Evans: HEPATICAE OF PUERTO RICO 7 
Although the account just given adds but little to Spruce’s 
full description, it seems advisable to figure the species and to re- 
describe it on account of its striking peculiarities. S. Kunzeana is 
closely allied to S. sgzamata and was first recognized as a distinct 
species by Spruce, the authors of the Synopsis considering it 
simply a well-marked variety. It is, however, much more robust 
than S. sguamata and differs from it completely in habit, the 
stems arising from a prostrate caudex and being entirely free from 
the substratum. These stems are bipinnate but the branching is 
much looser than in S. sgwamata. The lobule in S. Kunzeana is 
very small and narrowly.cylindrical in form, the free margin 
being strongly curved near its base and then running parallel with 
the axis. The lobule is built up on the same plan as in S. 
squamata, but the apical tooth and sinus are very much shorter. 
The apical auricles of the perianth are larger and more dilated 
than in S. sguamata, so that they sometimes overlap above 
the beak. In many cases they are bordered by a broad white 
zone, due to the dying away of cells, and in this way the perianths 
acquire a very striking appearance. S. Kunzeana has not yet 
been reported from the West Indies but is known along the chain 
of the Andes from Guatemala to Chile. 
NEUROLEJEUNEA 
The subgenus Neuro-Lejeunea, as originally described by 
Spruce,* included three species, Z. seminervis Spruce, L. catenulata 
Nees, and Z. Breutelii Gottsche. The first two are characterized 
by the presence of a false nerve, consisting of a row of ocelli, 
which runs longitudinally through the lobes and extends to the 
middle or a little beyond. This peculiarity is given as one of the 
subgeneric characters and is responsible for the name of the group. 
In spite of these facts the third species which Spruce recognized, 
L. Breuteliit, shows no sign of a false nerve, being entirely desti- 
tute of ocelli. Of course a nerve of this nature cannot be ex- 
pected to yield a very reliable generic or subgeneric character, 
and its absence from L. Breutelit would not necessarily exclude it 
from a group to which L. seminervis and L. catenulata belonged. 
Similar nerves occur in various species of Frudlania, in Ceratole- 
A RENE RCN EY ne een 
* Hep. Amaz, et And. 84. 1884. 
