Satish ji and Muthu ji
There have been lot of nomenclature changes in this genus. Bailey in Manual
of cultivated plants considered A. bettzickiana, A. amoena and A. versicolor
as distinct species. They are now all treated under single species A.
bettzickiana.
GRIN, which we generally follow for nomenclature purposes, considers A.
tenella Colla as synonym of A. ficoidea and not a distinct species.
--
Dr. Gurcharan Singh
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/
On Mon, Nov 30, 2009 at 7:33 PM, Satish Phadke <[email protected]>wrote:
> Even I have same doubts as Muthu ji ...........rightly pointed.
>
> 2009/11/30 Muthu Karthick <[email protected]>
>
> This key is highly useful sir,
>> I have a doubt about *Alternanthera* *bettzickiana was it a variety of A.
>> tenella. Also, would be more useful if A.tenella is included in key.*
>> **Thank you.
>>
>> On Sat, Nov 28, 2009 at 4:12 PM, Gurcharan Singh <[email protected]>wrote:
>>
>>> Trying to keep it as simple as possible (but also fearing technical
>>> differences may get blurred) for easy identification:
>>>
>>> 1. Inflorescence a head on raised stalk
>>>
>>> 2. Plants with thick reddish leaves, atleast ¾ as broad
>>> as long; cultivated as
>>>
>>> hedge/border plant ..……………………………..1. *A. brasileana
>>> (i*ncl.* A. dentata)*
>>>
>>> 2. Leaves not reddish, less than ½ as broad as long;
>>> wild plant of moist or aquatic
>>>
>>> habitats. ………………………………………….2. *A.philoxeroides.*
>>>
>>> 1. Inflorescence a sessile head in leaf axils
>>>
>>> 3. Plants prostrate, mat-forming
>>>
>>> 4. Leaves atleast ¾ as broad as long, stems and leaves rigid;
>>> flowers (tepals)
>>>
>>> spine-tipped…………………………………3. *A. pungens*
>>>
>>> 4. Leaves usually less than ½ as broad as long, stems and leaves
>>> soft; flowers
>>>
>>> (tepals) not spin-tipped……………………..4. *A. paronychoides*
>>>
>>> 3. Plants erect or spreading not mat-forming
>>>
>>> 5. Leaves sessile, linear or narrowly oblanceolate; plant of
>>> moist or
>>>
>>> wet situations………………………………. 5. A. sessilis
>>>
>>> 5. Leaves with distinct petiole; mostly cultivated
>>>
>>> 6. Leaves green or tinged with purple; mostly
>>> oblanceolate,
>>>
>>> gradually narrowed into petiole, less than ½ as
>>> broad
>>>
>>> as long…………………………….6. *A. bettzickiana* (incl.* A.
>>> amoena*
>>>
>>>
>>> and *A. versicolor*)
>>>
>>> 6. Leaves green, not tinged with purple; mostly
>>> elliptic-ovate, more
>>>
>>> than ½ as broad as long, more sharply narrowed into
>>> short
>>>
>>> petiole…………………..……………... 7. *A. ficoidea*
>>>
>>> No decision/information yet on A. pulchella, although it is listed on the
>>> net profusely.
>>>
>>>
>>> --
>>> Dr. Gurcharan Singh
>>> 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/ <http://people.du.ac.in/%7Esinghg45/>
>>>
>>>
>>> On Sat, Nov 28, 2009 at 2:58 PM, Satish Phadke
>>> <[email protected]>wrote:
>>>
>>>> From whatever descriptions emerged I have prepared a simple practical
>>>> key for guiding to the ID of Alternanthera species. Final Id confirmation
>>>> has to be made by looking at all the characters.
>>>> *The thread is open for suggestions and corrections if
>>>> any......................*
>>>> 1)Colour of leaves red brown; cultivated garden plant........*
>>>> A.brasiliana*
>>>> 2)Sessile linear
>>>> leaves...................................................*A.sessilis*
>>>> 3)Plant carpet like; leaves orbicular or ovate3*3cm...........*
>>>> A.pungens*
>>>> 4)...................similar....not much
>>>> info............................*A.pulchella*
>>>> 5) Erect tufted herbs; small
>>>> petiole................................*A.ficoidea
>>>> or*
>>>> Erect branched herb ................................................
>>>> *A.bettzichiana*
>>>> .................may be syn..As per BSI Mah.......................*
>>>> A.tenella* var.versicolour
>>>> 6)Aquatic herb; flowers in globose heads........................*
>>>> A.philoxeroides.*
>>>> This is an humble attempt some corrections might erupt..
>>>> Dr Satish Phadke
>>>>
>>>> 2009/11/28 J.M. Garg <[email protected]>
>>>>
>>>> Dear members,
>>>>> Singh ji has posted six species of Alternanthera recently.
>>>>> He has also stated in one of the threads that "... the Alternanthera
>>>>> species on our databases need to be sorted out...".
>>>>> In view may I request the members to pl. have a re-look at their
>>>>> Alternanthera species in Indiantreepix Database or otherwise & post them
>>>>> for
>>>>> sorting out in case they have any doubts.
>>>>> --
>>>>> With regards,
>>>>> J.M.Garg ([email protected])
>>>>> http://en.wikipedia.org/wiki/User:Jmgarg1
>>>>> 'Creating awareness of Indian Flora & Fauna'
>>>>> Image Resource of more than a thousand species of Birds, Butterflies,
>>>>> Plants etc. (arranged alphabetically & place-wise):
>>>>> http://commons.wikimedia.org/wiki/Category:J.M.Garg
>>>>> For learning about Indian Flora, visit/ join Google e-group-
>>>>> Indiantreepix:http://groups.google.co.in/group/indiantreepix?hl=en
>>>>>
>>>>> --
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>>>>>
>>>>
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>>>
>>>
>>>
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>>
>>
>>
>> --
>> Muthu Karthick, N
>> Junior Research Fellow
>> Care Earth
>> Chennai
>> www.careearthtrust.org
>>
>
>
--
Dr. Gurcharan Singh
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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