Delhi, India

Asteraceae herb forming a large clump with slender stems and barely 5-8 mm across yellow radiate heads, Sunnyvale, CA. Pl. help in ID

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Delhi, India

More photographs. Seems to be common along roadsides in California

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Dublin, CA(Zone 9a)

I never bothered to figure out exactly what it is, but I get a million of them in my yard every year so it's definitely a weed.

Delhi, India

Yes ecrane3, clearly a weed as I wrote, common along roadsides.

Bretten, Germany

Reminds me of Dittrichia graveolens/ stinking fleabane ?

http://www.guenther-blaich.de/pflseite.php?par=Dittrichia+graveolens&fm=pflfamla&abs=pflfmast&lan=x&wid=1900

Contra Costa County, CA(Zone 9b)

Hawkweeds, Heiracium are another possibility. Some are basal clumps, but some grow taller, and many have the squared off tips of the flowers that these pictures seem to show. Many have hairy leaves.

Prairieville, LA(Zone 9a)

Singhg, you may have already accessed this site, but i find it very helpful

http://www.ipm.ucdavis.edu/PMG/weeds_multi.html

and this one is a help with Asteraceae

http://www.wildflowers-and-weeds.com/Plant_Families/Asteraceae.htm

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