UOTRYCHIUM. 



16' 



GENUS II. 



BOTRYCHIUM. Swartz. 



A SMALL family of dwarf Ferns, only one species of which, 

 Botrychium lunaria, is a native of Great Britain. 



Fronds herbaceous; fertile and sterile branches distinct, yet 

 on the same stem. 



Yeins repeatedly branched from a central costa; venules free. 



The name derived from the Greek — hotrys, signifying a bunch 

 or cluster. 



Sprengel enumerates — 



B. lunaria, Sivartz, Europe. 



— Australe, Broion, New Hol- 

 land. 



— • Matricarise,*^re/2(7e/,Europe. 



— Fumarise, Sprengel, Carolina. 



— ternatum, Sioartz, Japan. 



Kunze gives — 



B. Australe, Broion. 



— dissectum, Muhlenherg. 



— fumarioides, Willdenoto, N. 

 America. 



— gracile, Kunze, North 

 America. 



B. dissectum, Sprengel, North 

 America. 



— Virginicum, Swartz, North 

 /America. 



— cicutarium, Swartz, Hispan- 

 iola. 



B. lunaria, Swartz. 



— obliquum, Muhlenherg , N. 

 America. 



— rutsefolium, Broion, Europe. 



— Virginicum, Sioartz. 



