407 



bundles, with unarmed stipules: the leaflets cluslcred, obovalc, allc- 

 nuated at the base, with a spinulc at the end: petiole spinescinl, 

 after the leaves are fallen, hardening with the stipules into a triple 

 spine: the peduncles on the branches of the preceding year from 

 each bud, one, two, or three, bent a liltle at the joint, one-flowered. 

 It is a native of Siberia, by the Volga, &c. 



The fifth has trunks covered with a shining yellowish bark: wood 

 of a very deep bay, almost as hard as horn: the older twigs round, 

 with a beautiiully golden shining cuticle; branchlets gray, with very 

 frequent two-spined buds: the spinules slender like needles, spread- 

 ino-, arising from the stipules, in the older branches deciduous: the 

 leaflets four or six in the spontaneous shrub clustered in bundles, 

 quite sessile, linear acuminate, a little hispid: the peduncles spring- 

 ing singly from most of the buds on the branchlets among the leaves, 

 the length of the leaflets, bent at the joint. In this climate it is a 

 low shrub, seldom rising more than three feet. The flowers are yel- 

 low, and appear in April. It is a native of Siberia. 



The sixth species resembles the third sort, but is distinguished 

 by its stifl' or thorny stipvdes: it is a shrub above the height of a 

 man: the leaflets six or eight, ovate, even: common petiole woody, 

 the whole of it perennial, thorny at the end: the stipules awl-shaped, 

 thorny, perennial: the trunk is scarcely an inch and half in diameter, 

 with branches often a fathom in length, subdivided, twisted and 

 diffused, so as to form a hemispherical head, full of branches and 

 thorns. Being covered with flowers during the whole summer, it 

 appears very beautiful: the wood bay-coloured within, on the outside 

 yellow, and very hard: the cuticle on the younger branches greenish 

 yellow, less shining, and more strigose than in die fifth sort, with 

 ash-coloured longitudinal nerves, running from branch to branch: 

 the branches are round, divaricating, alternate: the thorns spreading 

 out every way almost at right angles, alternate, very large, arising 

 from the permanent petioles enlarged, marked also with ihe scars of 

 die leaflets, and having at the base on each side a small, bristle- 

 shaped spinule, standing up, and arising from the stipules: there are 

 several leaves and two or three flowers from the axils of all the 



