Right
Answer:
You
can tell this is Perennial sowthistle because It has large leaves
at its base which have soft spines on their margins.
The inflorescence is very pronounced and contains easily
identifiable, deep yellow flowers. If the stems of this species
are cut open they will exude a milky white sap much like
that of milkweed. The seeds are brownish, slender and will
be somewhat flattened. Each seed will have 5-7 ridges running
its length. Quite often the seeds will be found with a
small tuft of hair attached.