Fig. C. A small portion of the axis, to show the scalariform vessels with the slightly elongated surrounding cells.
Fig. D. A similar portion, from the central axis of the bractea of fig. B.
Fig. E. A similar portion, from the line of union between the bractea and sporangium of fig. B.
Fig. F. A small portion of a sporangium, sufficiently magnified to show the arrangement and composition of sporules.
Fig. G. Several sporules, both in their compound and simple state, still more highly magnified, with the minute granular matter which usually accompanies them.