prickly sow-thistle
ough milk thistle
spiny sowthistle
sharp-fringed sow thistle
sonchus asper latin

Sonchus asper (Sharp-fringed Sow Thistle, Prickly Sow Thistle, Spiny Sow Thistle, or Spiny-leaved Sow Thistle) is an annual plant with spiny leaves and yellow flowers resembling those of the dandelion.

Sonchus asper (I)

Prickly sow-thistle (Sonchus asper)