Bulletin 3. The flora of the Raritan Formation, 1911 - State of New ...

I4o THE RARITAN FLORA.
Family
LAUR._CEIE.
Genus SASSAFRAS Nees.
(Handb. Bot., vol. ii, 183I, p. 4_8.)
SASSAFRAS ACU'_CILOttU )g Lesq.
Plate XVIII, Fig. 2.
_Cassafras c_cutilobu_mLesq,, Cret. FI., 79, pl. _r4, ]:. r, 2, I874;
Cret. and Tert. FI., 56, pl. 5, f. z, 5, I883; F1. Dakota
Group, Ioo, I892.
Hollick, Trans. N. Y. Aead. Sci., vol. I2:236, pl. 7, f. r
I893; U. S. Geol. Surv. Mon. 5o:77, pl. 30, f. 8, 9,
I9o7.
Newb., Ft. Amboy Clays, 87, pl. x5, f. z-Io; pl. 26, f. -,-6,
I896.
Kurtz, Revista Mus. La Plata, vol. Io: 53, I9o2-
Berry, Bot. Gazette, vol. 34:438, I9°2; Bull. N. Y. Bot.
Garden, vol. 3:8I, pl. 45, f, z, 2, I9o3; Bull. Torrey
Club., vol. 3I : pl. I, f. 6, I9o4; Ann. Rept. State Geol.
(N. J.) for I9o5, I39: pl. 2.,, f. 4, 5, I9o6.
Descriptio_t.---Trilobate leaves, variable in size and outline.
Length 2.5 cm. (in the young leaves which are preserved at the
Woodbridge locality) up to I4 era., avera_ng Io era. to I2 cm.
Width from the tips of the lateral lobes likewise ranging from I
em. to 15 em. averaging about Io cm. Lobes mostly conical and
acute, the middle being usually slightly the broadest and longest.
Lateral lobes directed more or less laterally. Base decurreot.
The sinuses betweer_ the lobes are usually open and rounded,
the margins forming an angle of approximately 9o°, There
is considerable variation, however, in this respect, some of
the leaves having comparatively narrow sinnses with the lobes
directed upward, as in Sassafras progentor Hollick, while others
at the opFosite extr_ne of the series, have extremely shallow
sinuses, so shallow that the leaf has the appearance of a triangularly
pointed, entire leaf. The lateral primaries may branch
NEW JERSEY GEOLOGICAL SURVEY