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On this day in Lewis & Clark history...

At Travelers' Rest, Shields continues repairing guns. One of the Nez Perce guides ceremoniously exchanges names with Lewis. Lewis describes several plants that he had added to the herbarium yesterday.

the Musquetors has been So troublesom day and night Since our arrival in this Vally that we are tormented very much by them and Cant' write except under our Bears.

William Clark

Mosquito, Culex quinquefasciatus

Blood engorged mosquito on a human finger

Photo created by the U.S. Center for Disease Control.

I found two speceis of native clover here, the one with a very narrow small leaf and a pale red flower, the other nearly as luxouriant as our red clover with a white flower the left and blume of the latter are proportionably large.

Meriwether Lewis

Smallhead clover, Trifolium microcephalum | Largehead clover, Trifolium macrocephalum

Small, low clover next to a single clover with a large head

Capt L. Showed me a plant in blume which is Sometimes called the ladies Slipper or Mockerson flower. it is in shape and appearance like ours only that the corolla is white marked with Small veigns of pale red longitudinally on the inner Side, and much Smaller.

William Clark

Mountain lady's-slipper, Cypripedium montanum

Three-leaved plant with a white shoe-shaped petal

Photo created by Gordon Leppig & Andrea J. Pickart of the U.S. Fish and Wildlife Service.