144 103. SELAGINELLA. AI. MONOSTELICAE. a 5 . CAULESCENTES. 



the lower plane contiguous, ascending, lanceolate-oblong, dark above, pale 

 beneath, slightly falcate, firm; those of the branchlets much imbricated 

 over the rachis, somewhat imbricate, bluntish, obsoletely denticulate at 

 the apex, the upper edge entire, or minutely denticulate towards the 

 base, the lower edge entire, the upper base rounded, the lower base 

 narrowly truncate, rounded or rotundate-cuneate, sparingly ciliolate, the 

 largest leaves 3 mm. long, 1 mm. broad, slightly dilated on the upper 

 side near the base; leaves of the upper plane imbricated, erected, ovate- 

 oblong, the largest 2 mm. long, shortly acuminate, nearly acute, entire 

 or obsoletely denticulate, keeled, the inner base rotundate-cuneate, the outer 

 base cordate, sparingly ciliolate, hardly produced. Spikes square, to 2 cm. 

 long, 2 2V mm. diam.; sporophylla triangular-ovate, imbricate, spreading, 

 or erecto-patent when young, acute, entire or obsoletely denticulate; 

 macrospores yellowish-white, smooth or irregularly reticulate, naked or 

 pulverulent, the apical ribs encircled by a ring-shaped crest; microspores 

 yellow or pale-orange, provided with subcylindrical or shortly stipitate- 

 capitate projections. 

 Java, New Guinea. 



a. HottlOCOStachyS. 6. Pubescente*. 



M. Lateral leaves decurrent upon the rachis. 



A Rhizome 1-stelical. (99) S. Vogelii. 



AA Rhizome 2-stelical. (100) S. Braunii. 



l.. Lateral leaves not decurrent, though sometimes more or less broadly 

 adnate at the base. 

 2. Ultimate branchlets 1 3 mm. broad. 



3. Intermedial leaves cuspidate. (101) S. biformis. 



3.3. Intermedial leaves blunt, acute or at best acuminate. 

 4. Lateral leaves narrowed at the base. 



* Lateral leaves of branchlels oblong, very blunt. 



(102) S. Dahlii. 



** Lateral leaves of branchlets lanceolate, or not very 

 blunt. (103) S. Sonneratii. 



4.4. Lateral leaves broad or cordate at the base. 

 &. Ultimate branchlets 1 l l /t mm,, broad. 



