Black mustard (Brassica nigra)

Mustard family -- Brassicaceae

September 1, 2015. Moonridge Trail

Seed head

Invasive

Russian thistle (Salsola tragus)

Goosefoot family -- Chenopodiaceae 

September 1, 2015. Moonridge Trail

Invasive

Tocalote (Centaurea melitensis)

Composite or sunflower family -- Asteraceae

August 9, 2015. Upper Santa Rosa Trail

Seed head

Invasive

White horehound (Marrubium vulgare)
Mint family -- Lamiaceae
August 9, 2015. Upper Santa Rosa Trail

Invasive

Seed head

Fennel, sweet fennel, biscuit root (Foeniculum vulgare)

Carrot or parsley family -- Apiaceae

August 9, 2015.  Upper Santa Rosa Trail

Invasive

Prickly lettuce (Lactuca serriola)
Composite or sunflower family -- Asteraceae
August 9, 2015. Upper Santa Rosa Trail
Invasive

Curley dock (Rumex crispus)

Buckwheat family -- Polygonaceae

August 9, 2015. Upper Santa Rosa Trail

Invasive

Coastal heron's bill (Erodium cicutarium)

Geranium family -- Geraniaceae

August 9, 2015.  Upper Santa Rosa Trail

Black mustard (Brassica nigra)

Mustard family -- Brassicaceae

August 9, 2015. Upper Santa Rosa Trail

Color: Yellow

Seed head

Invasive

Curley dock (Rumex crispus)

Buckwheat family -- Polygonaceae

July 8, 2015. Upper Santa Rosa Trail

Invasive

White horehound (Marrubium vulgare)
Mint family -- Lamiaceae
July 8, 2015. Upper Santa Rosa Trail

Invasive

Seed head

Italian thistle (Carduus pycnocephalus)

Composite or sunflower family -- Asteraceae

July 8, 2015. Upper Santa Rosa Trail

Seed head

Invasive

Foxtail brome or red brome (Bromus madritensis)
Grass family -- Poaceae
July 8, 2015. Upper Santa Rosa Trail

Grass seed

Invasive

Milk thistle (Silybum marianum)

Composite or sunflower family -- Asteraceae

July 8, 2015.  Upper Santa Rosa Trail

Seed head

Seeds

Invasive

Ripgut brome (Bromus diandrus)

Grass family -- Poaceae

July 8, 2015. Stagecoach Bluff Trail

Invasive

Grass seed

Russian thistle (Salsola tragus)

Goosefoot family -- Chenopodiaceae 

July 8, 2015. Upper Santa Rosa Trail

Invasive

Prickly lettuce (Lactuca serriola)
Composite or sunflower family -- Asteraceae
July 8, 2015. Upper Santa Rosa Trail
Color: Yellow
Invasive

Wild oat (Avena fatua)

Grass family -- Poaceae

July 8, 2015. Upper Santa Rosa Trail

Grass seed

Invasive

Black mustard (Brassica nigra)

Mustard family -- Brassicaceae

July 8, 2015. Upper Santa Rosa Trail

Seed head

Invasive

c

Prickly lettuce (Lactuca serriola)
Composite or sunflower family -- Asteraceae
July 5, 2015. Wildwood Canyon Trail
Color: Yellow
Invasive