Rancho San Antonio County Park and Open Space Preserve

Rancho San Antonio County Park and Open Space Preserve is one of the most popular recreational areas in Santa Clara County. This 3,988-acre Open Space Preserve, combined with the adjoining 165-acre County Park, offers visitors a unique experience with a sampling of diverse environments, ...more ↓

All 406

Greater Periwinkle ¹
Vinca major

Field Madder ²
Sherardia arvensis

Catchweed Bedstraw ³
Galium aparine

Muhlenberg's centaury ⁴
Zeltnera muehlenbergii

California Buckwheat ⁵
Eriogonum fasciculatum

leafy California buckwheat ⁶
Eriogonum fasciculatum foliolosum

Naked Buckwheat ⁷
Eriogonum nudum

Common Chickweed ²
Stellaria media

Cardinal Catchfly ⁸
Silene laciniata

North Californian Indian pink ⁹
Silene laciniata californica

Miner's Lettuce ¹⁰
Claytonia perfoliata

grassy tarweed ⁷
Madia gracilis

coast tarweed ¹¹
Madia sativa

Hayfield Tarweed ¹¹
Hemizonia congesta

Yellow Starthistle ¹²
Centaurea solstitialis

Pearly Everlasting ¹³
Anaphalis margaritacea

California Cudweed ¹⁴
Pseudognaphalium californicum

Golden Yarrow ¹⁵
Eriophyllum confertiflorum

Common Yarrow ¹⁶
Achillea millefolium

Pineapple Weed ¹⁷
Matricaria discoidea

California Sagebrush ¹⁸
Artemisia californica

California Mugwort ¹⁹
Artemisia douglasiana

velvety goldenrod ²⁰
Solidago velutina

California goldenrod ⁷
Solidago velutina californica

Coyote Brush ²¹
Baccharis pilularis

Telegraphweed ²²
Heterotheca grandiflora

Q-tips ²³
Micropus californicus

smooth mule-ears ⁷
Wyethia glabra

Cobwebby Thistle ²⁴
Cirsium occidentale

Bull Thistle ²⁵
Cirsium vulgare

Silverpuffs ⁹
Uropappus lindleyi

Milk Thistle ²⁶
Silybum marianum

Italian thistle ²⁷
Carduus pycnocephalus

slender woolly-marbles ²⁸
Psilocarphus tenellus

California Chicory ⁷
Rafinesquia californica

Long-beaked Stork's Bill ⁴
Erodium botrys

Redstem Filaree ²⁹
Erodium cicutarium

Dove's-foot crane's-bill ³⁰
Geranium molle

Pacific Poison Oak ³¹
Toxicodendron diversilobum

Peruvian peppertree ³²
Schinus molle

Bigleaf Maple ³³
Acer macrophyllum

California Buckeye ³⁴
Aesculus californica

Red Ribbons ³⁵
Clarkia concinna

Santa Clara red ribbons ²⁸
Clarkia concinna automixa

Winecup Clarkia ²⁸
Clarkia purpurea

ruby chalice clarkia ⁷
Clarkia rubicunda

Elegant Clarkia ⁷
Clarkia unguiculata

Tasmanian Blue Gum ³⁶
Eucalyptus globulus

Coast Live Oak ⁷
Quercus agrifolia

California scrub oak ³⁷
Quercus berberidifolia

blue oak ³⁸
Quercus douglasii

California Black Oak ³³
Quercus kelloggii

Valley Oak ⁴
Quercus lobata

California Bee Plant ²²
Scrophularia californica

denseflower Indian paintbrush ³⁹
Castilleja densiflora

Purple Owl's Clover ⁴⁰
Castilleja exserta

Woolly Indian Paintbrush ⁷
Castilleja foliolosa

Indian Warrior ⁴¹
Pedicularis densiflora

Olive ⁴²
Olea europaea

California Hedge Nettle ⁹
Stachys bullata

Coyote Mint ⁷
Monardella villosa

yerba buena ⁷
Clinopodium douglasii

blue skullcap ⁴⁰
Scutellaria tuberosa

White Horehound ⁴³
Marrubium vulgare

California Pitcher Sage ⁷
Lepechinia calycina

Western Vervain ⁷
Verbena lasiostachys

Purple Chinese Houses ⁴¹
Collinsia heterophylla

wiry snapdragon ¹⁴
Antirrhinum vexillocalyculatum

Dot-seed Plantain ⁷
Plantago erecta

common field-speedwell ⁴⁴
Veronica persica

Orange Bush Monkeyflower ⁴⁵
Mimulus aurantiacus

California Poppy ⁴⁶
Eschscholzia californica

windpoppy ⁹
Papaver heterophyllum

golden eardrops ⁷
Ehrendorferia chrysantha

California buttercup ⁴⁷
Ranunculus californicus

Western Columbine ³⁵
Aquilegia formosa

California larkspur ⁷
Delphinium californicum

Pipestem Clematis ⁴¹
Clematis lasiantha

bluewitch nightshade ⁹
Solanum umbelliferum

Common Snowberry ³⁵
Symphoricarpos albus

Pink Honeysuckle ⁷
Lonicera hispidula

black elderberry ²⁹
Sambucus nigra

Blue Elderberry ²¹
Sambucus nigra caerulea

Common Cowparsnip
Heracleum maximum

Purple Sanicle ⁷
Sanicula bipinnatifida

Pacific Sanicle ⁴⁸
Sanicula crassicaulis

California Bay ⁴⁹
Umbellularia californica

Bay laurel ⁵⁰
Laurus nobilis

Caper spurge ⁵¹
Euphorbia lathyris

Pacific Hound's Tongue ⁵²
Cynoglossum grande

Rusty Popcornflower ⁵³
Plagiobothrys nothofulvus

Rancher's fiddleneck ⁵⁴
Amsinckia intermedia

Fiesta Flower ⁵⁵
Pholistoma auritum

Yerba Santa ⁷
Eriodictyon californicum

coast silk tassel ⁵⁶
Garrya elliptica

western sycamore ⁵⁷
Platanus racemosa

Milkmaids ⁴⁰
Cardamine californica

Shortpod Mustard ⁵⁸
Hirschfeldia incana

Wild Mustard ⁴⁴
Sinapis arvensis

Watercress ⁸
Nasturtium officinale

Edited by Anne Parsons and sea-kangaroo, some rights reserved (CC BY-SA)

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Rancho San Antonio County Park and Open Space Preserve

Greater Periwinkle 1 Vinca major

Field Madder 2 Sherardia arvensis

Catchweed Bedstraw 3 Galium aparine

Muhlenberg's centaury 4 Zeltnera muehlenbergii

California Buckwheat 5 Eriogonum fasciculatum

leafy California buckwheat 6 Eriogonum fasciculatum foliolosum

Naked Buckwheat 7 Eriogonum nudum

Common Chickweed 2 Stellaria media

Cardinal Catchfly 8 Silene laciniata

North Californian Indian pink 9 Silene laciniata californica

Miner's Lettuce 10 Claytonia perfoliata

grassy tarweed 7 Madia gracilis

coast tarweed 11 Madia sativa

Hayfield Tarweed 11 Hemizonia congesta

Yellow Starthistle 12 Centaurea solstitialis

Pearly Everlasting 13 Anaphalis margaritacea

California Cudweed 14 Pseudognaphalium californicum

Golden Yarrow 15 Eriophyllum confertiflorum

Common Yarrow 16 Achillea millefolium

Pineapple Weed 17 Matricaria discoidea

California Sagebrush 18 Artemisia californica

California Mugwort 19 Artemisia douglasiana

velvety goldenrod 20 Solidago velutina

California goldenrod 7 Solidago velutina californica

Coyote Brush 21 Baccharis pilularis

Telegraphweed 22 Heterotheca grandiflora

Q-tips 23 Micropus californicus

smooth mule-ears 7 Wyethia glabra

Cobwebby Thistle 24 Cirsium occidentale

Bull Thistle 25 Cirsium vulgare

Silverpuffs 9 Uropappus lindleyi

Milk Thistle 26 Silybum marianum

Italian thistle 27 Carduus pycnocephalus

slender woolly-marbles 28 Psilocarphus tenellus

California Chicory 7 Rafinesquia californica

Long-beaked Stork's Bill 4 Erodium botrys

Redstem Filaree 29 Erodium cicutarium

Dove's-foot crane's-bill 30 Geranium molle

Pacific Poison Oak 31 Toxicodendron diversilobum

Peruvian peppertree 32 Schinus molle

Bigleaf Maple 33 Acer macrophyllum

California Buckeye 34 Aesculus californica

Red Ribbons 35 Clarkia concinna

Santa Clara red ribbons 28 Clarkia concinna automixa

Winecup Clarkia 28 Clarkia purpurea

ruby chalice clarkia 7 Clarkia rubicunda

Elegant Clarkia 7 Clarkia unguiculata

Tasmanian Blue Gum 36 Eucalyptus globulus

Coast Live Oak 7 Quercus agrifolia

California scrub oak 37 Quercus berberidifolia

blue oak 38 Quercus douglasii

California Black Oak 33 Quercus kelloggii

Valley Oak 4 Quercus lobata

California Bee Plant 22 Scrophularia californica

denseflower Indian paintbrush 39 Castilleja densiflora

Purple Owl's Clover 40 Castilleja exserta

Woolly Indian Paintbrush 7 Castilleja foliolosa

Indian Warrior 41 Pedicularis densiflora

Olive 42 Olea europaea

California Hedge Nettle 9 Stachys bullata

Coyote Mint 7 Monardella villosa

yerba buena 7 Clinopodium douglasii

blue skullcap 40 Scutellaria tuberosa

White Horehound 43 Marrubium vulgare

California Pitcher Sage 7 Lepechinia calycina

Western Vervain 7 Verbena lasiostachys

Purple Chinese Houses 41 Collinsia heterophylla

wiry snapdragon 14 Antirrhinum vexillocalyculatum

Dot-seed Plantain 7 Plantago erecta

common field-speedwell 44 Veronica persica

Orange Bush Monkeyflower 45 Mimulus aurantiacus

California Poppy 46 Eschscholzia californica

windpoppy 9 Papaver heterophyllum

golden eardrops 7 Ehrendorferia chrysantha

California buttercup 47 Ranunculus californicus

Western Columbine 35 Aquilegia formosa

California larkspur 7 Delphinium californicum

Pipestem Clematis 41 Clematis lasiantha

bluewitch nightshade 9 Solanum umbelliferum