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On this day in Lewis & Clark history...

The Expedition loads the horses and travels the trail that climbs the high ridge above the Clearwater River. They cross Lolo Creek at the traditional crossing and climb up to the Weippe prairie where they first met the Nez Perce last fall.

The com-mas grows in great abundance on this plain; and at this time looks beautiful, being in full bloom with flowers of a pale blue colour.

Patrick Gass

Camas in bloom

Small meadow with blue blossoms

we went eairly for our horses found all except 2. about 10 A. M. we Set out and proced. on
about 4 P M. we arived at the Commass ground where we Camped 22 Sept last but no villages here now.

John Ordway

Jim Ford Creek at Weippe Prairie

Slow creek and meadow

we ascended the river hills which are very high

Meriwether Lewis

Hills above the Clearwater River

Steep forested hills

the country through which we passed is extremely fertile and generally free of stone, is well timbered with several speceis of fir, long leafed pine and larch

Meriwether Lewis

Lolo Trail above Lolo Creek

timbered, steep trail

the pass of Collins's Creek was deep and extreemly difficult tho' we passed without sustaining further injury than weting some of our roots and bread.

Meriwether Lewis

Lolo Creek crossing

Lolo Creek Crossing

there are two speceis of the wild rose both quinqui petallous and of a damask red but the one is as large as the common red rose of our gardens.

Meriwether Lewis

Nootka rose, Rosa nutkana | Wood's rose, Rosa woodsii

Two pink rose blossoms

Wood's Rose (right) by W. Padgett of the U.S. Forest Service.

this level consists of about 2000 ackers of level Smooth prarie on which is not a tree or Shreub, but the lowest parts is covred with commass which is now all in blossom, but is not good untill the Stalk is dead, then the natives assemble and collect their winters food in a short time as it is verry convenient for their villages as points of timber runs out in the praries of higher ground & covred with pitch pine.

John Ordway

Weippe Prairie

Large grass prairie

saw many sand hill crains and some ducks in the slashey glades about this place.

Meriwether Lewis

Weippe Prairie wetland

Marsh with tall grass and a long-beaked bird

An Evergreen A Shrub about 8 or 9 f. high. On the Rocky mountains waters of the Kooskooskee

Pursh (Meriwether Lewis)

Buckbrush ceanothus, Ceanothus velutinus

White umbel on a tall bush

Photo ©2012 Walter Sigmund. Permission via the GNU Free Documentation License.

On the plains of Columbia June: 10th 1806

Pursh (Meriwether Lewis)

Idaho fescue, Festuca idahoensis

Thick clump of grass

Photo © Matt Lavin. Permission via the Creative Commons 2.0 License at Wikimedia.

On the plains of Columbia &c. Jun: 10th 1806.

Pursh (Meriwether Lewis)

Prairie junegrass, Koeleria macrantha

Tall grass

Photo © Don Pedro28. Permission via the Creative Commons 3.0 License.

A great horse medicine among the natives. On the Kooskooskee Jun: 10th 1806. grows on rich upland.

Pursh (Meriwether Lewis)

Fern-leaved desert-parsley, Lomatium dissectum

Lomatium with fern-like leaves

The most common grass through the plains of Columbia & near the Kooskooskee R. Jun: 10th 1806.

Pursh (Meriwether Lewis)

Sandberg's bluegrass, Poa secunda

Tall grass stem

Photo Cassondra Skinner @ USDA-NRCS PLANTS Database. USDA, NRCS. 2011. The PLANTS Database (http://plants.usda.gov, 7 March 2011). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

On the plains of Columbia Jun: 10th 1806.

Pursh (Meriwether Lewis)

Bluebunch wheatgrass, Pseudoroegneria spicata

Tall grass in a dry area