Lewis and Clark's Montana Plants  When Lewis and Clark were in Montana they collected an unknown number of vascular plant specimens.  Of all the specimens collected, 31 still exist and are housed in the Lewis and Clark Herbarium in Philadelphia. This page includes articles about these 31 special Montana plants generally, species specifically, and a list of sources for further study. These articles are all PDF format. An Adobe Acrobat reader can be downloaded at no cost from Adobe.

 Plants Collected in Montana During the Lewis and Clark Expedition and Housed in the Lewis and Clark Herbarium at the Academy of Natural Sciences in Philadelphia (pdf)

Lewis and Clark Plants Collected Elsewhere that Occur in Montana (pdf)

Lewis and Clark species specific series.  

• Atriplex gardneri (Gardner's saltbush) (pdf)

• Balsamorhiza sagittata (arrow-leaf balsamroot) (pdf)

• Dalea purpurea (purple prairie clover) (pdf)

• Dasiphora fruticosa (shrubby cinquefoil) (pdf)

• Elaeagnus commutata (American silverberry) (pdf)

• Euphorbia marginata (snow-on-the-mountain) (pdf)  

• Gaillardia aristata (blanketflower) (pdf)

• Hesporostipa comata (needle-and-thread grass) (pdf)

• Hordeum jubatum (foxtail barley) (pdf)

• Iris missouriensis (Rocky Mountan iris) (pdf)Juniperus communis var. depressa (common juniper) (pdf)

• Lewisia rediviva (bitterroot) (pdf)

• Lonicera involucrata (twin-berry honeysuckle) (pdf)

• Lupinus argenteus (silvery lupine) (pdf)

• Lupinus sericeus (silky lupine) (pdf)

• Mimulus guttatus (common monkey flower) (pdf)Oenothera cespitosa (gumbo evening primrose) (pdf)  

• Orthocarous tenuifolius (thin-leaved owl clover) (pdf)

• Oxytropis besseyi (Bessey's locoweed) (pdf)

• Pedicularis cystopteridifolia (fern-leaf lousewort) (pdf)

• Pedicularis groenlandica (elephanthead pedicularis) (pdf) 

• Philadelphus lewisii (Lewis's mock orange; syringa) (pdf)

• Populus balsamifera ssp. trichocarpa (black cottonwood) (pdf)

• Purshia tridentata (bitterbrush) (pdf)

• Ribes aureum (golden currant) (pdf)

• Sarcobatus vermiculatus (greasewood) (pdf)

• Sedum stenopetalum (worm-leaved stonecrop) (pdf)

• Sphaeralcea coccinea (scarlet globemallow) (pdf)

• Trifolium microcephalum (small-headed clover) (pdf)

• Zigadenus elegans (mountain death camas) (pdf)

Sources of information

• Sources (pdf)