lot 



PERNS : BEITISII AND FOEEIGN. 



Division II. Desmobrya. 



Fronds in vernation terminal, uniserial or fasciculate, their 

 bases adherent and continuous with the stem, which is eitber 

 a caudex or sarmentum. 



Tribe IY.-ACROSTICHE.2E. 



Sori undefined (amorphous), naked. Fertile fronds or seg- 

 ments always more or less contracted ; the under side (or rarely 

 both sides) densely sporangiferous. Acrostichtim, Linn. 



§ 1. Elaplwglossece. Fronds always simple. Veins free or 

 rarely combined at the margin or reticulated. 



* Veins free. 



29. ELAPHOGLOSSUM, Sclwtt; J. Sm. 



Vernation uniserial and sarmentose, or subfasciculate and 

 decumbent, squamose. Stipes often pseudo-articulate, node 



Genus 29.— Portion of barren frend, 

 under fide. No. 3. 



Genus 29. — Portion of fertile 

 frond, under side. No. 3. 



