Conyza sumatrensis

Conyza sumatrensis (Retz.) E. Walker, J. Jap. Bot. 46:72. 1971 in view of efi thread;
 
Erigeron sumatrensis Retz., Observ. bot. 5:28. 1788 ("1789") (Syn: (=) Conyza albida Willd. ex Spreng.; (=) Conyza bonariensis var. microcephala (Cabrera) Cabrera; (≡) Conyza sumatrensis (Retz.) E. Walker; (=) Erigeron bonariensis var. microcephala Cabrera) as per GRIN.

Images by Gurcharan Singh & (Bhagyashri Ranade - Id by Gurcharan Singh) 
https://groups.google.com/group/indiantreepix/attach/367d48f4e492fe65/Conyza%20albida-Balgarden-Kashmir-1.jpg?part=0.1&authuser=0&view=1
https://groups.google.com/group/indiantreepix/attach/367d48f4e492fe65/Conyza%20albida-Balgarden-Kashmir-2.jpg?part=0.2&authuser=0&view=1
https://groups.google.com/group/indiantreepix/attach/367d48f4e492fe65/Conyza%20albida--Balgarden-Kashmir-4.jpg?part=0.4&authuser=0&view=1
https://groups.google.com/group/indiantreepix/attach/de520e7935f3c0b8/IMG_1260_1.jpg?part=0.7&authuser=0&view=1

 
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.  
 
1a. Plants usually shorter than 50 cm; lateral branches equalling or overtopping main axis; heads 5-8 mm across; ray corolla shorter than 0.3 mm; fruiting head 8-10 mm across, pappus 3-4 mm long; lower leaves
linear-lanceolate, upper linear....................................................................................Conyza bonariensis
1b. Plants usually taller than 50 cm; lateral branches shorter than main axis; heads less than 6 mm across;
lower leaves lanceolate or oblanceolate, upper linear-lanceolate..................................... (2)
2a. Ray corolla shorter than 0.3 mm; heads 4-6 mm across; fruiting head 7-8 mm across, pappus 3-4 mm
long; lower leaves oblanceolate, upper linear-lanceolate; plants densely hairy, phyllaries short
hairy........................................................................................................................Conyza sumatrensis (syn. of
Erigeron sumatrensis Retz.)
2b. Ray corolla 0.3-1 mm long; heads 2-4 mm across; fruiting head 5-6 mm across, pappus 2-3 mm long;
leaves lanceolate; plants sparsely hairy; phyllaries with few long hairs............................Conyza canadensis  
  
 


 
https://08511630493324166816.googlegroups.com/attach/de520e7935f3c0b8/basal%20leaves.jpg?part=0.1&view=1&vt=ANaJVrF_i-M9xw8XDG0R5gifDU9_nO8DPd2SCf_7NC8HlWWIZJSPpO4Ion2a8YfwJCreiKcAsvP6Ugw6Qd4JN2dinWZrbcpg8U-ixtV7tbEte4OJEaIBPug
https://08511630493324166816.googlegroups.com/attach/de520e7935f3c0b8/close%20up%20view%20stem.JPG?part=0.5&view=1&vt=ANaJVrHv3MOgXJwREZejEb7R1R0ADZVBjh4MqwB6JwRlTwTFKTWmMFK4hE_TItLOdLlwPkZSC0qBf79_TLiJ7G-hJD7ctMsp50gI9dbrqVDbjQBo1oqkZrA

Kindly help Id this plant growing wild at Pune ? Conyza bonariensis 
about 3.5 feet to 4 feet with narrow coarsely toothed basal leaves and slender top leaves. yellow flower heads and I think brownish seeds in the centre surrounded by white hair 
I cannot comment on hair on stem and leaves as this was growing in a compound of a locked bungalow but a cropped picture of the stem I think appears to show stiff hair. 
Features match with Conyza bonariensis except the height which is more than 75 cms
This should be Conyza bonariensis only, can grow taller.
As became clear from more photographs uploaded by ... in My Trees, it should be C. sumatrensis.

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.
https://08511630493324166816.googlegroups.com/attach/72b0b51a9f945508/4.jpg?part=0.4&view=1&vt=ANaJVrHUDJd4UEBWmi0V_c6r4uDHGCZSIj5cky9rHpY3MsVuA2b_VjfPZUDh5lQ4ejyOmwSrTRu67oO0DY4KPBlPtp2MaS0yWIVUSoDx6draWVEcUUEXcHo
https://08511630493324166816.googlegroups.com/attach/72b0b51a9f945508/5_IMG_1260_2.jpg?part=0.5&view=1&vt=ANaJVrH0BRwrndPvM02Wa7py4Slsi9oHFm_8bRStdwuJqHqm1CSuxk4SN4XIMB2x7XeyvU9k4fD_QJ7hEmADSlGWucKy33KtCMUH5TDWdtEKy-Wr-ARJ890
 
https://08511630493324166816.googlegroups.com/attach/72b0b51a9f945508/6_IMG_1263.jpg?part=0.6&view=1&vt=ANaJVrEz6wtjmo3fYw0dV80kbrVRiHBdI-O7pUu7JMLfSpixSLHjPx5gUHeQNx2GP0scL2oC_CB5YYk9Kotl-SOiUNQELPjvnpZFGrPAM7n0GY41hS99Npo
https://08511630493324166816.googlegroups.com/attach/72b0b51a9f945508/3_101220113065.jpg?part=0.3&view=1&vt=ANaJVrEEsK0v-vRIxUw1Nao7DsZtbyYtp3SSxFj-8F6GXV3G6cda-YE94j2LSDm8agSvuFae9iSWGgklWNkomkbUdlE4TClyuvH_ps6F2z89nFZb0Qr72uM
https://08511630493324166816.googlegroups.com/attach/72b0b51a9f945508/2_101220113064.jpg?part=0.2&view=1&vt=ANaJVrFlgkncwRVdelgM8M_fGuRLk9dkSGndnqrpYIcvYGmKXw6uDjIpmQRTxlgiqBnajMCt5dkY1YzW8vXQCtqZeAPDgEwB0rtsitHJqAWrD6NV6ZceyAU
https://groups.google.com/group/indiantreepix/attach/72b0b51a9f945508/1_101220113067.jpg?part=0.1&authuser=0&view=1

Asteraceae Week Part I-Radiate heads:- Conyza sumatrensis from Pune –MR01 : Attachments (6).  
1 post by 1 author.
sharing images of Conyza sumatrensis from Pune. This plant finally became tall and fell down.
image 4.jpg under this thread is not of Conyza sumatrensis but Conyza bonariensis. I have posted it by mistake. is it possible to delete it from the thread?
 
https://08511630493324166816.googlegroups.com/attach/9b85dc1747b5fe17/Way%20to%20Pahalgam-DSC_0362-Cropped.JPG?part=0.2&view=1&vt=ANaJVrGSQp0RqPyNWdD1lQHQRQUNjgcJi6Mh5lsqouIJA9e_fjk15weMYTF0-VHri-6w56Ojuw7QhIMHigO-Tc7ILTC7Jhc-QtfXI-PUDWBhcX5_DSTNFz4
https://08511630493324166816.googlegroups.com/attach/9b85dc1747b5fe17/Way%20to%20Pahalgam-DSC_0362.JPG?part=0.1&view=1&vt=ANaJVrFjnXeChzVAPV_NHaSEIfm6ZNSDIiZ2Vlz9uM-Mz7jIgG2rOshgFVegYW0rfyxdkz_-NlHvMzmrALeJa3rAOyJ-MjyOnFJ6EZcU7-kwh1PyXX6XsGQ

Asteraceae : Wild Plant For ID : 180613 : AK-2 : Attachments (2).  
Picture taken on the Jammu-Srinagar Highway, on way to Pahalgam on 6/9/2011.
Found this plant growing in a Maize field.
Conyza?
Conyza sumatrensis
This has been identified as Conyza sumatrensis by you.
Both seem to be the same.
I think yes
 
 
https://08511630493324166816.googlegroups.com/attach/cc6d1e9a1ac357e2/Conyza%20albida--Balgarden-Kashmir-3.jpg?part=0.3&view=1&vt=ANaJVrHELIcnWAnp73Y6opBo2YqyRKvNTx063NIV7qoR8SWK1Nl1i4IgM0R1ha5-fEf8GI_vDFIHq8-DelurhAYhp_PHowpl0GEgUK43Mx70NU_f1040HJk
Small flowered conyza species: 3. Conyza sumatrensis from Kashmir: 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.
I am not able to differentiate this picture from Conyza bonariensis. Any clues?
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)Heads ca. 2.5-3.5 mm across, ligules small but apparent.
(5)
+Heads ca. 5-8 mm across, ligules obscure.
(6)




5 (4)Stems hirsute; leaves lanceolate, serrate.
var. canadensis
+Stems glabrate; leaves linear, nearly entire.
var. pusilla




6 (4)Leaves linear to linear-lanceolate; axillary branches usually overtopping axis.
Conyza bonariensis
+Leaves oblanceolate; axillary branches not overtopping main axis.
Conyza sumatrensis

 
Correction in Bot. name of Tall Fleabane is required in line with efi page on Erigeron sumatrensis
If we are merging Conyza with Erigeron, there should be no Conyza page.
GRIN and Flora of China merge Conyza in Erigeron
The Plant List, Tropicos and Global Compositae List Treat them distinct and I would prefer following them
Thanks, ..., for pointing out this very important aspect.
Further author citation is not correct at Tall Fleabane (FOI)
 
 
https://08511630493324166816.googlegroups.com/attach/51eed5e9c6f95152/DSCN2338.JPG?part=0.2&view=1&vt=ANaJVrHiMD1V81hSy5wyd4GFnhRWP2Ddg-H3VVNXGEfE8e1i8yNQ61tsJuEiZnccy3hmNljwY27gYMEew22ZYEAWBXfnf6MxnkW9KTP0yPXLT3wsRNlybZA
https://08511630493324166816.googlegroups.com/attach/51eed5e9c6f95152/DSCN2337.JPG?part=0.1&view=1&vt=ANaJVrH4cBh73VO3CBm4gmTizFaUqjvFxDkV572hKz2cSNeic7P7IXLJeT04FMOKroH-LQA9XLxmpEPkD7aNynlasVdJQzGaqDLpBxHPCKt1KwLBmYViDR4
Wild Flowers for ID : Kashmir : 111011 : AK-2: Wild flowers taken on the way to Gulmarg, at the viewpoint during the climb up the mountain on the 11th of Sept,11.
Some Asteraceae?
Some Conyza may be.
I also have this photograph, not able to place yet but could be Brachyactis robusta
Finally identified as Conyza japonica
Looks some conyza sp. Send pics of flower heads, these are fruiting heads.
When the picture was taken in Sept,2011, the flowering was probably over.
Then it could be Conyza sumatrensis
Conyza sumatrensis? ABJUL01/30 : 4 posts by 3 authors. 4 images.
These tall leafy shrubs are growing everywhere and sprouting flower-heads now. Could these be Conyza sumatrensis?
Mcleodganj, Dharamshala, HP
1750m
20 July 2016. 
Yes ..., often confused and identified as taller form of C. canadensis.
I don't know about your area but in Kashmir valley C. canadensis generally flowers in May June, whereas C. sumatransis commences flowering towards middle of July and continues up to September. Heads are shaped somewhat like C. canadensis but longer. 

Thank you ... for explaining this. I think I photographed a C. canadensis yesterday and will file it in a separate thread for your advice.
 
 
https://groups.google.com/group/indiantreepix/attach/18915c5cfcf5c/_MG_0268_22July2016.jpg?part=0.1.2&authuser=0
https://groups.google.com/group/indiantreepix/attach/18915c5cfcf5c/_MG_0263_22July2016.jpg?part=0.1.1&authuser=0
Conyza sp. ABJUL01/34 : 4 posts by 2 authors. 2 images.
This plant was about 40cm tall and was only one of the two growing in that rainwater drain. Which Conyza species could this be? I do not have more detailed photos as I had to practically lie down to take this photo. But if required I can collect a leaf and a flowerhead and have a closer look.
Mcleodganj, Dharamshala, HP
1750m
22 July 2016.
I think appear closer to Conyza sumatrensis (Retz.) E. Walker as per comparative images at Conyza
 
 
https://08511630493324166816.googlegroups.com/attach/8f5661f85137e/P1160033.JPG?part=0.2&view=1&vt=ANaJVrFN1ZG-bTJh0VKaByvcyAzKa95U1fa7CeLGrvBe1-y8Y5WiJHd0fKYkFxU9sAwYia0n0HGvf2-wBYdx8I-WYgnhIyL8ye__1Q3VMDKLMSK6L1uTS0s
https://08511630493324166816.googlegroups.com/attach/8f5661f85137e/P1160032.JPG?part=0.1&view=1&vt=ANaJVrHmJBvKwZ5Eb6pgZCD4YI4n8BFQHHLo77nuNMFby5mD6fARQxDM-55HG68I9Ol9XOw6ciq1yFbXwqeYGbM49yRy4ixoH8hBWPSiZkktUcfQzT8pW-k
Wild Plant For ID : Bangalore : 05FEB17 : AK-7 : 14 posts by 3 authors. Attachments (2)
Wild plant seen in Bangalore in the first week of Jan.
It was around 3 feet high.

I think Asteraceae member. 
Please check it for Erigeron (=Conyza) bonariensis.

To me it looks different from images at Conyza bonariensis

Pl. also check with comparative images at Blumea


I think more closer to images at Conyza sumatrensis (Retz.) E. Walker
It looks like Conyza canadensis a roadside weed in many cities.
In the absence of photographs of  the fully opened flowers it is difficult to arrive at a decision by me.
I rechecked again, all posts in efi on Conyza canadensis are from Himalayas. Keys are also provided here. I still feel it is more closer to Conyza sumatrensis. May I request ... to have a re-look pl.
May be, when all the details, and description is insufficient there is a chance for mis identification between closely related species. I am not above that.
Thanks ... for all the help in identifying this plant.. Will try to get more pictures when I revisit the place.
https://08511630493324166816.googlegroups.com/attach/7a8c3d63df262/DSC_0684.JPG?part=0.4&view=1&vt=ANaJVrFiCMrK9p7iHj77hKBSRXNZ4_t64Codvt1_zr93xXKhZRh2QMAmKqcAA6M9bh6LJu5pKEQ5F3aQyexNoqLRDngbIMCnBk5qbyuwmCeSfoFVXLSjz2Y
https://08511630493324166816.googlegroups.com/attach/7a8c3d63df262/DSC_0681.JPG?part=0.3&view=1&vt=ANaJVrGAKSpOewaa3UXojAEMhz28y6WJYmmxzBUm_i212FooUxui1x48KbqdckyFXB4YVkTmXIqBe31tcy-B0DHTZqEYLn7877s_xsVShXf6N03vHXp7fO0
 
https://08511630493324166816.googlegroups.com/attach/7a8c3d63df262/CSC_0239.JPG?part=0.1&view=1&vt=ANaJVrGOhlUDtcE8IR6nfy4Veip4VHrhmUmVT-RuvprlAZ_zv-b4JlTnYVHR5gVgfKi5sJqg9Eu70D6JuwuHbIIhcNVxqZmBYCsBzd97c6yUGiWtPLiWT8U
https://08511630493324166816.googlegroups.com/attach/7a8c3d63df262/DSC_0961.JPG?part=0.6&view=1&vt=ANaJVrFVE3CwMU3_mywnWrdYtLmlUF5anNkQOrCofmgHr06SPS5c7o0j6N7YhWz11fFaysdoeYWHllPUFWUcah_SNgt17e_FL0idIH_QDguOvx02SJDx1Uo
https://08511630493324166816.googlegroups.com/attach/7a8c3d63df262/DSC_0685.JPG?part=0.5&view=1&vt=ANaJVrEKRpTqcLndnxkNcJ1M2SaWgaRh1RA9ms_Lb76V5Ikig-w-0DJWOeIIBl_UAbKkB-31_XKWkA5fmkgDpPtqYz1KSSS4IJS1IPK82FtGLpc2EYj4Za4
https://08511630493324166816.googlegroups.com/attach/7a8c3d63df262/DSC_0679.JPG?part=0.2&view=1&vt=ANaJVrGyYtsKgmW7Py_fTquD3hwaSDCUZ0ppfk6q8uXmJxKQ6L9wQuSRfurRKDe_-HYk6TzeoH2fn_sGCNNbXNlup5UNe4iAhDxqenqX1FH-KpysaCsttrs

SK493 01 MAY-2017:ID : 6 posts by 3 authors. Attachments (6)
Location: Soureni, Mirik, India
Date: 21 April 2017
Altitude: 4200 ft. 

Conyza? Pl.  Check the spelling. 
Please compare with Conyza sumatrensis in efi.
Erigeron canadensis L. (accepted name) ?? Conyza canadensis (L.) Cronq. (synonym)

Erigeron sumatrensis Retz. (accepted name) Conyza sumatrensis (Retz.) E.H. Walker (synonym)



References:
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