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Oak woodlands

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Suggested Action
No results found
Use BMPs to control on private property
Report to Oregon Invasives Hotline
Light green cluster of winged seeds (samaras) of Norway Maple
Norway Maple
Acer platanoides
Invasive
Basal leaves resemble shape of a hound's tongue, multiple purple flowers arise on long stalks from center of base.
Pacific Houndstongue
Adelinia grandis
Native
Shoot and sprouts
Barbed Goat Grass
Aegilops triuncialis
Grass
Invasive
whole columbine plant with red flowers rising above foliage
Red Columbine
Aquilegia formosa
Native
whole madrone tree
Pacific Madrone
Arbutus menziesii
Native
Tight clusters of small dusky rose flowers and thin green leaves
Narrowleaf Milkweed
Asclepias fascicularis
Native
close up leaf edges
False Brome
Brachypodium sylvaticum
Grass
Invasive
purple upright funnel shaped flower
Elegant Brodiaea
Brodiaea elegans
Native
close up of California brome inflorescence seed heads ranging from tan to red
California Brome
Bromus carinatus
Grass
Native
a patch of Columbia brome in a forest understory with spikelets stalked
Columbia Brome
Bromus vulgaris
Grass
Native
Two spiky flower heads, on spiky stems, with yellow flower
Yellow Starthistle
Centaurea solstitialis
Invasive
a branch of hawthorn with lobed, mitten like leaves.
English Hawthorn
Crataegus monogyna
Invasive
Crataegus suksdorfii, a triploid form, Castlegar BC, Canada
Suksdorf’s Hawthorn
Crataegus x suksdorfii
Native
Spurge Laurel Daphne laureola Clusters of long slender green glossy leaves
Spurge Laurel
Daphne laureola
Invasive
northern wood fern foliage
Northern Wood Fern
Dryopteris expansa
Native
a small blue green bunch grass in a rounded mound
California Fescue
Festuca californica var. californica
Grass
Native
five-petalled white flowers with yellow centers and dark green leaves, low growing.
Mountain Strawberry
Fragaria virginiana
Native
small five-petaled pink flower above fern like foliage
Herb Robert
Geranium robertianum
Invasive
an oceansprayshrub in bloom
Oceanspray
Holodiscus discolor
Native
leaves and flower of waterleaf
Pacific waterleaf
Hydrophyllum tenuipes
Native
dangling small white flowers
Osoberry
Oemleria cerasiformis
Native
a characteristic carrot family umbel of small white flowers with an orange and black butterfly visitor
Oregon Yampah
Perideridea oregana
Native
umbel of small white carrot family flowers
Gairdner’s Yampah
Perideridia gairdneri
Native
close up of mock orange flowers, white, 4-petalled
Mock Orange
Philadelphus lewisii
Native
Pokeweed Phytolacca americana Several small blue/purple berries on red stalk
Pokeweed
Phytolacca americana
Invasive
a tall conifer
Willamette Valley Ponderosa Pine
Pinus ponderosa
Native
Oregon White Oak Quercus garryana Large, green glossy lobed leaves
Oregon White Oak
Quercus garryana
Native
a hillside with a black oak in foreground. classic rounded canopy
California Black Oak
Quercus kellogii
Native
Cascara Rhamnus purshiana Stem with large green oval opposite leaves and small red berries
Cascara
Rhamnus purshiana
Native
Cluster of red rowan berries and green pinnately compound, serrate leaves
European Mountain Ash
Sorbus aucuparia
Invasive
Female flowers of meadowrue with no petals and long magenta pistils.
Tall Western Meadowrue
Thalictrum polycarpum
Native
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