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

126 THE RARITAN FLORA.
ward the broadly rounded apex and tapering downward to the
euneate base. Midrib slender. Secondaries numerous, close,
fine, branching from the midrib at an acute angle which is very
narrow in the basal part of the leaf, nearly straight and comparatively
long, apparently camptodrome.
.This species was based on the single specimen fig'ured by its
author and no additional material has since come to light. It
seems to be generically identical with Persoorda Lesquermtxii
Knowlton, a much commoner form which is relatively shorter
and broader and of a less delicate texture and habit. Its relation
to the genus Persoonia is entirely problematical.
Occurrence.--South Amboy.
Collectio_zs.--N. Y. Botanical Garden.
PI'_RSOONIA LESQU_R_UXn
Knowlton.
Plate XX, Fig. 6.
Persoonia Lesquereu_ril Knowlton in Lesq., F1. Dakota Group,
89, pl. ,_o, f._to--L-, 1892.
Newb., F1. Ambc, y Clays, 71, pl. 4z,/. zO, 1896.
Berry, Bull. Torrey Club, vol. 33 : 173, 19o6.
Andromeda Iatifolia Newb., F1. Amboy Clays, 12o (pars.), pl.
33, f. 9, 1896 (non [. 6-8, Io).
Desc@tlon.--Leaves obovate in ot_tline, with a broadly
rounded apex, sub-emarg_inate in one "of the Dakota group
specimens, gradually narrowing to the decurrent base. Varying
t_fom 1.7 era. to 5 cm. in length by 1.2 cm. to 2. 5 cm. in greatest
width, which is toward the apex. Petiole stout. Texture subcoriaeeous,
Secondaries sparse, 3 or 4 pairs, thin, alternate,
branching from the stout midrib at an acute angle, al_out 25 °,
camptodrome.
This species, which was described originally from the Dakota
group, of Kansas, is somewhat variable in appearance. Holliek
referred a small almost orbicular leaf from the New Jersey Raritan
to it, presumably on the basis of its resemblance to Knowt-
NEW JERSEY GEOLOGICAL SURVEY