DESCRIPTION OF SPECIES. 125 
Order CAPRIFOLIACE. 
VIBURNUM INTEGRIFOLIUM Newb. n. sp.’ 
Pl. XLI, fig. 1. 
Leaves circular or nearly so, somewhat longer than broad, 7 or 8 
in diameter, margins entire; nervation strong, regular, craspedodrome. 
One imperfect leaf of this plant is contained in the collection. The 
general structure of the leaf is that of Viburnum, and, except that the mar- 
gins are entire, it fairly represents one of the larger and orbicular leaves 
of Viburnum lantanoides. The base is probably heart-shaped, but both sum- 
mit and base in the specimen are defective. With so little material, of 
course the reference to Viburnum is entirely problematical, but this deserves 
to be enumerated as another of the extinct species of dicotyledonous leaves 
in the Amboy flora. 
Locality: Woodbridge. 
GENERA AND SPECIES OF UNCERTAIN AFFINITIES. 
PaLawantuus (WILLIAMSONIA) PROBLEMATICUS Newb. n. sp. 
Ply XOOKV, fies: 1-9. 
7 em 2cm 
¢ 
Flowers, when fully expanded, discoid, or in diameter, com- 
posed of twenty or more narrow, strap-like floral envelopes set around the 
edge of a discoid receptacle, which is conical m form, flat above, pointed 
below, where it is continuous with the stem. 
These remarkable objects have produced the greatest surprise, perhaps, 
which has been met with in the disinterment of the representatives we have 
collected of the flora of the Amboy Clays. Their general aspect is alto- 
gether that of a helianthoid flower; so much so that when drawings of 
them were sent to Dr. Gray, the leading authority on the Composite, he 
did not hesitate to say that they were composite flowers. Indeed, it would 
be impossible to reproduce in a fossil state, at least embedded in clay, any- 
thing more perfectly representative, in general and detail, of a composite 
‘The identity of this specimen with the genus Viburnum appears to be exceedingly doubtful, and 
yet there can be no doubt of Dr. Newberry’s views in the matter; hence the original name remains 
unaltered,—A. H. 
