ULMUS SPECIOSA Newb.
ULMUS SPECIOSA Newb., Proc. U. S. Nat. Mus., Vol. V,
p. 507, 1883; Later Extinct Floras, p. 80, Pl. XLV, figs. 24, 7
(non figs. 5 and 8), 1898.
Ulmus pseudo-americana Lesq., Cret. and Tert.
Fl., p. 249, Pl. LIV, fig. 10, 1883.
The leaf made the type of Lesquereux's Ulmus
pseudo-americana is preserved in the paleontological collection of
the University of California (No. 1758), and as it is clearly the same
as the large leaves figured as the types of Newberry's U.
speciosa and is referred to it, as the latter has priority.
As Newberry states, the collections from Bridge Creek
contain a number of elm leaves of the character and size shown in fig. 8
of his plate; that is, they are very much smaller and have less coarsely
cut margins than those shown in figs. 24, and 7. He decides,
however, that these differences are not sufficient to warrant separating
them as a distinct species. If these extremes of size and shape were
connected by intermediate forms it would be unwarranted to separate
them, but among a considerable number this is not found to be the case.
It is possible to determine from even a relatively small fragment the
form in hand. It therefore seems justifiable to separate them, and I
have accordingly done so, retaining the name speciosa for the
leaves and giving to the Smaller ones the name of Ulmus
Newberryi.
Ulmus speciosa, as here emended, may be
described as follows: Leaves 10 to 13 cm. in length, 5.5 to 6 cm. in width,
petioled, long ovoid or elliptical in outline, very unequal sided at
base, narrow pointed at apex; margins coarsely and doubly serrate;
nervation strong, very regular, with a strong midrib and some 15 to 20
pairs of thin, close, parallel secondaries; nervilles numerous, close,
mainly percurrent and at right angles to the secondaries.
The fruit probably of this species is figured and
described by Newberry.
Locality.Bridge Creek, Grant County,
Oregon. Collected by Rev. Thomas Condon (U. S. Nat. Mus., Nos. 7065,
7066, 7067, 7068) and Maj. Charles E. Bendire (U. S. Nat. Mus., Nos.
9217, 9367).
ULMUS NEWBERRYI n. sp.
Pl. IX, fig. 4.
ULMUS n. sp., Knowlton in Merriam, Univ. Cal., Bull.
Dept. Geol., Vol. II, No. 9, p. 288, 1901.
Ulmus speciosa Newb., Later Extinct Floras, p.
80, Pl. XLV, figs. 5 and 8 (now figs. 2-4 and 7), 1898 (1899).
Leaves membranaceous in texture, lanceolate in
outline, narrowed, and very unequal sided at base, long and slender
pointed at apex; margin coarsely and irregularly doubly serrate, the
primary teeth large, of quite regular size, the other teeth smaller and
quite irregular; midrib rather thin, perfectly straight; secondaries
about 12 or 15 pairs, parallel, at an acute angle and ending in the
larger teeth; nervilles numerous, fine, mainly broken, producing a large
block net work between the secondaries.
This species is founded on a considerable number of
leaves besides the ones figured by Newberry under U. speciosa.
One of the most perfect has been figured here. This is very narrowly
lanceolate, 10 cm. in length and only a little over 3 cm. in width. The
petiole is about 5 mm. long. Other examples are only about 6 cm. long
and 2.5 cm. wide, and this is the usual size.
As pointed out under U speciosa, this species
may be distinguished by its much smaller size, much narrower shape, and
more oblique base. In fact, it approaches closer to U. californica
a in size and shape than to U. speciosa. It differs from
U. californica in having larger, doubly dentate teeth, those of
the former species being small and only simply dentate.
Locality.Bridge Creek, Grant County,
Oregon. Collected by Rev. Thomas Condon (U. S. Nat. Mus., No. 7064) and
Maj. Charles E. Bendire (U. S. Nat. Mus., No. 8493).
a Mem. Mus. Comp. Zool., vol. VI, No. 2, p. 15, Pl.
IV, fig. 2, 1878.
ULMUS PLURINERVIA Unger.
ULMUS PLURINERVIA Unger. Lesquereux, Proc. U. S. Nat.
Mus., Vol. XI, p. 18, 1888.
A single specimen with its counterpart is all that
has been found of this form. It is a little larger than the figure given
by Heer a of the Alaskan form, but is otherwise the same.
Locality.Van Horn's ranch, about 12
miles west of Mount Vernon, Grant County, Oregon. Collected by Maj.
Charles E. Bendire (U. S. Nat. Mus., No. 2620).
a F. Foss. Alaska, p. 34, Pl. V, fig. 1, 1869.
ULMUS CALIFORNICA? Lesq.
ULMUS CALIFORNICA Lesq, Foss. Pl. Aurif. Gravel, p.
15, Pl. IV, fig. 2, 1878; Proc. U. S. Nat. Mus., Vol. XI, p. 18, Pl. V.
fig. 6 (there wrongly stated to be a figure of Quercus horniana),
1888.
The collections contain several examples, one of
which was referred by Lesquereux to his Ulmus californica. The
others are similar to this and should properly go with it. The question
as to whether they are properly referred to this species is a rather
difficult one to settle. None of the leaves are nearly perfect nor do
they agree in all particulars with the types. The secondaries incline
to arch slightly outward instead of strongly upward. The character of
the teeth can not be made out satisfactorily. In view of these
statements, it seems best to question their reference to this species,
and await future material to settle the matter definitely.
Locality.Mascall beds, Van Horn's ranch,
12 miles west of Mount Vernon, Grant County, Oregon. Collected by Maj.
Charles E. Bendire (U. S. Nat. Mus., No. 2621) and by Knowlton and
Merriam, July, 1901 (U. S. Nat. Mus., Nos. 89838985).
PLANERA UNGERI Ettingshausen.
PLANERA UNGERI Ettingshausen. Lesquereux, Proc. U. S.
Nat. Mus., Vol. XI, p. 19, 1888.
This species is represented by a single example and
its counterpart, and although not perfectly preserved may well belong to
this form.
Locality.Mascall beds, Van Horn's ranch,
Oregon. Collected by Maj. Charles E. Bendire (U. S. Nat. Mus., No.
2534.)