BY L. EODWAY. 237 



1913. 



Hypopterygium. Erect, branches in a terminal fascicle or 



approximating to it. 

 Cyathophorum. Normally simple, erect, leaves broadly 



spreading. 



Rhacopilum Palisot. 



Slender, elongating with few vague branches, decumbent 

 closely attached to the ground by bunches of purple 

 rhizoids. Lateral leaves oblong with an obtuse to acuminate 

 apex ; nerve excurrent as a slender hair point ; median 

 leaves dorsal, zig-zag, lanceolate from a broad base, nerve 

 long excurrent ; cells irregular, quadrate to oblong. Seta 

 long, smooth ; capsule inclined, curved, cylindric, furrowed, 

 mouth wide, oblique ; lid rostrate, oblique ; calyptra nar- 

 row, cucullate. smooth or hairy ; exostome teeth lanceolate, 

 with long filiform ends ; endostome shorter, processes short 

 from a deep basal membrane, imperforate, cilia none. 



The long seta and cucullate calyptra are suggestive of 

 liypnaceae. The phyllotaxis and cells are the only claims 

 for its inclusion in this family. 



Rhacopliiiin rrisfatitin H.f. et W. 



Branches often 6-10 cm. long. Lateral leaves ovate- 

 oblong, oblique, surface very obtusely papillose- 1 mm. ; 

 apex from obtuse to shortly acuminate ; margin serrulate 

 above; cells small irregularly quadrate. Seta slender 2 

 cm. ; capsule pale, 2.3 mm. ; calyptra with a few hairs or 

 smooth. 



Very common in woods. 



Rhncopihim af^^iuniferum CM. 

 Syn : Rliacopiluii} auatrale H.f. et W. 

 Similar to the last. Leaves distant, ovate-oblong, 

 oblique, shortly acuminate, 0.7 mm. ; margin serrulate 

 above; cells oblono-hexasfonal, thin walled. Seta 1.5 cm., 

 rather stout ; calyptra clothed with erect hairs. 

 Slopes of Mt. Wellington, Cheshunt. 



LoPHiDiuM Bridel 

 Tall, erect, dendroid from a creeping base, outline ovate, 

 branches from the base complanate. Leaves of the 

 branches trifarious, two lateral rows distichously arranged, 

 the ventral row smaller, appressed ; cells rotund, rather lax. 

 Seta arising indifferently anywhere along the stem or on 

 a branch, rather short, capsule oblong, erect ; lid rostrate ; 

 calyptra long mitriform ; exostome pale, 16 teeth, lanceo- 

 late, acute, closelv trabeculate on the inner surface; 



