Clustered tarweed (Deinandra fasciculata)

Composite or sunflower family -- Asteraceae

July 8, 2015.  Upper Santa Rosa Trail

Color: Yellow

Native

Seed head

Coastal cholla (Cylindropuntia prolifera)
Cactus family -- Cactaceae
July 8, 2015. Upper Santa Rosa Trail
Native

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

Mexicali onion (Allium peninsulare)

Onion family -- Alliaceae

July 8, 2015.  Upper Santa Rosa Trail

Seed head

Native

July 8, 2015.  Upper Santa Rosa Trail

Grass

Question

July 8, 2015.  Upper Santa Rosa Trail

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Lemonade berry (Rhus integrifolia)

Cashew or sumac family -- Anacardiaceae

July 8, 2015.  Upper Santa Rosa Trail

Shrub

Native

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

Chaparral yucca (Hesperoyucca whipplei) 

Agave family -- Agavaceae

July 8, 2015. Upper Santa Rosa Trail

Seed head

Native

Coastal sage brush (Artemisia californica)

Composite or sunflower family -- Asteraceae

July 8, 2015.  Upper Santa Rosa Trail

Native

Shrub

Wild cucumber or man root (Marah macrocarpa)

Gourd family -- Cucurbitaceae

July 8, 2015. Moonridge Trail

Native

Seed pods

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

Giant wild rye (Elymus condensatus)

Grass family -- Poaceae

July 8, 2015.  Upper Santa Rosa Trail

Native

Ladies' tobacco or California everlasting (Pseudognaphalium californicum)

Composite or sunflower family -- Asteraceae

July 8, 2015. Upper Santa Rosa Trail

Color: White

Native

Thread stemmed fleabane (Erigeron foliosis)

Composite or sunflower family -- Asteraceae

July 8, 2015.  Upper Santa Rosa Trail

Color: White, Purple

Seed head

Native

Poison hemlock (Conium maculatum)

Carrot or parsley family -- Apiaceae

July 8, 2015.  Upper Santa Rosa Trail

Non-native