Dear Tabish, In current Arisaema research we are very hesitant to distinguish varieties based on leaf forms if the species itself is a highly polymorphic and widespread species, do remember that Arisaema tortuosum is distributed from Himachal Pradesh in the west of the Himalays to China in the east and further south in S India and Sri Lanka and therefore shows many characters that do vary due to local growing conditions. The presence or absence of stem markings for instance. Or the color of the appendix. Only some local manifestations are sufficiently different to describe them as a variety like Arisaema sivadasanii which is now reduced to A. tortuosum var. sivadasanii. Arisaema neglectum which sometimes is described as a variety of tortuosum however is in my view a true species. DNA research has proved that the tortuose appendix of section Tortuosa is polyphyletic which means that, although species might have the same appendix and show visible similarities, genetically they are not necessarily closely related and that the upright appendix might have originated independently.
Arisaema tortuosum var. curvatum and var. helleborifolium by most authors on Arisaema taxonomy are no longer recognised as separate varieties for more than a decade. Regards, Pascal PS. I could not open the link in your e-mail unfortunately ---------- Forwarded message ---------- From: Tabish <[email protected]> Date: Nov 20, 9:16 pm Subject: Fwd: Fwd: Arisaema From Solan HP To: efloraofindia Arisaema tortuosum var. curvatum http://www.flowersofindia.net/catalog/slides/Curved-Hood%20Cobra %20Li... I have no idea about the current status of the name. It can be compared with Arisaema tortuosum here http://www.flowersofindia.net/catalog/slides/Whipcord%20Cobra %20Lily.... - Tabish On Nov 20, 9:29 pm, Pascal Bruggeman <[email protected]> wrote: > Apologies, I meant Arisaema tortuosum var. curvatum, not recurvatum > ---------- Forwarded message ---------- > From: Pascal Bruggeman <[email protected]> > Date: 19 nov, 16:58 > Subject: Fwd: Arisaema From Solan HP > To: efloraofindia > Dear Dr. Balkar, > This is the narrow leaved form of Arisaema tortuosum, previously > described as Arisaema tortuosum var. recurvatum. The broad leaved form > was described as var. helleborifolium but both varieties are now > considered to be extremes within the variational range of the > widespread Arisaema tortuosum. Arisaema erubescens has radiatiasect > leaves and a truncate appendix that does not portrude the spathe > mouth, this in contrast to the tortuose (elephant trunk like) appendix > of the plant on the pictures. > Regards, > Pascal Bruggeman > The Netherlands > ---------- Forwarded message ---------- > From: Balkar Arya <[email protected]> > Date: 14 apr, 18:54 > Subject: Arisaema From Solan HP > To: efloraofindia > Dear All > Arisaema spp for id pls > *From Solan* > * * > *Date/Time-* > * * > *23-6-08* > *Location- Place, Altitude, GPS- * > * * > *Solan Himachal Pradesh* > *Habitat-** Garden**/ Urban/ Wild/ Type* > *Wild* > *Plant Habit- Tree/ Shrub/ Climber/ Herb* > *Herb* > *Height/Length- * > * * > *2-3 ft * > *Leaves Type/ Shape/ Size-* > * * > *Palmately compound* > Regards > Dr Balkar Singh > Head, Deptt. of Botany and Biotechnology > Arya P G College, Panipat > Haryana-132103 > 09416262964 > Arisaema.jpg > 168KWeergevenDownloaden > Arisaema solan.jpg > 260KWeergevenDownloadenThis is Arisaema tortuosum. Arisaema erubescens > is an endemic species from C Nepal with a radiatisect leaf and a > truncate spadix not portruding the spathe. The plant on the picture > has 2 pedatisect leaves with a- Hide quoted text - - Show quoted text -
