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Lewis and Clark


Lewis and Clark Expedition Discoveries and Tribes Encountered

Choose a category below:

Plants

Animals

Tribes
Plants that the expedition first recorded for science:

Common Name
Latin Name
Alkali Cordgrass
Spartina gracilis
American Silverberry
Elaeagnus commutata
Antelope Bitterbrush
Purshia tridentata
Aromatic Aster
Symphyotrichum oblongifolium
Arrowleaf Balsamroot
Balsamorhiza sagittata
Bear Grass
Xerophyllum tenax
Bessey's Locoweed
Oxytropis besseyi
Big Sagebrush
Artemisia tridentata
Bigleaf Maple
Acer macrophyllum
Bitterroot
Lewisia rediviva
Black Cottonwood
Populus balsamifera ssp. trichocarpa
Black Hawthorn
Crataegus douglasii
Blue Elderberry
Sambucus glauca
Blue Flax
Linum lewisii
Blue Huckleberry
Vaccinium membranaceum
Broom Snakeweed
Gutierrezia sarothrae
Buckbrush
Ceanothus sanguineus
California False Hellebore
Veratrum californicum
California Hazelnut
Corylus californica
California Rhododendron
Rhododendron macrophyllum
Camas
Camassia quamash
Canyon Gooseberry
Ribes menziesii
Cascade Oregon-Grape
Mahonia nervosa (Berberis nervosa)
Cat's Ears
Calochortus elegans
Chocolate Lily
Fritillaria affinis
Cluster Rose
Rosa pisocarpa
Clustered Elkweed
Frasera fastigiata
Common Snowberry
Symphoricarpos albus
Cous
Lomatium cous
Curlycup Gumweed
Grindelia squarrosa
Deerhorn Clarkia
Clarkia pulchella
Desertparsley
Lomatium triternatum
Disc Mayweed
Matricaria matricarioides
Dwarf Mountain Fleabane
Erigeron compositus
Eaton's Aster
Symphyotrichum eatonii
Edible Thistle
Cirsium edule
Engelmann's Spruce
Picea engelmannii
Evergreen Huckleberry
Vaccinium ovatum
False Buckthorn
Frangula purshiana
Fernleaf Desert-Parsley
Lomatium dissectum var. multifidum
Fernleaved Lousewort
Pedicularis cystopteridifolia
Four-Wing Saltbush
Atriplex canescens
Fragile Prickly-Pear
Opuntia fragilis
Gardner's Saltbush
Atriplex gardneri
Geyer's Onion
Allium geyeri
Giant Rye Grass
Elymus condensatus
Glacier Lily
Erythronium grandiflorum
Golden Currant
Ribes aureum
Golden Yarrow
Eriophyllum lanatum
Grand Fir
Abies grandis
Gray Rabbitbrush
Ericameria nauseosa
Greasewood
Sarcobatus vermiculatus
Great Blanketflower
Gaillardia aristata
Green Rabbitbrush
Chrysothamnus viscidiflorus
Hair Grass
Aira brevifolia
Hollyleaf Oregon-Grape
Mahonia aquifolium (Berberis aquifolium)
Idaho Fescue
Festuca idahoensis
Indian Breadroot
Pediomelum argophyllum
Indian Tobacco
Nicotiana quadrivalvis
Jacob's Ladder
Polemonium pulcherrimum
Lacy Tansyaster
Machaeranthera pinnatifida
Large Monkey Flower
Mimulus guttatus
Large-Flower Tritelia
Triteleia grandiflora
Large-Flowered Clammyweed
Polanisia trachysperma
Large-Head Clover
Trifolium macrocephalum
Leafy or Dwarf Thistle
Cirsium drummondii
Lemon Scurfpea
Psoralidium lanceolatum
Lewis Monkeyflower
Mimulus lewisii
Lewis's Mock Orange
Philadelphus lewisii
Lindley's Silverpuffs
Uropappus lindleyi
Linear-Leaved Phacelia
Phacelia linearis
Lodgepole Pine
Pinus contorta
Long-Leaved Mugwort
Artemisia longifolia
Long-Tailed Wild Ginger
Asarum caudatum
Lyall's Angelica
Angelica lyallii
Lyall's Nettle
Urtica lyallii
Maiden Blue-Eyed Mary
Collinsia parviflora var. grandiflora
Menzies' Larkspur
Delphinium menziesii
Missouri Milkvetch
Astragalus missouriensis
Mountain Balm
Ceanothus velutinus
Mountain Brome
Bromus marginatus
Mountain Death Camas
Zigadenus elegans
Mountain Hemlock
Tsuga mertensiana
Mountain Lady's Slipper
Cypripedium montanum
Narrow-Leaved Skullcap
Scutellaria angustifolia
Narrow-Petaled Stonecrop
Sedum stenopetalum
Narrowleaf Cottonwood
Populus angustifolia
Narrowleaf Mountain-Trumpet
Collomia linearis
Needle and Thread Grass
Stipa comata
Netleaf Hackberry
Celtis reticulata
Nootka Rose
Rosa nutkana
Nuttall's Toothwort
Cardamine nuttallii
Ocean Spray
Holodiscus discolor
Orange Honeysuckle
Lonicera ciliosa
Oregon Ash
Fraxinus latifolia
Oregon Boxleaf
Paxistima myrsinites
Oregon Crab Apple
Pyrus fusca
Oregon White Oak
Quercus garryana
Oregon Wood Sorrel
Oxalis oregana
Osage Orange Tree
Maclura pomifera
Owl's Clover
Orthocarpus tenuifolius
Pacific Blackberry
Rubus vitifolius
Pacific Dogwood
Cornus nuttallii
Pacific Madrone
Arbutus menziesii
Pacific Yew
Taxus brevifolia
Peach-Leaved Willow
Salix amygdaloides
Pestle Parsnip
Lomatium nudicaule
Ponderosa Pine
Pinus ponderosa
Prairie Apple
Pediomelum esculentum
Prairie Rose
Rosa arkansana
Prairie Smoke
Geum triflorum
Prickly-Pear Cactus
Opuntia polyacantha
Purple Coneflower
Echinacea angustifolia
Purple Wake-Robin
Trillium petiolatum
Red Alder
Alnus rubra
Red Columbine
Aquilegia formosa
Red-Flowering Currant
Ribes sanguineum
Rocky Mountain Bee Plant
Cleome serrulata
Rocky Mountain Maple
Acer glabrum
Salal
Gaultheria shallon
Salmonberry
Rubus spectabilis
Scarlet Globe Mallow
Sphaeralcea coccinea
Seashore Lupine
Lupinus littoralis
Showy Phlox
Phlox speciosa
Shrubby Beardtongue
Penstemon fruticosus
Silky Lupine
Lupinus sericeus
Silver Sage
Artemisia cana
Silvery Buffaloberry
Shepherdia argentea
Silvery Lupine
Lupinus argenteus
Sitka Alder
Alnus sinuata
Sitka Mountain Ash
Sorbus scopulina
Sitka Spruce
Picea sitchensis
Skyrocket
Ipomopsis aggregata
Slender Popcorn Flower
Plagiobothrys tenellus
Slender Willow
Salix exigua
Slimflower Scurfpea
Psoralidium tenuiflora
Small-Head Clover
Trifolium microcephalum
Snow-on-the-Mountain
Euphorbia marginata
Spring Birch
Betula fontinalis
Squaw Bush
Rhus trilobata
Stemless Evening-Primrose
Camissonia subacaulis
Sticky Currant
Ribes viscossissimum
Straggly Gooseberry
Ribes divaricatum
Subalpine Fir
Abies lasiocarpa
Sugarbowls
Clematis hirsutissima
Tansy
Tanacetum nuttallii
Tarragon
Artemisia dracunculus
Thimbleberry
Rubus parviflorus
Three-Leaf Bitterroot
Lewisia triphylla
Tolmie's Onion
Allium tolmiei
Tufted Evening-Primrose
Oenothera caespitosa
Twinberry
Lonicera involucrata
Umatilla Gooseberry
Ribes cognatum
Varileaf Phacelia
Phacelia heterophylla
Vine Maple
Acer circinatum
Water Birch
Betula occidentalis
Western Blue-Flag
Iris missouriensis
Western Bracken
Pteridium aquilinum pubescens
Western Huckleberry
Vaccinium occidentale
Western Larch
Larix occidentalis
Western Mountain Kittentails
Synthyris missurica
Western Red Baneberry
Actaea arguta
Western Red Cedar
Thuja plicata
Western Serviceberry
Amelanchier alnifolia
Western Snakeweed
Polygonum bistortoides
Western Springbeauty
Claytonia lanceolata
Western Sweetroot
Osmorhiza occidentalis
Western Wake-Robin
Trillium ovatum
Western Wallflower
Erysimum capitatum
Western White Pine
Pinus monticola
White Alder
Alnus rhombifolia
White Milkwort
Polygala alba
White Squaw Currant
Ribes cereum
Whitebark Pine
Pinus albicaulis
Wilcox's Beardtongue
Penstemon wilcoxii
Wormwood
Artemisia ludoviciana
Yellow Bell
Fritillaria pudica
Yellow-Flowering Pea
Lathyrus ochroleucus
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