present
>>>>>> *TSP do you have pictures of the thorns?*
>>>>>>
>>>>>> since Senegalia polycantha 's colloquial names include claw thorn.
>>>>>> <https://sites.google.com/site/efloraofindia/species/a---l/f/fabaceae/senegalia/acacia-polyacantha>
>>>>>>
>>>>>>
>>>>>> usha di
>>>>>>
>>>>>> On Wed, Dec 23, 2015 at 3:12 PM, Tapas Chakrabarty <
>>>>>> [email protected]> wrote:
>>>>>>
>>>>>>> I am going through these images again and again and comparing them
>>>>>>> with the existing literature and data available to me.  Once again, I am
>>>>>>> unable to distinguishing Acacia polyacantha with Acacia catechu.  The
>>>>>>> cracks and fissures on the stem are usual in the latter and therefore I
>>>>>>> think it should be called Senegalia catechu, with S. polyacantha as its
>>>>>>> synonym.
>>>>>>> Tapas.
>>>>>>>
>>>>>>> On Mon, Dec 21, 2015 at 1:01 PM, Tapas Chakrabarty <
>>>>>>> [email protected]> wrote:
>>>>>>>
>>>>>>>> Yesterday I observed that this might be Senegalia catechu.  After
>>>>>>>> further search through literature, I find that the plants with armed 
>>>>>>>> stem
>>>>>>>> may be regarded as a variant, or a distict species, on this character 
>>>>>>>> and
>>>>>>>> the available name for this entity is Senegalia polycantha, which is,
>>>>>>>> howerver, otherwise indistinguishable from S. catechu.  This matter 
>>>>>>>> can be
>>>>>>>> settled only by careful field studies of populations by some young and
>>>>>>>> energetic person.
>>>>>>>> Regards,
>>>>>>>>
>>>>>>>> On Sun, Dec 20, 2015 at 10:15 PM, Muthu Karthick <[email protected]
>>>>>>>> > wrote:
>>>>>>>>
>>>>>>>>> *Acacia chundra* of Mimosaceae?
>>>>>>>>>
>>>>>>>>> On Sun, Dec 20, 2015 at 7:09 PM, J.M. Garg <[email protected]>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Forwarding again for Id confirmation or otherwise please.
>>>>>>>>>>
>>>>>>>>>> Some earlier relevant feedback:
>>>>>>>>>>
>>>>>>>>>> efi page on Senegalia polyacantha
>>>>>>>>>> <https://sites.google.com/site/efloraofindia/species/a---l/f/fabaceae/senegalia/acacia-polyacantha>
>>>>>>>>>>  with
>>>>>>>>>> images
>>>>>>>>>>
>>>>>>>>>> ---------- Forwarded message ----------
>>>>>>>>>> From: tsp kumar <[email protected]>
>>>>>>>>>> Date: 12 December 2015 at 23:51
>>>>>>>>>> Subject: [efloraofindia:237149] ID-TSP-12DEC2015-1: Fabaceae
>>>>>>>>>> specimen for ID
>>>>>>>>>> To: efloraofindia <[email protected]>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Dear friends,
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Kindly identify this specimen belonging to Fabaceae. Could this
>>>>>>>>>> be Senegalia polycantha...???
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Ref:
>>>>>>>>>> http://florakarnataka.ces.iisc.ernet.in/hjcb2/herbsheet.php?id=1916&cat=1
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Habit:Armed tree
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Habitat:Dry deciduous forest
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Sighting:Devarayanadurga,Tumkur,Karnataka,about 800 msl
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Date:29-06-2015
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Thanks and regards
>>>>>>>>>>
>>>>>>>>>> tspkumar
>>>>>>>>>>
>>>>>>>>>> Deputy Conservator of Forests
>>>>>>>>>>
>>>>>>>>>> Working Plan
>>>>>>>>>>
>>>>>>>>>> Chikmagalur
>>>>>>>>>>
>>>>>>>>>> Ph:988057158
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> *“We have not inherited this planet from our forefathers, we have
>>>>>>>>>> borrowed it from our children”-An American proverb*
>>>>>>>>>>
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>>>>>>>>>>
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>>>>>>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Usha di
>>>>>> ===========
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Usha di
>>>> ===========
>>>>
>>>
>>>
>>
>

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