22 FLORA OF THE MONTANA FORMATION. 
All of these localities are either in or above the Laramie, Point of 
Bocks forming 1 the only exception. 
The generic name has been selected for this fern more on account 
of its general resemblance to the Schizaeaceje than from close resem- 
blance to any existing species of Anemia. As no trace of fructification 
has ever been detected, it is inferred that the fertile and sterile por- 
tions were distinct and that only the latter have been preserved. This 
circumstance, together with the evident dichotomy of the frond, seems 
to indicate, according to Gardner and Ettingshausen, an affinity with 
the Schizaeaceae. Saporta and Heer, on the other hand, do not agree 
with this view. Saporta, who first described this plant under Asple- 
nium, would now regard it as a new genus allied to Todia. Dr. Stur, 
to whom specimens and drawings were sent, would call it Osmunda. 
In the absence of any additional information, it is probably as well to 
retain the specimen under Anemia, notwithstanding the fact that its 
affinities with this genus are not very marked. 
WOODWARDIA CRENATA U. Sp. 
PI. Ill, fig. 3. 
Frond?; pinnae opposite (?), probably deltoid in outline, deeply 
lobed ; lobes 2.5 to 3 cm. long, 1 cm. broad, obtuse, round-crenate, the 
creuatures sharply serrate; middle nerve very prominent, even to the 
extremity of the lobes; secondary veins parallel to the rachis and to 
the midvein, branching upward and by anastomosis forming two or 
three rows of rectangular or irregular areolations. 
1 have hesitated to describe this as a new species, for the only speci- 
men known is the fragment figured, but the nervation and outline are 
very perfectly preserved and differ from any known species. It is evi- 
dently allied to Woodivardia Jatiloba Lx., from which it differs in having 
the lobes of the pinnae obtuse and deeply crenate, with the crenatures 
finely and sharply serrate. The secondary nervation forms more 
regularly quadrate or rectangular areoles, but otherwise it is almost 
identical. 
The outline of the frond is probably somewhat like that of the sterile 
portion of the living W. areolata Moore ( W. angustifolia Sm.), but from 
the mere fragment it is impossible to be certain of this. It is evidently 
allied to W. areolata, which has the lobes of the i)innae finely, sharply 
serrate, but not crenulate, as in the fossil, though there are quite 
marked indications of crenatures in some specimens. The nervation is 
also quite similar to that of the living species, which differs by having 
the secondary nerves more branched, thus producing more numer- 
ous smaller meshes, there being uniformly three and not rarely four 
rows on each side of the middle nerve, 
A fossil species with which our form shows some affinity is Wood- 
wardia arctica Heer ! from the Miocene of Greenland. The Greenland 
»F1. Foss. Arct,, Vol. I, p. 86; PI. I, fig. 16; PL XLV, fig. 2c ; PI. XLVIII, fig. 9; Vol. II, Pt. IV, p. 
462, PL XL, fig. 6. 
