SUB-SECTION POLYSTICHUM. 
IOI 
stalkless ; with acute-angled or wedge-shaped bases ; whilst in 
A. angulare the pinnules are stalked and their bases obtuse-angled. 
Fig. 34. — Aspidium aculeatum, var. acrocladon. 
In A. aculeatum the fronds are darker and more shining, stouter 
and more leathery in texture, and the habit of the plant is more 
