Higher 1/ Plants of Keizer Rapids Park Wooded Area Keizer, OR

I. Pteridophytes (Ferns & Their Relatives) Madia sativa, Coast Tarweed Matricaria discoidea [matricarioides], Pineapple Weed * Senecio jacobaea, Tansy Ragwort Dennstaedtiaceae, Bracken Family * Sonchus asper, Prickly Sow Thistle Pteridium aquilinum var. pubescens, Bracken Fern Symphotrichum [Aster] subspicatum, Douglas’ Aster

* Tanacetum vulgare, Common Tansy Dryopteridaceae, Wood Fern Family Xanthium strumarium var. canadense, Common Cocklebur Polystichum munitum, Western Sword Fern

Berberidaceae, Barberry Family Equisetaceae, Horsetail Family Mahonia [Berberis] aquifolium, Oregon Grape Equisetum sp., Horsetail Betulaceae, Birch Family Polypodiaceae, Polypody Family Alnus rubra, Red Alder Polypodium glycyrrhiza, Licorice Fern * Corylus avellana, European Filbert [? C. cornuta var. californica, Western Hazelnut]

II. Gymnosperms (Conifers) Brassicaceae, Mustard Family * Arabidopsis thaliana, Common Wall Cress Pinaceae, Pine Family * Brassica rapa [campestris], Field Mustard, Rape Abies grandis, Grand Fir * B. sp., Mustard Pseudotsuga menziesii var. menziesii, Douglas Fir Cardamine angulata, Angled Bittercress Tsuga heterophylla, Western Hemlock C. californica, Milk Maids, Toothwort [? C. nuttallii var. nuttallii, Slender Toothwort, Spring Beauty] [? * C. hirsuta, Hairy Bittercress] Taxaceae, Yew Family C. oligosperma var. oligosperma, Little Western Bittercress Taxus brevifolia, Pacific Yew, Western Yew Draba verna, Spring Whitlow Grass * Hesperis matronalis, Dame’s Rocket, Damask Violet * Raphanus raphanistrum, Jointed Charlock III. Dicotyledons (Broadleaved Plants) * R. sativus, Wild Radish * Rorippa sp., Yellowcress Aceraceae, Maple Family * Sisymbrium officinale, Hedge Mustard Acer macrophyllum, Oregon Bigleaf Maple * A. rubrum, Red Maple Caprifoliaceae, Honeysuckle Family Sambucus mexicana, Blue Elderberry Amaranthaceae, Amaranth Family Symphoricarpos albus var. laevigata, Common Snowberry Amaranthus californicus, California Amaranth Caryophyllaceae, Pink Family Anacardiaceae, Sumac Family * Cerastium glomeratum, Sticky Chickweed Toxicodendron diversilobum, Poison Oak * Saponaria officinalis, Bouncing Bet, Soapwort * Silene sp., Campion, Catchfly Apiaceae, Parsley Family * Conium maculatum, Poison Hemlock Convolvulaceae, Morning Glory Family * Daucus carota, Queen Anne’s Lace, Wild Carrot [? Calystegia atriplicifolia ssp. atriplicifolia (Convolvulus nyctagineus), Heracleum lanatum, Cow Parsnip Night Blooming Morning Glory] Osmorhiza berteroi [chilense], Sweet Cicely * Convolvulus arvensis, Field Bindweed, Wild Morningglory

Apocynaceae, Dogbane Family Cornaceae, Dogwood Family * Vinca major, Greater Periwinkle, Big Periwinkle Cornus nuttallii, Pacific Dogwood, Western Flowering Dogwood

Aquifoliaceae, Holly Family Cucurbitaceae, Cucumber, or Gourd, Family * Ilex aquifolium, English Holly Marah oreganus, Oregon Bigroot, Old Man-in-the-Ground

Araliaceae, Ginseng Family Ericaceae, Heath Family * Hedera helix, English Ivy Arbutus menziesii, Pacific Madrone

Asteraceae, Aster, Daisy, or Sunflower Family Fabaceae, Pea Family * Anthemis arvensis, Field Chamomile * Cytisus scoparius, Scots Broom * Arctium minor, Common Burdock Lupinus bicolor, Miniature Lupine, Two Color Lupine Artemisia douglasiana, Douglas Sagewort, Douglas Mugwort L. rivularis, Riverbank Lupine * Centaurea Xpratensis, Meadow Knapweed * Robinia pseudoacacia, Black Locust * Cichorium intybus, Chicory * Trifolium arvense, Hare’s Foot, Rabbitfoot Clover * Cirsium arvense, Canada Thistle * T. dubium, Least Hop Clover * C. vulgare, Bull Thistle * T. repens, White Dutch Clover Eriophyllum lanatum var. lanatum, Woolly Sunflower, Oregon Sunshine Vicia americana var. americana, American Vetch Gnaphalium palustre, Lowland Cudweed * V. cracca, Bird Vetch, Cat Peas Heterotheca [Chrysopsis] oregana, Oregon Goldenaster * V. sativa var. angustifolia, Common Vetch, Tare * Lactuca serriola, Prickly Lettuce * V. tetrasperma, Smooth Tare, Slender Vetch * Lapsana communis, Nipplewort * Leucanthemum vulgare [Chrysanthemum leuc.], Oxeye Daisy Keizer Rapids Park, page 2. Thalictrum polycarpum, Tall Western Meadowrue

Geraniaceae, Geranium Family Rhamnaceae, Buckthorn Family * Erodium cicutarium, Filaree Rhamnus purshiana, Cascara, Chittam * Geranium molle, Dovefoot Geranium * G. pusillum, Small Flowered Geranium Rosaceae, Rose Family Amelanchier alnifolia var. semiintegrifolia, Western Serviceberry Grossulariaceae, Currant Family * Cotoneaster franchettii, Franchet Cotoneaster Ribes divaricatum var. divaricatum, Straggly Gooseberry * Crataegus monogyna, English Hawthorn C. suksdorfii, Suksdorf’s Hawthorn Hydrangeaceae, Hydrangea Family [? Crataegus species/hybrid] Philadelphus lewisii, Lewis’ Mockorange * Malus sp., Flowering Crabapple Oemleria cerasiformis, Indian Plum Hydrophyllaceae, Waterleaf Family * Prunus laurocerasus, English Laurel Hydrophyllum tenuipes, Pacific Waterleaf * Prunus sp., Cherry Nemophila parviflora var. parviflora, Small Flowered Nemophila * Rosa canina, Dog Rose Phacelia nemoralis ssp. oregonensis, Woodland Phacelia * Rubus armeniacus, Himalayan Blackberry R. ursinus, Pacific Blackberry Hypericaceae, St.Johnswort Family * Hypericum perforatum, Goatweed, Klamathweed Rubiaceae, Madder Family Galium aparine, Common Bedstraw, Stickywilly, Cleavers Juglandaceae, Walnut Family G. triflorum, Fragrant Bedstraw

* Juglans sp., Walnut Salicaceae, Willow Family Populus trichocarpa, Black Cottonwood Lamiaceae, Mint Family Salix sessilifolia, Northwest Sandbar Willow, Soft Leaved Willow * Lamium purpureum, Red Dead Nettle, Henbit

* Melissa officinalis, Lemon Balm, Garden Balm * Mentha Xpiperita ssp. piperita, Peppermint Saxifragaceae, Saxifrage Family Prunella vulgaris var. lanceolata, Heal All, Self Heal Tellima grandiflora, Fringecup Stachys cooleyae, Cooley’s Hedgenettle S. rigida, Rigid Betony, Rigid Hedgenettle Scrophulariaceae, Figwort Family * Verbascum blattaria, Moth Mullein Lythraceae, Loosestrife Family * V. thapsus, Common Mullein, Flannel Mullein 2/ * Lythrum salicaria, Purple Loosestrife Solanaceae, Nightshade Family Oleaceae, Olive Family * Solanum dulcamara, Bittersweet Nightshade Fraxinus latifolia, Oregon Ash * S. nigrum, Black Nightshade

Onagraceae, Evening Primrose Urticaceae, Nettle Family Circaea alpina ssp. pacifica, Enchanter’s Nightshade Urtica dioica ssp. gracilis, American Stinging Nettle Epilobium minutum, Small Flowered Willowherb * Ludwigia hexapetala, Primrose Willow Valerianaceae, Valerian Family * Oenothera biennis, Common Evening Primrose * Valerianella locusta, European Corn Salad, Lamb’s Lettuce

Oxalidaceae, Oxalis Family Violaceae, Violet Family Oxalis suksdorfii, Western Yellow Oxalis Viola glabella, Stream Violet, Pioneer Violet

Papaveraceae, Poppy Family IV. Monocotyledons (Plants with Parallel Veined Leaves) Eschscholtzia californica, Californica Poppy Alismataceae, Water Plantain Family Plantaginaceae, Plantain Family Alisma triviale [plantago-aquatica], Northern Water Plantain * Plantago lanceolata, Buckhorn Plantain, English Plantain Sagittaria latifolia, Wapato, Broadleaf Arrowhead * P. major, Common Plantain Araceae, Arum Family Polemoniaceae, Phlox Family * Arum italicum, Italian Arum, Italian Lords and Ladies Gilia capitata ssp. capitata, Bluefield Gilia Cyperaceae, Sedge Family Polygonaceae, Knotweed Family, Buckwheat Family Carex obnupta, Slough Sedge Polygonum aviculare ssp. depressum, Common Knotweed Polygonum sp., Knotweed Iridaceae, Iris Family * Rumex acetosella, Sheep Sorrel, Sour Dock * Iris pseudacorus, Yellow Flag, Yellow Water Iris * R. crispus, Curly Dock [? Rumex sp., Dock] Liliaceae, Lily Family Allium amplectens, Slim Leaf Onion Portulacaceae, Purslane Family * A. vineale, Wild Garlic, Field Garlic, Crow Garlic Claytonia [Montia] perfoliata ssp. perfoliata, Miner’s Lettuce Brodiaea elegans ssp. hooveri, Elegant Brodiaea C. [M.] sibirica, Candyflower Camassia leichtlinii var. suksdorfii, Leichtlin’s Camas Prosartes [? hookeri, Hooker’s Fairy Bell] Primulaceae, Primrose Family Trillium albidum, Giant Trillium, White Toadshade * Cyclamen hederifolium, Hardy Cyclamen * T. chloropetalum var. giganteum, Giant Red Trillium * Lysimachia nummularia, Creeping Jenny, Moneywort [? T. Xhybridum (T. albidum x T. parviflorum), Hybrid Trillium] T. ovatum ssp. ovatum, Western White Trillium Ranunculaceae, Buttercup Family 3/ T. parviflorum, Smallflowered Trillium Clematis ligusticifolia, Western Clematis Triteleia [Brodiaea] hyacinthina, Hyacinth Brodiaea 2/ * Ranunculus ficaria, Lesser Celandine Keizer Rapids Park, page 3.

Poaceae, Grass Family * Aira caryophyllea [elegans] var. capillaris, Elegant Hairgrass * Arrhenatherum elatius ssp., Tall Oatgrass * Avena fatua, Wild Oats * A. sativa, Common Oats, Cultivated Oats Bromus sitchensis, Alaska Brome * Bromus tectorum, Cheatgrass, Downy Brome * Cynosurus echinatus, Hedgehog Dogtail * Dactylis glomerata, Orchid Grass * Digitaria ischaemum, Smooth Crabgrass [*?] Festuca spp., Fescue * Holcus lanatus, Common Velvetgrass * Lolium multiflorum, Annual Ryegrass, Italian Ryegrass * Phalaris arundinacea var. arundinacea, Reed Canary Grass * Phleum pratense, Cultivated Timothy * Poa pratensis ssp. pratensis, Kentucky Bluegrass . Typhaceae, Cattail Family Typha latifolia, Common Cattail Key:

* = introduced species [?] = uncertain identification, nomenclature, or presence

[name] = synonym; often now an obsolete name 1/ = higher plants do not include lichens, liverworts, mosses, or fungi (mushrooms) 2/ = Lythrum salicaria is highly invasive, especially in wetlands; a high priority noxious weed in Oregon; Ranunculus ficaria is also an Oregon noxious weed and very invasive. 3/ = Oregon Flora Project does not recognize Trillium

parviflorum as separate species but as T. albidum; Flora of North America recognizes T. parviflorum as a separate species. Plants highlighted yellow = native trees Plants highlighted green = native shrubs Plants highlighted blue = native vines

Keizer Rapids Park is at the end of Chemawa Road N, Keizer,

Oregon, Township 7S, Range 3W, portions of NE ¼ and SE ¼ of Section 4, all south of Chemawa Road, and adjoining Willamette River on the south. Land along the River is low and subject to annual overflow. Most of the Park is on the first bench above the River and subject only to occasional flooding; the bench is heavily treed. Prepared by Wilbur L. Bluhm, with assistance of Ed Myers, both of Willamette Valley Chapter, Native Plant Society of

Oregon. May 2009. Updated August 2009, February 2010, March 2010, August 2010, August 2012. Organization and Nomenclature are by Oregon Flora Project and Oregon Plant Atlas, Herbarium, Department of Botany and Plant Pathology, Oregon State Univers