SELAGINELLACE^E. 



97 



Selaginellacese. 



Selaginella SPRING. 

 Key to the species. 



1. Bracts of spikes uniform 2 



Bracts of spikes dimorphous 8 



2. Stem decumbent, spikes very short 1. S. kelungensis. 



Stem ascendent or erect 3 



3. Stem densely tufted 2. S. involvens. 



Stem not tufted 4 



4. Leaves entire 3. S. canaliculata. 



Leaves more or less serrulate 5 



5. Branches with leaves on both sides more than 5mm. broad 



4. S. atroviridis. 



Branches or branchlets with leaves on both sides less than 3 mm. 

 broad 6 



6. Macrospores winged 5. S. caulescens. 



Macrospores wingless 7 



7. Leaves membranaceous 



6. S. subcaulescens. 



Leaves thicker. 7. & pseudo-involvens. 



8. Branches or branchlets with leaves on both 



sides nearly 7 mm. broad. 8. S. Somai. 



Branches or branchlets with leaves on both 



sides less than 4mm. broad 9 



9. Ventral leaves narrowly ovate 



9. S. morrisonensis. 



Ventral leaves broadly ovate 10 



10. Spikes wider 10. S. leptophylla. 



Spikes narrower. ... 11. S. stenostachya. Fig. S9, Selaginella kelungensis 



HAYATA;;a, apical portion of a branch ; 

 1 . Selaginella kelungensis HAYATA b, a dorsal leaf; c, a ventral leaf. 



sp. nov. (Fig. 59). Caulis decumbens ad totam longitudinem radicibua 

 instructus ramosus toto folia tus 10-30 cm. longus. Folia dimorpha 



