State of Montana Website Montana State Parks Website
  Home » Education » Youth » Lewis & Clark Voyage » Plants » Plants Lewis & Clark Collected in Montana
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 littlehead 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; syringa 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
© 2003 Montana Native Plant Society. For reprint information contact the Editors at:
drakekath@hughes.net