438 OPHIOGLOSSALES 
O. vuleatum that an understanding may be arrived at as to the true 
morphology of O. pa/matum. The fertile spike in O. pendu/um is commonly 
simple, and its insertion is very constant at a median point on the upper 
Vic. 230. 
A-F=Various spikes of O. palmatuim, showing details of branching and insertion. 
G, H, f=spikes of O. pendulum. J, K=abnormalities of O. vuleatum. L-P =abnor- 
malities of //edminthostachys. O and P are from drawings by Prof. Goebel. A-¥ are 
one half natural size. 
surface of the frond: it appears that there is no close parallel in this 
species between the lobing of the sterile and the branching of the fertile 
portions. The mode of branching of the spike, when it occurs, is sub- 
stantially similar to that in O. palmatum. Figs. 239 G and H illustrate 
branchings in which the series of sporangia is almost or completely 
continuous over the branches, but in Fig. 239 1 the series is interrupted, 
