208 Howe & Ho.uick: A NEW FOSSIL HEPATIC 
member of the Bryophyta and probably belongs to the family 
Jungermanniaceae of the class Hepaticae. 
Jungermanniopsis gen. nov. 
Plants slender and minute, consisting of stem and leaves and 
showing a pronounced dorsive ntrality, with ventral (postical) 
b 
roothairs and dorsal (antical) apparently one-ranked but pro- 
ably two-ranked ovate-acuminate, often subfalcate, assurgent 
or subvertical euteauy secund) leaves ee ith occasional 
n 
ligulate leaves 
Jungermanniopsis Cockerellii sp. nov. 
Stem ascending at apex; leaves I-1.5 mm. long, 
i 0.4 
in maximum width, contiguous, Garonls ster | or slightly 
overlapping at extreme base, the intervals between the leaves 
s 
sometimes accentuated by reflexions of the subapical margins, 
the margins entire or with indistinct indications of small teeth. 
COLLECTOR: T. D. A. Cockerell. 
FORMATION AND LOCALITY: Miocene shale, Florissant, 
Colorado (Station 14). 
ype specimen in the Museum ot the New York Botanical 
Garden. 
The one fragment, upon 
which the genus and species are 
based, is about 12 or 13 mm. long 
and evidently lies on its side. 
The specimen shows a possible 
forkingof the stem near the apex, 
with one branch ascending and 
Fic. I. JUNGERMANNIOPSIS COCK- the other descending, but the 
EueLLn Howe & Hollick descending part is probably 
only a collection of roothairs. 
Among the living Hepaticae, the ne ae antically secund leaves 
of Jungermanniopsis suggest the widely distributed Herberta 
adunca (Dicks.) S. F. Gray; but there is no indication that the 
leaves are bilobed as in the genus: Herberta. In its antically 
secund leaves, it resembles also such leafy Hepaticae as James- 
oniella autumnalis (DC.) Steph. and certain species of Nardia, 
but in the form and looser disposition of the leaves it is very 
different from any of these. The possible presence of smaller 
