Two characters are significant in differentiating these species. Leaves truncate to cordate at base, involucre bracts narrowly lanceolate, less than 1 mm broad, gradually narrowed to subulate tip 1-2 mm long in A. houstonianum. In A. conyzoides leaves are narrowed at base, involucre bracts oblong to oblong-lanceolate, suddenly narrowed at tip to less than 1 mm long point. I have downloaded and enlarged last two images, the involucre bracts also match A. conyzoides. The conflict seems to be too much long hairs on bracts and peduncle.
On Thursday, January 2, 2020 at 3:34:41 PM UTC+5:30, JM Garg wrote: > > Thanks, Rakesh ji. > I do not agree. > Pl. see details and comparative images at ‎Ageratum > <https://sites.google.com/site/efloraofindia/species/a---l/ar/asteraceae/asteroideae/eupatorieae/ageratum> > > On Mon, 23 Dec 2019 at 13:58, dr.rakesh Singh <[email protected]> > wrote: > >> Leaf base as much seen , is not cordate ... which I have found every >> time I met with A. houstonianum . Plus , head size is not really that big ! >> I wd say A. conyzoides . >> >> On Fri, Dec 13, 2019 at 12:45 PM J.M. Garg <[email protected]> wrote: >> >>> Thanks, Singh ji, >>> Details are not clear due to smaller images. >>> But I think it is more closer to Ageratum houstonianum >>> <https://sites.google.com/site/efloraofindia/species/a---l/ar/asteraceae/asteroideae/eupatorieae/ageratum/ageratum-houstonianum> >>> rather >>> than Ageratum conyzoides >>> <https://sites.google.com/site/efloraofindia/species/a---l/ar/asteraceae/asteroideae/eupatorieae/ageratum/ageratum-conizoides> >>> as >>> per keys and details herein. >>> >>> On Fri, 13 Dec 2019 at 12:29, Gurcharan Singh <[email protected]> >>> wrote: >>> >>>> Ageratum conyzoides I hope >>>> >>>> Dr. Gurcharan Singh >>>> Retired Associate Professor >>>> SGTB Khalsa College, University of Delhi, Delhi-110007 >>>> Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. >>>> Mob: 9810359089 >>>> https://sing96.wixsite.com/mysite-1 >>>> >>>> Overwhelmed by the positive response to the shareable 30% off discount, >>>> we have extended the deadline. Use Code - *ADS19 - now* until December >>>> 31, 2019 ! >>>> >>>> >>>> >>>> >>>> On Fri, Dec 13, 2019 at 12:22 PM J.M. Garg <[email protected]> wrote: >>>> >>>>> I think closer to *Ageratum houstonianum* >>>>> <https://sites.google.com/site/efloraofindia/species/a---l/ar/asteraceae/asteroideae/eupatorieae/ageratum/ageratum-houstonianum> >>>>> as >>>>> per details and keys herein. >>>>> >>>>> ---------- Forwarded message --------- >>>>> From: ankush prakash <[email protected]> >>>>> Date: Sat, 21 Jan 2012 at 17:40 >>>>> Subject: flowe id...place-ambala cantt....habitat-roadside >>>>> To: Balkar Singh <[email protected]>, efloraindia < >>>>> [email protected]>, gurcharan singh sir < >>>>> [email protected]>, j m garg <[email protected]>, Madhuri Pejaver < >>>>> [email protected]>, mustafa dandu <[email protected]>, N >>>>> Arun Kumar Kumar <[email protected]>, Neil Soares < >>>>> [email protected]>, Nidhan Singh <[email protected]>, Dr >>>>> Pankaj Kumar <[email protected]>, Pankaj Oudhia < >>>>> [email protected]>, prabhu kumar <[email protected]>, >>>>> Rakesh Biswas <[email protected]>, Satish Phadke < >>>>> [email protected]>, Smita Raskar <[email protected]>, Tanay >>>>> Bose <[email protected]>, Ushadi micromini < >>>>> [email protected]>, vikesh vasudev <[email protected]> >>>>> >>>>> >>>>> Please help me to identify this plant >>>>> >>>>> Place-ambala cantt >>>>> Month-Jan >>>>> habitat-roadside >>>>> Height-about 1.5 feet >>>>> >>>>> Regards >>>>> Ankush Prakash >>>>> >>>>> >>>>> -- >>>>> With regards, >>>>> J.M.Garg >>>>> >>>>> 'Creating awareness of Indian Flora & Fauna' >>>>> <http://en.wikipedia.org/wiki/User:Jmgarg1> >>>>> >>>>> Winner of Wipro-NFS Sparrow Awards 2014 for efloraofindia >>>>> <https://sites.google.com/site/efloraofindia/award-for-efloraofindia> >>>>> . >>>>> >>>>> For identification, learning, discussion & documentation of Indian >>>>> Flora, please visit/ join our Efloraofindia Google e-group >>>>> <https://groups.google.com/forum/#!forum/indiantreepix> (largest in >>>>> the world- more than 3,000 members & 3,00,000 messages on 23.8.18) or >>>>> Efloraofindia >>>>> website <https://sites.google.com/site/efloraofindia/> (with a >>>>> species database of more than 13,000 species & 3,00,000 images of which >>>>> more than 2,00,000 images are directly displayed on 30.8.19). >>>>> >>>>> The whole world uses my Image Resource >>>>> <http://commons.wikimedia.org/wiki/Category:J.M.Garg> of more than a >>>>> thousand species & eight thousand images of Birds, Butterflies, Plants >>>>> etc. >>>>> (arranged alphabetically & place-wise). You can also use them for free as >>>>> per Creative Commons license attached with each image. >>>>> >>>>> Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of >>>>> India'. >>>>> >>>> >>> >>> -- >>> With regards, >>> J.M.Garg >>> >>> 'Creating awareness of Indian Flora & Fauna' >>> <http://en.wikipedia.org/wiki/User:Jmgarg1> >>> >>> Winner of Wipro-NFS Sparrow Awards 2014 for efloraofindia >>> <https://sites.google.com/site/efloraofindia/award-for-efloraofindia>. >>> >>> For identification, learning, discussion & documentation of Indian >>> Flora, please visit/ join our Efloraofindia Google e-group >>> <https://groups.google.com/forum/#!forum/indiantreepix> (largest in the >>> world- more than 3,000 members & 3,00,000 messages on 23.8.18) or >>> Efloraofindia >>> website <https://sites.google.com/site/efloraofindia/> (with a species >>> database of more than 13,000 species & 3,00,000 images of which more than >>> 2,00,000 images are directly displayed on 30.8.19). >>> >>> The whole world uses my Image Resource >>> <http://commons.wikimedia.org/wiki/Category:J.M.Garg> of more than a >>> thousand species & eight thousand images of Birds, Butterflies, Plants etc. >>> (arranged alphabetically & place-wise). You can also use them for free as >>> per Creative Commons license attached with each image. >>> >>> Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of >>> India'. >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "efloraofindia" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web, visit >>> https://groups.google.com/d/msgid/indiantreepix/CA%2BiuSFApoSi8LCPFeC_X74w_voJdJ3Mh7ER-yQh0Dg%2BWa9%3DwGQ%40mail.gmail.com >>> >>> <https://groups.google.com/d/msgid/indiantreepix/CA%2BiuSFApoSi8LCPFeC_X74w_voJdJ3Mh7ER-yQh0Dg%2BWa9%3DwGQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "efloraofindia" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/indiantreepix/CACeZjXjNWNSyyqJcgQ7hhsYKGPM5orJy%3DgA_enF9c%3DjZuX6wTw%40mail.gmail.com >> >> <https://groups.google.com/d/msgid/indiantreepix/CACeZjXjNWNSyyqJcgQ7hhsYKGPM5orJy%3DgA_enF9c%3DjZuX6wTw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > With regards, > J.M.Garg > > 'Creating awareness of Indian Flora & Fauna' > <http://en.wikipedia.org/wiki/User:Jmgarg1> > > Winner of Wipro-NFS Sparrow Awards 2014 for efloraofindia > <https://sites.google.com/site/efloraofindia/award-for-efloraofindia>. > > For identification, learning, discussion & documentation of Indian Flora, > please visit/ join our Efloraofindia Google e-group > <https://groups.google.com/forum/#!forum/indiantreepix> (largest in the > world- more than 3,000 members & 3,00,000 messages on 23.8.18) or > Efloraofindia > website <https://sites.google.com/site/efloraofindia/> (with a species > database of more than 13,000 species & 3,00,000 images of which more than > 2,00,000 images are directly displayed on 30.8.19). > > The whole world uses my Image Resource > <http://commons.wikimedia.org/wiki/Category:J.M.Garg> of more than a > thousand species & eight thousand images of Birds, Butterflies, Plants etc. > (arranged alphabetically & place-wise). You can also use them for free as > per Creative Commons license attached with each image. > > Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of > India'. > -- You received this message because you are subscribed to the Google Groups "efloraofindia" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/indiantreepix/05704edf-2ef8-4991-b5c0-b73cbbb1eb06%40googlegroups.com.
