356 ON BRANCHING SPECIMENS OF LYGINODENDRON OLDHAMIUM. 
Owing to bad preservation at the critical points it was impossible, in 
either of these specimens, to examine the primary bundle-system of the 
axillary shoots in relation to that of the stem. 
SUMMARY. 
(1) Stems of Lyginodendron occasionally branch, and in each case observed 
the branching is axillary. 
(2) Primary, secondary, and tertiary ramification occurs in one of the two 
specimens investigated. 
(3) In the two specimens examined the direction of the phyllotaxis spiral 
of a branch is always the reverse of that of the axis on which it 
occurs, 
(4) The giving-off of branches from an axis seems to disturb the phyllo- 
taxis considerably, the normal divergence of 2 being lost in the 
appendages. 
