Nice explanation with apt example Gurcharan ji! Since tomato is the example here, I thought the article in this link is relevant here. http://www.nhm.ac.uk/resources/research-curation/projects/solanaceaesource/taxonomy/publications/Marshall_etal2001TheorApplGenet103.pdf
The introduction part provides some background information on the nomenclature of tomato and its allied taxa. Regards Vijayasankar Raman National Center for Natural Products Research University of Mississippi On Wed, Sep 19, 2012 at 5:55 PM, Gurcharan Singh <[email protected]> wrote: > Ushadi > There are two different aspects of taxonomy > 1. identifying the plant correctly: you identify a plant as tamatar, > tomato, Lycopersicon lycopersicum, Lycopersicon esculentum or Solanum > lycopersicum,.........it is a correct identification for our common plant > > 2. Correct nomenclature: what should be the correct scientific name used > when communicating. The herbarium sheets world over will bear the > scientific name applicable when the sheet was prepared, and very rarely > these labels are changed. Similarly many of have thousands of photographs > with label that will bear the name which we knew (depending on the book we > have used) at the time of identification. In fact all my photographs of > this species will have label Polygonum amplexicaule. Only when I upload > these photos, I will mention the current accepted name Persicaria > amplexicaulis in the text, the photograph label be same old Polygonum. > Why I mentioned tomato is because this plant Originally names Solanum > lycopersicon, underwent lot of name changes when transferred to genus > Lycopersicon (Lycopersicon lycopersicon to Lycopersicon lycopersicum > because former is a tautonym---a repeated name not accepted in botany > although accepted in Zoology). The experts had to sit in 1981 and declare > Lycopersicon esculentum as nomina conservanda. We used this as correct name > for nearly two decades till it was thought that tomato is a part of > Solanum, and we started using Solanum lycopersicon as correct name (See > GRIN). 2010 onwards we are again finding The Plant List using Lycopersicon > esculentum as the correct name. > > > -- > 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://www.gurcharanfamily.com/ > http://people.du.ac.in/~singhg45/ > > > > > > On Wed, Sep 19, 2012 at 1:51 PM, ushadi Micromini < > [email protected]> wrote: > >> Gurcharanji: >> no it does not >> the pink flowered one is labelled polygonum, on the slides >> usha di >> >> === >> >> >> On Wed, Sep 19, 2012 at 10:18 PM, Gurcharan Singh <[email protected]>wrote: >> >>> Ushadi >>> Perhaps of your interest (or you may already know) this species is >>> important medicinal plant and also popular herbal tea. >>> >>> Yes this plant produces bith white, pink to almost red flowers. Nidhan >>> ji in this thread uploaded plant with white flowers, identified as Percaria >>> amplexicaulis (Polygonum amplexicaule). Sine Nidhan ji had earlier uploaded >>> a red flowered plant also identified as P. amplexicaule, so he had some >>> confusion, and uploaded it again. To which Tiwari ji replied "yes it is >>> also same". >>> I hope it clarifies any confusion. >>> >>> >>> -- >>> 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://www.gurcharanfamily.com/ >>> http://people.du.ac.in/~singhg45/ >>> >>> >>> On Wed, Sep 19, 2012 at 9:29 AM, ushadi Micromini < >>> [email protected]> wrote: >>> >>>> thanks for thew science... >>>> but >>>> i was referring to the conversation you and nidhan were having... >>>> botanists perhaps understand the shorthand communication.. >>>> what is the same? as you said it? >>>> >>>> i dont understand this ... read the conversation you were having >>>> between the two of you and tell me what /which is which... >>>> >>>> we have many many non botanists who follow these very carefully... >>>> botanists /experts need to be explicit... and not use short hand >>>> conversation... >>>> >>>> thanks >>>> usha di >>>> >>>> >>>> >>>> >>>> On Wed, Sep 19, 2012 at 7:03 PM, Umeshkumar Tiwari < >>>> [email protected]> wrote: >>>> >>>>> Dear Mam, >>>>> >>>>> Treatments of Polygonum and related genera (subfamily Polygonoideae) >>>>> those by Haraldson and Ronse Decraene & Akeroyd, have segregated species >>>>> of >>>>> Polygonum in the broad sense adopted into two separate tribes, Polygoneae >>>>> and Persicarieae. The remainder of Polygonum in the broad sense is >>>>> generally assigned to Persicaria (or a varying number of segregate genera, >>>>> such as Aconogonon and Bistorta) which, with Antenoron and Koenigia, >>>>> comprises the tribe Persicarieae. >>>>> >>>>> *Characters for segregation of Two species:* >>>>> * >>>>> * >>>>> *Polygonum:* . Flowers axillary, solitary or in small clusters, >>>>> sometimes forming lax leafy spikes. Perianth (4- or)5-parted, not enlarged >>>>> in fruit. Stamens 5-8, reduced in number in outer whorl; >>>>> filaments, especially the inner, strongly dilated at base. >>>>> >>>>> *Persicaria:* Inflorescence spicate, spikes usually several. Tepals >>>>> fused for about 1/3 their length. Nectaries free, globular. Styles 1, >>>>> bifid >>>>> or trifid. >>>>> >>>>> Gurucharan Sir can be more useful for clarification. >>>>> >>>>> regards, >>>>> On Wed, Sep 19, 2012 at 6:49 PM, ushadi Micromini < >>>>> [email protected]> wrote: >>>>> >>>>>> now i am confused... >>>>>> is perscicaria and polgonum the same? >>>>>> >>>>>> usha di >>>>>> == >>>>>> >>>>>> On Wed, Sep 19, 2012 at 6:38 PM, Umeshkumar Tiwari < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> yes it is also same >>>>>>> >>>>>>> >>>>>>> On Wed, Sep 19, 2012 at 6:36 PM, Nidhan Singh < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> Thanks Umesh Ji...I was almost sure this being P. >>>>>>>> amplexicaulis...the only doubtful thing is the attached plant which is >>>>>>>> also >>>>>>>> identified as *P. amplexicaul(e)is*....hope to get clarifications >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> Regards, >>>>>>>> >>>>>>>> Dr. Nidhan Singh >>>>>>>> Assisstant Professor >>>>>>>> Department of Botany >>>>>>>> I.B. (PG) College >>>>>>>> Panipat-132103 Haryana >>>>>>>> Ph.: 09416371227 >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Umeshkumar Tiwari, Research Associate >>>>>>> www.medicinalplantsofuttarakhand.in >>>>>>> *www. <http://www.planttaxonomy.blogspot.com/>* >>>>>>> planttaxonomy.blogspot.com/ >>>>>>> Foundation for Revitalisation of Local Health Traditions (FRLHT) >>>>>>> Institute of Ayurveda and Integrative Medicine >>>>>>> No.74/2, Jarakbande Kaval >>>>>>> Post: Attur, Via Yelahanka >>>>>>> Bangalore - 560 064 >>>>>>> +91-9591862200 (KA) >>>>>>> +91-9411313351(UK) >>>>>>> >>>>>>> -- >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Usha di >>>>>> =========== >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> Umeshkumar Tiwari, Research Associate >>>>> www.medicinalplantsofuttarakhand.in >>>>> *www. <http://www.planttaxonomy.blogspot.com/>* >>>>> planttaxonomy.blogspot.com/ >>>>> Foundation for Revitalisation of Local Health Traditions (FRLHT) >>>>> Institute of Ayurveda and Integrative Medicine >>>>> No.74/2, Jarakbande Kaval >>>>> Post: Attur, Via Yelahanka >>>>> Bangalore - 560 064 >>>>> +91-9591862200 (KA) >>>>> +91-9411313351(UK) >>>>> >>>>> >>>> >>>> >>>> -- >>>> Usha di >>>> =========== >>>> >>>> >>>> -- >>>> >>>> >>>> >>>> >>> >>> >>> >>> >> >> >> -- >> Usha di >> =========== >> >> -- >> >> >> >> > > > > -- > > > > --
