ClASSIHCATIOir. mi 



1 1 Spore-cases two-valved, bursting vertically 



at the apex. Bing rudimentary, obliquely Tribe 8. 



transverse near the apex ......... OSMTTNDINKZE. 



* * Spore-cases without a jointed ring. 



[A] Fructifications dorsal on normal fronds, (ver- Order. 



nation circinate or incurved) ......... M AE ATTI ACEJE 



(1) Sori oblong distinct, longitudinally bi- Tribe 1, 



valved 



(a) Spore-cases free, crowded in two opposite 1. 



linear series 



(b) Spore-cases concrete, in two opposite 2. 



linear series ............ 



(2) Sori circular distinct ; spore-cases concrete Tribe 2. 



in a single annular series ......... KATTLTTISSINILZE. 



(3) Sori connate over the whole surface of the Tribe 3. 



fertile fronds ............ 



[B] Fructifications marginal, on rachiform fronds Order. 



or branches, (vernation straight) ... OPHIOGLOSSACE2E. 



LYCOPODAi/ES=:Acrogenous plants with axillary radical or petiolar 

 one- four- or many- celled spore-cases. 



* Spore-cases one- three-celled, in the axils of the Order. 



stem-leaves or bracts ......... LYCOPODIACE.ZE 



Stemless ; with radical leaves ; scape leafless ; 1. 



spore-cases one-celled ......... PhylloglosseSB. 



2. 



Stems leafy ; spore-cases one- three-celled . . . LyCOpodieaB. 



* * Spore-cases ( conceptacles) one- four~ or Order. 



many- celled, radical or petiolar ...... MARSILEACEJE 



Spore-cases one-celled 1. 



axillary at the base of the leaves (radical) ... IsoeteSB. 



clustered or binate, on short leafless branch- 2. 



es, beneath the floating rooting stems ... Salvinieae. 



$ 3. 

 Spore-cases two- four- celled, radical ...... PilularieSB. 



4. 

 Spore-cases many-celled, radical or petiolar ... 



B3 



