DESCRIPTION OF SPECIES. 81 
LIRIODENDRON QUERCIFOLIUM Newb. 
Pl. LI, figs. 1-6. 
Liriodendron quercifolium Newberry, Bull. Torrey Bot. Club, Vol. XIV, January, 1887, 
p. 6, Pl. LXII, fig. 1. 
Leaves large, 15°" long by 10° broad, long petioled, base horizontal 
or slightly cordate, summit deeply emarginate, sides bearing each three or 
four pointed, sometimes spatulate lobes, separated by narrow sinuses which 
reach nearly to the midrib; nervation regular, midrib straight or curved, 
terminating at the bottom of the sinus of the summit, strong side branches 
traversing each lobe and terminating in the point between these more 
delicate, generally simple branchlets. 
The general form of these leaves is considerably like that of some 
of the oaks, Quercus alba, Q. nigra, etc., a character which has suggested 
the name. The strong terminal emargination and the nervation sufiice, 
however, at once to separate them from Quercus and bring them into 
Liriodendron. As will be seen by the figures now given, there is consid- 
erable diversity in these leaves, some having broader lobes and shallower 
sinuses, approaching the form of those of L. oblongifolium, with which they 
are associated in the Amboy Clays. As a whole, they show a variation 
from the leaves of the living species in an opposite direction from those of 
L. oblongifolium, the latter bemg more simple in outline, oblong in form, 
with small points or lobes on the sides, whereas these are much more 
deeply lobed. 
Locality: Woodbridge. 
LIRIODENDRON OBLONGIFOLIUM Newb. 
Pl. LI, figs. 1-5. 
Liriodendron oblongifolium Newberry, Bull. Torrey Bot. Club, Vol. XTV, January, 1887, 
jos My ded OPEL, saves al 
Leaves 15™ to 20™ in length by 10™ to 12 in breadth, oblong in 
outline, long petioled, base rounded, square, or slightly cordate, summit 
deeply emarginate, sides bearing three or more obtuse or acute points, sep- 
arated by shallow sinuses; nervation distinct, moderately strong, midrib 
MON XXVI——6 
