OF NORTH A.^IKUICA, 39 



branches, bark whitish, leaves oblong, base 

 acute obliqual, duplicate dentate, roughish and 

 lucid above, villose beneath — in Louisiana and 

 other States, 50 to 60 feet hii-h, long flexible 

 branches. As this with the last and next are 

 often blended under the vulgar name of White 

 Elm, I must add what I consider as the real 

 U, Americana. 



570. Uli>ius AMEiacANA L. Authors: (sessi- 

 lis Raf. better name.) Tree, branches divar- 

 gent, branchlets terete smooth rugose, leaves 

 subsessile ovate acuminate, duplicate serrate, 

 base very obliqual subcordate, above rough, be- 

 neath soft hardly pubescent — chiefly in the Al- 

 leghany mts. large tree GO to 80 feet high, 

 leaves 3 to 4 inches long 2 or 3 broad. Thus 

 quite distinct from both the preceding. 



571. Ulmus dentata Raf. Tree, branchlets 

 terete smooth, leaves ample and thin, on long 

 petiols, obovate, base acute entire, not obli- 

 qual, large sharp teeth above, end subacumi- 

 nate, smooth on both sides, fruits fasciculate pe- 

 duncled oblong bifid fimbriate on the sides — a 

 fine new Elm, sent me from Alabama as U, 



fulva, but totaly unlike, much nearer to U, we- 

 moralis 'I which differs by oblong leaves and 

 sessile flowers. Leaves very large G to 7 in- 

 ches long, 3 to 4 broad, petiols over one inch 

 longer than in any other sp. the large subequal 

 teeth are only in the upper half, fascicles of 

 flowers multiiiore, pedicels filiform, calix cam- 

 panulate,stamens exserted, pistil cuneate oblong 

 bifid by the 2 styles. It is called the yellow 

 Elm, 



572. Ulmus dimidiata Raf. shrubby, branch- 

 lets smooth angular, leaves on very short peti- 

 ols, quite smooth biforme, some smaller ovate 



