FONTAINE] THE EMMONS COLLECTION. 307 
give the midrib of the leaves, which is distinct, although slender. He 
gives on the main stem leaves that are longer and straighter than 
those on the ultimate twigs. I did not see such leaves. They are not 
well preserved on the main stems of the specimens seen, but appear to 
be of the same nature as those on the smaller twigs, although some- 
what larger. For a plant having such small leaves and slender ulti- 
mate br ea the penultimate ones had remarkably large stems. One 
was seen 7 nm. wide. The plant may be described as follows: 
Stems of the penultimate branches very stout and rigid. Ultimate 
branches numerous, closely placed in one plane, alternating with one 
another on opposite sides of the penultimate stem. They are slender 
and rather short, about 55 mm. long, with tips not preserved, and very 
uniform inlength. They are thickly clothed with leaves on very slender 
stems. These ultimate branches have sometimes short lateral branches, 
with rather smaller leaves. These leaves, and those toward the tips 
of the ultimate branches, are smaller than the normal ones on the 
latter, and are often shorter, more distinct, and broadly elliptical, some- 
times almost circular in form. The normal leaves on the ultimate 
branches are about 1 mm. wide and 8 mm. long. They are oblong- 
elliptical in form, with very obtuse tips. They curve strongly away 
from the stem, so as to stand almost at right angles with it. The mid- 
rib is distinct. As in the Palissya, above described, the leaves are 
decurrent at base, so as to overlap one another and cover the stem. 
All the leaves are remarkably firm and leathery in texture. Pl. XLV, 
Fig. 3, gives a penultimate twig smaller than that shown in Fig. 2. 
PaLissYA BREVIFOLIA (Emmons) Fontaine. 
Pl. XLV, Fig. 4. 
1857. Walchia brevifolia Emm.: American Geology, Pt. VI, p. 107, fig. 74. 
1883. Cheirolepis Muensteri Font. non (Schenk) Schimp.: Older Mesozoic Flora of Vir- 
ginia, Mon. U. S. Geol. Survey, Vol. VI, p. 108, pl. liii, fig. 3. 
The original of Emmons’s Walchia brevifolia, as described in Ameri- 
can Geology, Pt. VI, p. 107, fig. 74, was not seen in his collection at 
Williams College, but there are in it specimens of a plant that agrees so 
closely with it that there is little doubt that it is the same species. ‘This 
fossil has no label showing its locality, but it occurs on rock exactly like 
that from Lockville which contains Palissya Braunit (P. sphenolepis). 
Only one specimen of it was seen. The specimen is a fragment of a 
penultimate twig, with a portion of several ultimate branches. All the 
branches contain leaves. The ultimate twigs are fully clothed with well- 
preserved ones. This plant clearly belongs to the same genus with 
the fossil above described as Palissya sphenolepis, and the leaves have 
the same arrangement and mode of attachment as those of that form. 
In other respects they are different. They are much smaller. The 
