103. SELAGINELLA. A 1 . MONOSTELICAE. Si 4 . ASCENDENTES. 121 



long, 1 mm. diam. ; sporophylla ovate, aristate-acuminate, keeled, piloso- 

 denticulate and narrowly pellucid-margined on both sides, with the cusp 

 Vs as long as the blade, the posterior ones somewhat larger, to 1Y mm. 

 long and Va as broad; macrospores yellowish- white, finely rugulose to 

 reticulate, with the apical ribs encircled by a subentire or undulate, 

 hyaline, wing-like equatorial crest; microspores orange-coloured, provided 

 with scattered, long-stalked, capitate projections. 

 Borneo. 



(70) S. Posewitzii, fiefm., Hedwi., LI, 241. 



Shoots erect, 20 25 cm. long, the lower part simple, subterete, 

 somewhat compressed, the upper part branched, cordate-rotundate in 

 outline; upper part of the main rachis to 10 mm. broad including the 

 lateral leaves; lower pinnae 2-pinnate, the rachis 8 mm. broad; lower 

 pinnulae pinnate, central one or more times forked, higher simple; 

 ultimate branchlets 3 4 mm. broad. Lateral leaves of the stem sub- 

 spreading, very unequal-sided, acuminate, broadly rounded at the upper 

 base, straight or shortly subtruncate at the lower base, subentire or 

 obsoletely denticulate on the lower edge, copiously denticulate and rather 

 pellucid-margined on the upper side, the largest hardly more than 3 mm. 

 long and I 1 /* mm. broad; those of the branches similar but subfalcate, 

 shortly acuminate, entire on the lower edge, the largest 4 mm. long and 

 2Va mm. broad; of the branchlets 2 2% mm. long, rotundate-cuneate on 

 the upper side at the base; leaves of the upper plane of the stem 

 unequal-sided, oblique-ovate, aristate-acuminate, minutely piloso-denticulate 

 and rather pellucid-margined on both sides, somewhat keeled and pellucid- 

 dotted in the upper part, obliquely rotundate at the base and rather 

 subcordate on the outer side and subcuneate on the inner side, the largest 

 3V 2 mm. long and IVz mm. broad; those of the branches similar but 

 relatively narrower and growing gradually smaller; those of the ultimate 

 branchlets 3 A mm. long and l /z mm. broad. Spikes solitary, 5 20 mm. 

 long, 1 Vz mm. diam. ; sporophylla nearly isomorphous, the posterior 

 ones somewhat larger, ovate, shortly aristate-acuminate, minutely piloso- 

 denticulate and rather pellucid-marhined on both sides, keeled, the 

 largest hardly 1V 2 mm. long and 3 /4 mm. broad; microspores red or 

 yellow, provided with a few scattered, shortly conical projections; 

 macrospores 



Borneo. 



