unbranced

There are two species of ever green shrubs which I first met with at the grand rappids of the Columbia and which I have since found in this neighbourhood also; they grow in rich dry ground not far usually from some watercourse. the roots of both species are creeping and celindric. the stem of the 1st is from a foot to 18 inches high and as large as a goosqull; it is simple unbranced and erect. it's leaves are cauline, compound and spreading. the leafets are jointed and oppositely pinnate, 3 pare & terminating in one, sessile, widest at the base and tapering to an accuminated point, an inch and a quarter the greatest width, and 3 inches & a 1/4 in length. each point of their crenate margins armed with a subulate thorn or spine and are from 13 to 17 in number. they are also veined, glossy, carinated and wrinkled; their points obliquely pointing towards the extremity of the common footstalk. The stem of the 2nd is procumbent abot the size of the former, jointed and unbranched. it's leaves are cauline, compound and oppositely pinnate; the rib from 14 to 16 inches long celindric and smooth. the leafets 21/2 inches long and 1 inch wide. greatest width 1/2 inch from their base, to which they are regularly rounded, and from the same point tapering to an accute apex, wich is mostly, but not invariably tirminated with a small subulate thorn. they are jointed and oppositely pinnate, consisting of 6 pare and terminating in one, sessile serrate, or like the teeth of a whipsaw, each point terminating in a small subulate spine, being from 25 to 27 in number; veined, smooth, plane and of a deep green, their points tending obliquely towards the extremity of the rib or common footstalk.

William Clark - The Journals of Lewis and Clark, 1804-1806