103. SELAGINELLA. A-. MONOSTELICAE. a*. ASCENDENTES. 85 



7- Macrospores 1—2 in a macrosporan- 

 gium, without apical ribs. 

 S. Intermedial leaves of main rachis 

 not, or at best shortly, cuspidate. 

 (53) S. bluuensis. 

 ^■^- Intermedial leaves of main rachis 

 rather long-cuspidate. 

 «• Ultimate branchlets to 4 mm. 

 broad. (54) S. Grabowskyi. 

 «•«• Ultimate branchlets 4—6 mm. 

 broad. (55) S. sibogana. 



7-7. Macrospores 4 in a macrosporangium, 

 with 8 radiating apical ribs. 

 ^- Pinnulae simple. 



(56) S. paraguana. 



S-S. Largest pinnulae more compound. 



(57) S. parvifolia. 



/3./3. Lateral leaves of principal rachises auriculate- 



cordate on the upper side at the base. 



(58) S. Paxil. 

 «•«• Lateral haves of ultimate branchlets 3—5 mm. 



^^^^- (59) S. ascendens. 



&5. Intermedial leaves of principal rachises with the outer 

 base not produced, and if so, then not or hardly 

 incurvate-auriculate. 

 «. Branchlets flagellate. 



D Lateral leaves not imbricated over the rachis. 



(60) S. Hosei. 

 DD Lateral leaves imbricated over the rachis. 



(61) S. cavernicola. 

 «.«. Branchlets not flagellate. 



9. Macrospores 1—2 in a macrosporangium, 

 without apical ribs. 



O Lateral leaves of principal rachises 



auriculate-cordate on the upper side at 



the base. (62) S. sungemagneana. 



(63) S. billitonensis. 



00 Lateral leaves of principal rachises 



