Pleasanton Ridge Wildflowers A photographic guide to showy wildflowers of Pleasanton Ridge Regional Park Sorted by Flower Color Photographs by Wilde Legard Botanist, East Bay Regional Park District Revision: February 23, 2007
More than 2,000 species of native and naturalized plants grow wild in the San Francisco Bay Area. Most are very difficult to identify without the help of good illustrations. This is designed to be a simple, color photo guide to help you identify some of these plants. The selection of showy wildflowers displayed in this guide is by no means complete. The intent is to expand the quality and quantity of photos over time. The revision date is shown on the cover and on the header of each photo page. A comprehensive plant list for this area (including the many species not found in this publication) can be downloaded at the East Bay Regional Park District s wild plant download page at: http://www.ebparks.org. This guide is published electronically in Adobe Acrobat format to accommodate these planned updates. You have permission to freely download and distribute, and print this pdf for individual use. You are not allowed to sell the electronic or printed versions. In this version of the guide, only showy wildflowers are included. These wildflowers are sorted first by flower color, then by plant family (similar flower types), and finally by scientific name within each family. Under each photograph are four lines of information, based on the current standard wild plant reference for California: The Jepson Manual: Higher Plants of California, 1993. Common Name These non-standard names are based on Jepson and other local references. Scientific Name Scientific names revised since 1993 are NOT included in this edition. Origin & Longevity Native or Introduced. Annual, Biennial, Perennial, or a combination. Family Name The common plant family name according to Jepson. For readers that prefer a more comprehensive guide, sorted by scientific name, please download the wild plants version of this guide. Readers are encouraged to email any suggestions or corrections to wlegard@ebparks.org. All photographs are 2006 Wilde Legard, all rights reserved.
Wildflowers of Pleasanton Ridge Regional Park White Page 1 of 27 Nievitas Popcorn Flower Plagiobothrys nothofulvus Borage Family California Buckeye Aesculus californica Buckeye Family Buckbrush Ceanothus cuneatus var. cuneatus Buckthorn Family Common Yard Knotweed Polygonum arenastrum Buckwheat Family Western Virgin's Bower Clematis ligusticifolia Buttercup Family Poison Hemlock Conium maculatum Introduced Biennial Carrot Family Cow Parsnip Heracleum lanatum Carrot Family Scandix pecten-veneris Shepherd's Needle Carrot Family
Wildflowers of Pleasanton Ridge Regional Park White Page 2 of 27 Dense-flower Willowherb Epilobium densiflorum Evening Primrose Family Hillside Gooseberry Ribes californicum var. californicum Gooseberry Family Canyon Gooseberry Ribes menziesii Gooseberry Family Common / California Manroot Marah fabaceus Gourd Family Oregon / Coast Manroot Marah oreganus Gourd Family Blue Elderberry Sambucus mexicana Honeysuckle Family White Fairy Lantern Calochortus albus Lily Family Calochortus venustus White Butterfly Mariposa Lily Lily Family
Wildflowers of Pleasanton Ridge Regional Park White Page 3 of 27 Common Soap Plant Chlorogalum pomeridianum var. pomeridianum Lily Family Starry False Solomon's Seal Smilacina stellata Lily Family Common Star Lily Zigadenus fremontii Lily Family Hidden-flower Cheeseweed Malva parviflora Mallow Family Common Horehound Marrubium vulgare Mint Family Black Sage Salvia mellifera Mint Family Shortstem Morning Glory Calystegia subacaulis ssp. subacaulis Morning-Glory Family Convolvulus arvensis Field Bindweed Morning-Glory Family
Wildflowers of Pleasanton Ridge Regional Park White Page 4 of 27 Milkmaids Cardamine californica Mustard Family Slender Peren. Peppergrass Lepidium latifolium Mustard Family White Water Cress Rorippa nasturtium-aquaticum Mustard Family Hairy Fringepod Thysanocarpus curvipes Mustard Family Blue Gum Eucalyptus globulus Myrtle Family Thimble Clover Trifolium microdon Subterranean Clover Trifolium subterraneum Linanthus androsaceus Pinklobe Linanthus Phlox Family
Wildflowers of Pleasanton Ridge Regional Park White Page 5 of 27 Bicolor Linanthus Linanthus bicolor Phlox Family Mouse-ear Chickweed Cerastium glomeratum Pink Family Windmill Pink Silene gallica Pink Family Common Chickweed Stellaria media Pink Family California Dwarf Plantain Plantago erecta Plantain Family English Plantain Plantago lanceolata Plantain Family California Meconella Meconella californica Poppy Family Platystemon californicus Cream Cups Poppy Family
Wildflowers of Pleasanton Ridge Regional Park White Page 6 of 27 Common Miner's Lettuce Claytonia perfoliata ssp. perfoliata Purslane Family Woodland Strawberry Fragaria vesca Rose Family Creambush / Ocean Spray Holodiscus discolor Rose Family Oso Berry Oemleria cerasiformis Rose Family Pacific Ninebark Physocarpus capitatus Rose Family Western Chokecherry Prunus virginiana var. demissa Rose Family Himalayan Blackberry Rubus discolor Rose Family Rubus ursinus Native California Blackberry Rose Family
Wildflowers of Pleasanton Ridge Regional Park White Page 7 of 27 Small-flower Alumroot Heuchera micrantha Saxifrage Family Woodland Star Lithophragma affine Saxifrage Family California Saxifrage Saxifraga californica Saxifrage Family Valley Tassels Castilleja attenuata Snapdragon Family Yarrow Achillea millefolium Blow Wives Achyrachaena mollis Mayweed Anthemis cotula Baccharis douglasii Douglas/Salt Marsh Baccharis
Wildflowers of Pleasanton Ridge Regional Park White Page 8 of 27 California Everlasting Gnaphalium californicum Native Biennial Slender Cottonweed Micropus californicus var. californicus California White Chicory Rafinesquia californica Longhorn Plectritis Plectritis macrocera Valerian Family Variable-leaf Nemophila Nemophila heterophylla Waterleaf Family Wild Heliotrope Phacelia Phacelia distans Waterleaf Family Phacelia imbricata ssp. imbricata Rock Phacelia Waterleaf Family
Wildflowers of Pleasanton Ridge Regional Park Yellow Page 9 of 27 Common Fiddleneck Amsinckia menziesii var. intermedia Borage Family California Buttercup Ranunculus californicus Buttercup Family Prickleseed Buttercup Ranunculus muricatus Buttercup Family Puncture Vine Tribulus terrestris Caltrop Family Sweet Fennel Foeniculum vulgare Carrot Family Pacific Woodland Sanicle Sanicula crassicaulis Carrot Family Golden Eggs Suncup Camissonia ovata Evening Primrose Family Calochortus luteus Yellow Mariposa Lily Lily Family
Wildflowers of Pleasanton Ridge Regional Park Yellow Page 10 of 27 Erect-pod Winter Cress Barbarea orthoceras Mustard Family Black Mustard Brassica nigra Mustard Family Yellow Field Mustard Brassica rapa Mustard Family Yellow Charlock Sinapis arvensis Mustard Family Creeping Wood Sorrel Oxalis corniculata Oxalis Family Bermuda Buttercup Oxalis pes-caprae Oxalis Family French Broom Genista monspessulana Lotus corniculatus Bird's-foot Deerweed
Wildflowers of Pleasanton Ridge Regional Park Yellow Page 11 of 27 Deerweed Lotus scoparius var. scoparius California Lotus Lotus wrangelianus Yellow Bush Lupine Lupinus arboreus Gully Lupine Lupinus microcarpus var. densiflorus California Bur Clover Medicago polymorpha Shamrock Clover Trifolium dubium Bristly Linanthus Linanthus acicularis Phlox Family Kickxia elatine Sharp Point Fluvellin Snapdragon Family
Wildflowers of Pleasanton Ridge Regional Park Yellow Page 12 of 27 Bush Monkey Flower Mimulus aurantiacus Snapdragon Family Golden Monkey Flower Mimulus guttatus Snapdragon Family Yellow Johnny-tuck Triphysaria eriantha ssp. eriantha Snapdragon Family Common Woolly Mullein Verbascum thapsus Introduced Biennial Snapdragon Family Large-flower Native Dandelion Agoseris grandiflora Glue-seed Blennosperma nanum var. nanum Yellow Star Thistle Centaurea solstitialis Chamomilla suaveolens Pineapple Weed
Wildflowers of Pleasanton Ridge Regional Park Yellow Page 13 of 27 Interior Golden Bush Ericameria linearifolia Golden Yarrow Eriophyllum confertiflorum var. confertiflorum Western Goldenrod Euthamia occidentalis Rosilla Helenium puberulum Native Biennial Fitch Spikeweed Hemizonia fitchii Congdon Spikeweed Hemizonia parryi ssp. congdonii Smooth Cat's-ear Hypochaeris glabra Hypochaeris radicata Rough Cat's-ear
Wildflowers of Pleasanton Ridge Regional Park Yellow Page 14 of 27 Goldfields Lasthenia californica Common Tidytips Layia platyglossa Common / Coast Tarweed Madia sativa Bristly Ox-tongue Picris echioides -Biennial Common Groundsel Senecio vulgaris Prickly Sow Thistle Sonchus asper ssp. asper Common Sow Thistle Sonchus oleraceus Taraxacum officinale Common Dandelion Introduced Biennial-Perennial
Wildflowers of Pleasanton Ridge Regional Park Yellow Page 15 of 27 Narrow-leaf Mule's Ear Wyethia angustifolia Gray Mule's Ear Wyethia helenioides Viola pedunculata Johnny-Jump-Up / Wild Pansy Violet Family
Wildflowers of Pleasanton Ridge Regional Park Pink/Purple Page 16 of 27 Coast Larkspur Delphinium decorum ssp. decorum Buttercup Family Rattlesnake Weed Daucus pusillus Carrot Family Purple Sanicle Sanicula bipinnatifida Carrot Family Small Clarkia Clarkia affinis Evening Primrose Family Elegant Clarkia Clarkia unguiculata Evening Primrose Family Panicled / Weedy Willowherb Epilobium brachycarpum Evening Primrose Family Long-beaked Filaree Erodium botrys Geranium Family Erodium cicutarium Red-stem Filaree Geranium Family
Wildflowers of Pleasanton Ridge Regional Park Pink/Purple Page 17 of 27 White-stem Filaree Erodium moschatum Geranium Family Purpletip Cut-leaf Geranium Geranium dissectum Geranium Family Hairy Dove's Foot Geranium Geranium molle Geranium Family Chaparral Currant Ribes malvaceum var. malvaceum Gooseberry Family Hairy Vine Honeysuckle Lonicera hispidula var. vacillans Honeysuckle Family Pink / Serrated Onion Allium serra Lily Family Giant Trillium Trillium chloropetalum Lily Family Triteleia laxa Ithuriel's Spear Lily Family
Wildflowers of Pleasanton Ridge Regional Park Pink/Purple Page 18 of 27 Grass Poly Loosestrife Lythrum hyssopifolium -Perennial Loosestrife Family Blue Field Madder Sherardia arvensis Madder Family Bull Mallow Malva nicaeensis Mallow Family Common Checkerbloom Sidalcea malvaeflora ssp. malvaeflora Mallow Family Whorled/Narrow-leaf Milkweed Asclepias fascicularis Milkweed Family Pennyroyal Mentha pulegium Mint Family Common Rigid Hedge Nettle Stachys ajugoides var. rigida Mint Family Trichostema lanceolatum Vinegar Weed Mint Family
Wildflowers of Pleasanton Ridge Regional Park Pink/Purple Page 19 of 27 Wild Radish Raphanus sativus Mustard Family Pale Purple Pacific Pea Lathyrus vestitus var. vestitus Spanish Clover Lotus purshianus var. purshianus Blue Bush / Silver Lupine Lupinus albifrons var. albifrons Bay Area Silver Lupine Lupinus albifrons var. collinus California Tea Rupertia physodes Tree Clover Trifolium ciliolatum Trifolium gracilentum var. gracilentum Pinpoint Clover
Wildflowers of Pleasanton Ridge Regional Park Pink/Purple Page 20 of 27 Rose Clover Trifolium hirtum Small-head Clover Trifolium microcephalum Tomcat Clover Trifolium willdenovii Spring Vetch Vicia sativa ssp. sativa Winter Vetch Vicia villosa ssp. varia -Biennial Ruby Sand Spurry Spergularia rubra -Perennial Pink Family Mosquitobills Shooting Star Dodecatheon hendersonii Primrose Family Calandrinia ciliata Magenta Red Maids Purslane Family
Wildflowers of Pleasanton Ridge Regional Park Pink/Purple Page 21 of 27 California Wild Rose Rosa californica Rose Family Bellardia Bellardia trixago Snapdragon Family Chinese Houses Collinsia heterophylla Snapdragon Family Italian Thistle Carduus pycnocephalus Purple Star Thistle Centaurea calcitrapa -Biennial Bull Thistle Cirsium vulgare Introduced Biennial Cardoon / Artichoke Thistle Cynara cardunculus Gnaphalium luteo-album Weedy Cudweed
Wildflowers of Pleasanton Ridge Regional Park Pink/Purple Page 22 of 27 Common Lessingia Lessingia filaginifolia var. filaginifolia Milk Thistle Silybum marianum -Biennial Lemon Verbena Phyla nodiflora var. nodiflora Vervain Family Robust Vervain Verbena lasiostachys var. scabrida Vervain Family Phacelia californica California / Rock Phacelia Waterleaf Family
Wildflowers of Pleasanton Ridge Regional Park Blue Page 23 of 27 Large Hound's Tongue Cynoglossum grande Borage Family Greater Periwinkle Vinca major Dogbane Family Blue-eyed Grass Sisyrinchium bellum Iris Family Blue Dicks Dichelostemma capitatum ssp. capitatum Lily Family Ookow Dichelostemma congestum Lily Family Blue Witch Solanum umbelliferum Nightshade Family Miniature Dove Lupine Lupinus bicolor Lupinus nanus Douglas Sky Lupine
Wildflowers of Pleasanton Ridge Regional Park Blue Page 24 of 27 Arroyo Lupine Lupinus succulentus American Brooklime Speedwell Veronica americana Snapdragon Family Persian Speedwell Veronica persica Snapdragon Family Chicory Cichorium intybus Baby Blue-eyes Nemophila menziesii var. menziesii Waterleaf Family Pholistoma auritum var. auritum Blue Fiesta Flower Waterleaf Family
Wildflowers of Pleasanton Ridge Regional Park Red/Orange Page 25 of 27 Red / Crimson Columbine Aquilegia formosa Buttercup Family California Fuchsia Epilobium canum ssp. canum Evening Primrose Family California Poppy Eschscholzia californica Poppy Family Wind Poppy Stylomecon heterophylla Poppy Family Scarlet Pimpernel Anagallis arvensis Primrose Family Common Indian Paintbrush Castilleja affinis ssp. affinis Snapdragon Family Woolly Paintbrush Castilleja foliolosa Snapdragon Family Scrophularia californica ssp. californica California Figwort Snapdragon Family
Wildflowers of Pleasanton Ridge Regional Park Red/Orange Page 26 of 27 Cirsium occidentale var. venustum Venus / Cobweb Thistle Native Biennial
Wildflowers of Pleasanton Ridge Regional Park Green/Brown Page 27 of 27 Fritillaria affinis var. affinis Checker Lily Lily Family