Thanks for the clarification - Tabish
On Nov 19, 11:07 am, Gurcharan Singh <[email protected]> wrote: > Tabish > Not to be confused with Conyza bonariensis, but yes often confused with > Conyza canadensis. It is a much taller plant often reaching 1.5 m, whereas > C. bonariensis does not grow more than 50 cm > > I am enclosing all the three together. > > This key from eFlora of Taiwan should help > > 4 > (3)<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=107911#K...>Heads > ca. 2.5-3.5 mm across, ligules small but apparent. > (5)<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=107911#K...> > +Heads ca. 5-8 mm across, ligules obscure. > (6)<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=107911#K...> > 5 > (4)<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=107911#K...>Stems > hirsute; leaves lanceolate, serrate. var. > canadensis<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=242426454> > +Stems glabrate; leaves linear, nearly entire. var. > pusilla<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=242412732> > 6 > (4)<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=107911#K...>Leaves > linear to linear-lanceolate; axillary branches usually overtopping axis. > Conyza > bonariensis<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=200023707> > +Leaves oblanceolate; axillary branches not overtopping main axis. Conyza > sumatrensis<http://www.efloras.org/florataxon.aspx?flora_id=100&taxon_id=200023715> > > -- > 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: 9810359089http://people.du.ac.in/~singhg45/ > . > > > > > > > > On Sat, Nov 19, 2011 at 11:06 AM, Tabish <[email protected]> wrote: > > Dear Gurcharan ji, > > I am not able to differentiate this picture from Conyza > > bonariensis. Any clues? > > - Tabish > > > On Oct 24, 9:19 pm, Gurcharan Singh <[email protected]> wrote: > > > *Conyza sumatrensis* (Retz.) Walker, J. Jap. Bot. 46: 72. 1971 > > > syn *Erigeron* *sumatrensis* Retz.; *Erigeron albida* Willd. ex Spreng > > > > This late flowering species as indicated in the key comes to flower in > > > August and continues to end of September as we found in Chakrata area is > > > much more rebust than C. canadensis, reaching 2 m in height much > > branched in > > > the upper part, branches and leaves densely hairy, lower leaves > > > oblanceolate, upper linear-lanceolate, heads longer and broader, 4-6 mm > > > across, phyllaries densely hairy with shorter hairs; broader fruiting > > head > > > and longer pappus. > > > > -- > > > 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: 9810359089http://people.du.ac.in/~singhg45/ > > > > Conyza albida-Balgarden-Kashmir-1.jpg > > > 668KViewDownload > > > > Conyza albida-Balgarden-Kashmir-2.jpg > > > 325KViewDownload > > > > Conyza albida--Balgarden-Kashmir-3.jpg > > > 138KViewDownload > > > > Conyza albida--Balgarden-Kashmir-4.jpg > > > 163KViewDownload > > > > Conyza bonariensis L-C albida-C canadensis-Kashmir-1.jpg > 290KViewDownload > > Conyza bonariensis L-C albida-C canadensis-R-Kashmir-5-DSC07373.jpg > 248KViewDownload > > Conyza bonariensis L-C albida-C canadensis-R-Kashmir-6-DSC07377.jpg > 295KViewDownload > > Conyza bonariensis L-C albida-C canadensis-R-Kashmir-7DSC07370.jpg > 386KViewDownload
