196 BERRY : MESOZOIC FLORA OF THE COASTAL PLAIN 
been used by Sweet * for an existing species and therefore has to 
be abandoned, while macrophylla, which at once suggests itself, 
was used by Vukotinovic in 1870 for a fossil species, so that the 
species under consideration may well be named in honor of its 
describer, Professor Newberry. 
Liriodendron dubium sp. nov. PLATE 14, FIGURE 3 
Leaf about 6-7 cm. long and 5 cm. broad at the widest part, 
which is in the lower half of the leaf. The petiole is not preserved 
but the midrib is very thick. The secondaries are all of small 
calibre, of equal rank and very numerous ; they branch from the 
midrib at an angle of 45 to 50 degrees and are nearly straight and 
parallel. The tip, which is not preserved, was probably pointed. 
There are two lateral lobes on the perfect side of the specimen. 
Basal part of the leaf roughly semicircular in outline and markedly 
decurrent. The only tertiary venation shown is the small straight 
nervilles connecting the secondaries, the venation being obscured 
toward the margin. 
While this species is founded upon the imperfect. specimen 
figured and its counterpart, there is little doubt of its affinities with 
the Cretaceous species of Ziriodendron. It is just the size of 
Liriodendron primaevum and L. Meekii and of Liriodendropsis sim- 
plex and L. angustifolia, being wider, however, than the latter. 
The venation is of exactly the type which obtains in the two latter 
species, and the thick midrib is an additional character of most of 
the species of Liriodendron. While the outline is not that which 
we are accustomed to associate with this genus, there are many 
modern Liriodendron \eaves which approximate it and one such is 
reproduced on PLATE 14 for comparison. With regard to the stage 
of Liriodendron development represented it may be said that while 
the venation has not advanced beyond the Liriodendropsis type the 
outline is somewhat beyond Liriodendron primaevum and L. Meekit, 
even hinting at that of Liriodendron oblongifolium, retaining how- 
ever, in all probability, the pointed tip of the progenitor of the 
genus, although this is conjectural, and there may have been an- 
other pointed lobe on each side and an apical sinus between them 
as in L. oblongifolium. However, pointed leaves in this genus are 
not the anomaly that they seem to be, for we already have one 
* Hort. Brit. 11, °1826 (Ed. 1). 
