Forbs & Woody PlantFORBS
Desert Merigold Perennial NativeLeafy Spurge Perennial Introduced & NoxiousTailcup Lupine Perennial NativeTall Larkspur Perennial NativeSpotted Knapweed Perennial Introduced & NoxiousWestern Yarrow Perennial Native
WOODY PLANTS
Big Sagebrush Perennial NativeCoyote Willow Perennial NativeCreosote Perennial NativeDeerbrush Perennial NativeHoney Mesquite Perennial NativeJuniper Perennial NativeSalt Cedar Perennial Introduced & NoxiousShadscale Saltbrush Perennial NativeWinterfat Perennial Native
Hairy Leaves
Mostly Basal
Leaves
Desert Marigold• Perennial• Native
Composite flower with Disk flowers and Ray flowers
Page from North American Wildland Plants by Stubbendieck, Hatch and Landholt
Desert Marigold• Desert wildflower• High ornamental value
Composite flower with Disk flowers and Ray flowers
High ornamental value
Leafy Spurge• Introduced• Perennial
University of Idaho Stillinger Herbarium (http://www.pnwherbaria.org)http://www.ag.ndsu.edu
Tailcup Lupine• Perennial• Native
Idaho Rangeland Resource Commission – drawing by Beverly Jaquish
Raceme seed heads
Palmate compound leaves
University of Idaho Stillinger Herbarium (http://www.pnwherbaria.org)
Tall Larkspur• Perennial• Native
Palmate dividedleaves
Raceme seed heads
University of Idaho Stillinger Herbarium (http://www.pnwherbaria.org
Tall Larkspur• Poisonous plant contains
alkaloids
** Poisonous – This plant contains a potent alkaloid. More animals die from this plant than from any other in North America
Purple flowers
Palmately divided leaves
Sheri Hagwood, BLM
Spotted Knapweed• Perennial• Introduced
K. Launchbaugh Jen Peterson
K.
La
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chb
au
gh
www.usu.edu/weeds/plant_species/weedspecies/spottedknap.html
Composit Seedhead with Disk flowers
Montana State University Herbarium (http://www.pnwherbaria.org
Spotted Knapweed• Noxious weed• Distinct “spots”
K. Launchbaugh
Jen Peterson
K.
La
un
chb
au
gh
K. Launchbaugh
Western Yarrow• Perennial• Native
Umbrella-shaped inflorescence
rhizomatous
University of Idaho Stillinger Herbarium (http://www.pnwherbaria.org
Western Yarrow• Widely range of occurrence• Medicinal Value
deeply divided fern-like leaves
Jennifer Peterson
Jennifer Peterson
J. Peterson
Big Sagebrush• Perennial• Native Leaves with
3-tipped ends
Montana State University Herbarium (http://www.pnwherbaria.org
Big Sagebrush• Several sagebrush obligate
species like Sage-grouse and Sage Thrashers
Narrow wedge-shaped leaves with 3 tips
Flowers have no petals; same color as leaves
Coyote (Sandbar) Willow• Perennial• Native
K. Launchbaugh
K. LaunchbaughK. Launchbaugh
University of Idaho Stillinger Herbarium (http://www.pnwherbaria.org
Creosote• Perennial• Native
K. Launchbaugh
Leaves with 2 leaflets
Field Book Of Western Wild Flowers, by Margaret Armstrong
Fuzzy Seeds
Utah Valley Sate College Herbarium (http://www.pnwherbaria.org
Creosote• Desert Shrub
Leaves with 2 leaflets
K. Launchbaugh
Yellow flowers withhairy seedsK. Launchbaugh
Deerbrush• Perennial• Native
Field Book Of Western Wild Flowers, by Margaret Armstrong
Leaves have 3 main veins
Western Washington University Herbarium (http://www.pnwherbaria.org
Honey Mesquite• Perennial• Native•
Pinately Compound Leaves Utah Valley State College Herbarium (http://www.pnwherbaria.org
Juniper• Perennial• Native
Leaves look like overlapping scales
University of Idaho Stillinger Herbarium (http://www.pnwherbaria.org
Saltcedar• Perennial• Introduced as ornamental
K. Launchbaugh
K. Launchbaugh
K. Launchbaugh
Utah Valley State College Herbarium (http://www.pnwherbaria.org
Saltcedar• Introduced as ornamental• Highly invasive riparian
plant.
K. Launchbaugh
K. Launchbaugh
K. Launchbaugh
Shadscale Saltbrush• Perennial• Native
Idaho Rangeland Resource Commission – drawing by Beverly Jaquish
Alternate leaves
University of Idaho Stillinger Herbarium (http://www.pnwherbaria.org
Shadscale Saltbrush• Major plant of
salt-desert shrub regionOvate or obovate leaves;
circular like a rounded scale
Winterfat• Perennial• Native
Suffrutescent (“half-shrub”) that dies back to woody base each season
Montana State University Herbarium (http://www.pnwherbaria.org