... grass and in many places a fine terf of greenswoard. the high lands are thin meagre soil covered with dry low sedge and a species of grass also dry the seeds of which are armed with a long twisted hard beard at the upper extremity while the lower point is a sharp subulate firm point beset at it's base with little stiff bristles standing with their points in a contrary direction to the subulate point to which they answer as a barb and serve also to pres it forward when onece entered a small distance. these barbed seed penetrate ... — The Journals of Lewis and Clark • Meriwether Lewis et al
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