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Plants Lewis & Clark Collected in Montana

These plants are now housed in the Lewis & Clark Herbarium at the Academy of Natural Sciences in Philadelphia. Species are listed according to the approximate date collected.

Scientific Name

Common Name

Date Collected

Captain and Place Collected

Ribes aureum

golden currant

July 29, 1805

Lewis: vicinity of Three Forks, Gallatin County

Lewisia rediviva

bitterroot

July 1 or 2, 1806

Lewis: along Lolo Creek near Travelers' Rest, Missoula County

Orthocarpus tenuifolius

thin-leaved owl clover

July 1 or 2, 1806

Lewis: Bitterroot Valley near Travelers' Rest, Missoula County

Populus balsamifera ssp. trichocarpa

black cottonwood

July 1 or 2, 1806

Lewis: Bitteroot River near Travelers' Rest, Missoula County

Trifolium microcephalum

small-headed clover

July 1 or 2, 1806

Lewis: Bitteroot Valley near Travelers' Rest, Missoula County

Mimulus guttatus

common monkeyflower

July 4, 1806

Lewis: Blackfoot River, Missoula County

Philadelphus lewisii

Lewis’s mockorange

July 4, 1806

Lewis: along the Clark Fork River, Missoula County

Iris missouriensis

Rocky Mountain iris

July 5 or 6, 1806

Lewis: "Prairie of the Knobs", Ovando Valley, Powell County

Dasiphora (Potentilla) fruticosa

shrubby cinquefoil

July 6, 1806

Lewis: "Prairie of the Knobs", Ovando Valley, Powell County

Elaeagnus commutata

American silverberry

July 6, 1806

Lewis: "Prairie of the Knobs", Ovando Valley, Powell County

Oxytropis besseyi

Bessey’s locoweed

July 6, 1806

Lewis: along the Blackfoot River, Powell County

Pedicularis cystopteridifolia

fern-leaf lousewort

July 6, 1806

Lewis: along the Blackfoot River, Powell County

Pedicularis groenlandica

elephanthead pedicularis

July 6, 1806

Lewis: along the Blackfoot River, Powell County

Purshia tridentata

bitterbrush

July 6, 1806

Lewis: "Prairie of the Knobs", Ovando Valley, Powell County

Balsamorhiza sagittata

arrow-leaf balsamroot

July 7, 1806

Lewis: Lewis & Clark Pass, Lewis & Clark County

Gaillardia aristata

blanket flower

July 7, 1806

Lewis: west of Lewis & Clark Pass, Powell-Lewis & Clark Co.

Juniperus communis var. depressa

common juniper

July 7, 1806

Lewis: Lewis & Clark Pass, Lewis & Clark County, or Clark: Gibbons Pass area, Ravalli-Beaverhead County line

Lonicera involucrata

twin-berry honeysuckle

July 7, 1806

Lewis: along Blackfoot River, Lewis & Clark County, or Clark: Big Hole Valley, Beaverhead County

Lupinus argenteus

silvery lupine

July 7, 1806

Lewis: along Blackfoot River to Lewis & Clark Pass, Lewis & Clark County

Lupinus sericeus

silky lupine

July 7, 1806

Lewis: possibly along Blackfoot River west of Lewis & Clark Pass, Lewis & Clark County

Zigadenus elegans

mountain death camas

July 7, 1806

Lewis: Blackfoot River west of Lewis & Clark Pass, Lewis & Clark County

Hesperostipa (Stipa) comata

needle-and-thread grass

July 8, 1806

Lewis: between the Dearborn and Sun Rivers, Lewis & Clark County, or Clark: Beaverhead River, Beaverhead County

Linum lewisii

Lewis’ blue flax

July 9, 1806

Lewis: vicinity of Sun River, Lewis & Clark-Cascade County, or Clark: Camp Fortunate, Beaverhead County

Hordeum jubatum

foxtail barley

July 12, 1806

Lewis: on White Bear Island, Missouri River, Cascade County

Oenothera caespitosa

gumbo evening primrose

July 17, 1806

Lewis: Great Falls area, Cascade County

Atriplex gardneri (A. nuttallii)

Gardner’s saltbush

July 20, 1806

Lewis: below forks of Marias River, Toole County

Sarcobatus vermiculatus

greasewood

July 20, 1806

Lewis: probably along Marias River, Toole County

Sphaeralcea coccinea

scarlet globemallow

July 20, 1806

Lewis: along Marias River, Toole County

Dalea (Petalostemon) purpurea

purple prairie clover

July 22, 1806

Lewis: Camp Disappointment, Cut Bank Creek, Glacier County

Euphorbia marginata

snow-on-the-mountain

July 28, 1806

Clark: along the Yellowstone River, Rosebud County

Sedum stenopetalum

Worm-leaved Stonecrop

July 1, 1806

Lewis: Traveler's Rest, Missoula, Missoula County

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