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

UMBELLALES,
o-o3
decurring_ to the petiole; lobes long, oblong-lanceolate, abruptly
pointed, sharply equal!y dentate h-ore above the base, the teeth
turned outside or slightly upward, separated by shaflow sinuses ;
primary nerves broad and flat; secondaries more or less oblique,
slightly curving or nearly straight in passing to the borders,
entering the teeth, eraspedodrome, mostly simple; areotation
distinctly reticulate, in irregularly quadrate or polygonal meshes."
"The leaves, which are :5 cm. to 16 cm. lonE, exdudirtg the
petiole, vary, of course, in w.idth according to the number of
lobes and their divergence from the median nerve, which, in
most of the specimens that I have seen averages thirty-five
degrees. The lobes are a little broader in the middle, slightly
narrowing to the sinusus, 7 cm. to Io era. long, and from 2 era.
to 3 cm. broad at the middle. The separate lobe has the teeth
much larger, rhore turned upward, appearing also of a thicker
texture."
"The species is so remarkably similar to d_ _Vaportanea Lesq.,
that at first sight it appears identical. It differs, however, by
the eoriaceous texture of the leaves, the reticulate areolation, the
larger teeth, the more or less upwardly-turned secondaries, which
are not curved or camptodrome, but run straight to the teeth
and enter them; the base of the leaf is longer, decurrent, and
the lobes more abruptly or obtusely pointed." Lesqnereux, I892.
This species is so well described by Prof. Lesquereux that his
description is introduced i_, taro above. It is an extremely bandsome
species and quite different from any other form in the
Raritan flora. The Raritan leaves are all trilobate, and it would
seem. as if the 5-lobed form wb.s only an occasional variant,
as the same species in its occurrence in the Tuscalo,osa formation
of Alabama is also trilobate.
There is considerable resemblance to dralia dec_rren_, Velenovsky,
_ of the Bohemian Cenomanian, in which, however, the
lobes are relatlvely narrower and longer, with coarser teeth and
deeper sinuses.
• Occu_'rence._Woodbridge.
Collections.--N. ,Y. Botanical Garden."
_Velenovsky,FL Bdhra.Kreidef., ThelI 3, t884,p. st, 131. 4, f. 5-7.
NEW JERSEY GEOLOGICAL SURVEY