Aliso Creek, S Pacific Park, 10-28-11. © Ron Vanderhoff.

Prickly Sow-thistle

Sonchus asper, ssp. asper

Exotic species, native to Europe.

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Aliso Creek, S Pacific Park, 10-28-11. © Ron Vanderhoff.
Aliso Creek, S Pacific Park, 10-28-11. © Ron Vanderhoff.

Aliso Creek, S Pacific Park, 10-28-11. © Ron Vanderhoff.
Aliso Creek, S Pacific Park, 10-28-11. © Ron Vanderhoff.

O'Neil Reg Park, W ridge, 3-4-12. © Ron Vanderhoff.