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 <singh...@gmail.com> 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/ > > > On Sat, Nov 28, 2009 at 2:58 PM, Satish Phadke <phadke.sat...@gmail.com>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 <jmga...@gmail.com> >> >> 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 (jmga...@gmail.com) >>> 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 >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "indiantreepix" group. >>> To post to this group, send email to indiantree...@googlegroups.com. >>> To unsubscribe from this group, send email to >>> indiantreepix+unsubscr...@googlegroups.com<indiantreepix%2bunsubscr...@googlegroups.com> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/indiantreepix?hl=en. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "indiantreepix" group. >> To post to this group, send email to indiantree...@googlegroups.com. >> To unsubscribe from this group, send email to >> indiantreepix+unsubscr...@googlegroups.com<indiantreepix%2bunsubscr...@googlegroups.com> >> . >> For more options, visit this group at >> http://groups.google.com/group/indiantreepix?hl=en. >> > > > > -- > You received this message because you are subscribed to the Google Groups > "indiantreepix" group. > To post to this group, send email to indiantree...@googlegroups.com. > To unsubscribe from this group, send email to > indiantreepix+unsubscr...@googlegroups.com<indiantreepix%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/indiantreepix?hl=en. > -- Muthu Karthick, N Junior Research Fellow Care Earth Chennai www.careearthtrust.org -- You received this message because you are subscribed to the Google Groups "indiantreepix" group. 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