103. SELAGINELLA. A'. MONOSTELICAE. a\ ASCENDENTES. 83 



not cordate at the base, the produced auricle, if present, 

 not hamate-incurvate. 



b. Lateral leaves of the principal rachises cuneate or 

 rotundate-cuneate on the upper side at the base. 

 • Lateral leaves of the branchlets entire. 



(38) S. halconensis. 

 *• Lateral leaves of the branchlets more or less 

 denticulate or ciliolate, at least on the upper side 

 at the base. (39) S. Sancti Antonii. 



b.h. Lateral leaves of the principal rachises rotundate to 

 auriculate-cordate on the upper side at the base. 

 c. Intermedial leaves of principal rachises not 

 ciliate. (40) S. Kerstingii. 



C.C, Intermedial leaves of principal rachises ciliate, 

 at least on 1 side at the base. 

 d. Lateral leaves of ultimate branchlets 1 — 2 

 mm. long. 

 e. Relatively small plants. 



(41) S. flmbrillifera. 

 e.e. Large or middle-sized plants. 



f. SporophyUa not peUucid-marg- 

 ined. (42) S. Meyenii. 



f.f. SporophyUa more or less pellucid 

 margined. 



g. Intermedial leaves of branch- 

 lets short-cuspidate. 



(43) S. fallax. 

 g,g. Intermedial leaves of branch- 

 lets long-cuspidate. 

 h. Lateral leaves of the stipe 

 rather erect, at best the 

 higher more spreading. 

 (44) S. Ramosii. 

 fc.lb. Lateral leaves of the stipe 

 horizontal or spreading. 

 (45) S. plumea. 

 d.d. Lateral leaves of ultimate branchlets 2 — 4 

 mm. long. 



