48 
T. G. HALLE, 
(Schwed. Südpolar-Exp. 
doubt that these small dots, of which about 5 are to be seen, mark the entrance of 
the leaf-traces. When shed, the fronds ought to have left on the stem similar scars, 
which would then be a means of finding out what kind of stems bore the fronds of 
the A^ilssonia-X.y'pQ. In the Hope Bay flora there are no stems known, however, 
which show any surface-features whatever. Still the present specimen, if belonging 
to Nilsso?iia, is of some importance, since the leaf-scars of that genus are not known. 
Fig. II. Nilssotîia tœnîopteroides n. sp. 
a — petiole, Vg b — portion of upper surface of frond, Vi; c — -portion of frond showing occasional 
bifurcation of veins, Vi- 
As already mentioned, the lamina varies much in size. In shape it is al- 
ways very constant, being very long and narrow with parallel edges and very gra- 
dually tapering towards the base. Towards the upper end the lamina tapers much 
more rapidly. PL 6, fig. 7, shows that the apex is obtuse and somewhat rounded. 
Another feature of importance is that the lamina is always entire and show's no 
tendency to become divided up into segments. At most, the margins are faintly 
