24 HYMENOPHYLLUM POLYANTHOS. 



Fronds ovate or oblong, tripirmatifid; segments entire, brief, 

 usually spreading. 



Stipes terete, black, naked, or moderately winged above; wiry. 



Involucres terminal, nearly orbicular; base slightly sunk, or 

 free, profoundly two-valved, valves convex and entire. 



Length of frond from four to twelve inches; width two inches; 

 colour bright green. 



For a frond I am indebted to Mr. R. Sim, of Foot's Cray. 



It may be procured of Mr. Sim. 



The illustration is from Mr. Sim's frond. 



