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

168 THE. RARITAN FLORA.
Ttm Milltown leaf, of which two specimens have been found,
is more suggestive of Phaseolites elcgans in general appearance
than it is of the species with which it is identified. This is due
to its more slender apical portion. On the other hand, it shows
the very full convex base on one side, mzd the more acutely
branching secondaries which are considered specific characters of
Phaseolites nmnhassettensis.
Occurrcnce.--Milltown.
Collectio_s.--U. S. National Musemn.
Genus PRUNUS Limt&
(Sp. PI., t753, P. 473,)
'If'RUN'US ? ACIJTIFOLIA Newb.
Plate XXIt, Fig. 1,
Prunus ? acutifolia Newb., FI. Amboy Clays, 9o, pl. I4, /. _,
1896.
Deacription.--Leaves ovate in outline, about 4.5 cm. in length
by 2.5 cm. in breadth. Apex acute. Base rounded or slightly
cuneate. Margins regularly and finely serrate except for a few
millimeters at the base. Secondaries indistinct, evidently numerous
and parallel, branching from the nfidrib at an acute angle,
about 45 °.
This species was based upon a single imperfect specimen from
Woodbridge. An additional specimen, lacking the tip, and two
other fragments were subsequently collected at South Amhoy.
N very similar leaf from Gay Head, Marthas Vineyard, is described
by Holliek _ as an Amelanchier, and Lesquereux describes
leaves and fruit from the Dakota Group as a species of Prunus
of the Amygdalus section.
Occurrence. Woodbridge, South Amboy.
Collections.-_U. S. National Museum, N. Y. Botanical Garden.
' Hollick, Mon. U. S. Geol. Surv,, voL L, 19o7, p. 83, pt. 32, f, I.
NEW JERSEY GEOLOGICAL SURVEY