Name that weed

[txfishing]

Since I've owned my property (5 years) this yellow flowering weed comes up speratically throughout my pasture during the month of March. I've sprayed it with 2-4D the last two years. There are some pasture nearby completly covered with this stuff during this time of year. Any idea what it's called. My cows don't mess with it either.

Thanks

 

[dj]

Try looking here.
http://uvalde.tamu.edu/herbarium/yellow.htm

 

[BC]

Look at this link. It closely matches the plant you showed.

http://texnat.tamu.edu/CMPLANTS/toxic/A ... undsel.pdf

 

[txfishing]

Thats it!

Thanks