38 
NEW SYLVA 
sed ? — Florida and Alabama in the hills, leaves 
uncial, base and end quite entire, middle teeth 
small but close subequal. 
Genus ULMUS. 
Without giving a complete monograph of all 
our Elms, I will try to rectify and improve 
this Genus by adding 5 to those already known 
or admitted. There are several overlooked sp. 
of it, since Thomas has quite lately described 
the 17 . racemosa from New York : the others 
known are 17 . americana , nemoralis , fulva 
and alata , to which I shall add U. longifolia . 
ohovata , alba , dent at a and dimidiata ; thus 
we know already 10 N. Amer. Sp. and there 
are more perhaps, those of Origon are not yet 
described. 
567. Ulmus longifolia Raf. shrubby, 
branchlets slender smooth striated, leaves on 
short petiols, smooth on both sides, thin, oblong 
elongate, base subcordate hardly obliqual, end 
acuminate, margin duplicate serrate — Alaba- 
ma and Tennessee, near to U. alata , but branch- 
es not winged and leaves longer subcordate. A 
shrub 8 to 10 feet high, leaves 3 to 4 inches 
long about one wide, 
568. Ulmus obovata Raf. Tree, branches 
patent, branchlets terete smooth rugose, leaves 
ample on short petiols obovate acuminate, base 
obtuse obliqual, margin duplicate serrate, near- 
ly smooth above, villose beneath — in Kentucky 
and Illinois, a tree 30 to 40 feet high, with 
large leaves 4 to 6 inches long, 3 to 4 wide, 
near to the two next which differ by oblong 
leaves and white hanging branches, or ovate 
rough leaves & c. 
569. Ulmus alba Raf. fl. hid. 387. U. Amer. 
Var, pendula of Authors — Tree with hanging 
