118 103. SELAGINELLA. A 1 . MONOSTELICAE. a*. ASCENDENTES. 



shortly acuminate, rounded on both sides at the base but more truncate 

 on the lower side, spuriously nerved, obsoletely serrulate on both sides 

 towards the apex, shortly denticulate on the upper edge, with the costa 

 clavate towards the apex; of the main rachis the largest, subremote, 

 4Vz mm. long, iVa mm. broad; leaves of the upper plane erect, unequal- 

 sided, subrhomboidal-oblong, aristate-acuminate, nearly keeled towards the 

 apex, cordate-auriculate and slightly incurvate on the outer side at the 

 base, rotundate-cuneate on the inner side, more or less sparingly and 

 shortly piloso denticulate on both edges ; of the main rachis the largest, 

 2*A mm. long and 1 mm. broad, with the cusp Vs Va as long as the 

 blade. Spikes solitary or often 2 3-nate, subtetragonal, 5 10 mm. 

 long, 1V 2 mm. diam. ; sporophylla subisomorphous, deltoid, equal-sided, 

 acute, mucronate, keeled, densely piloso-denticulate and pellucid-margined 

 on both sides, the ventral ones somewhat larger, to VU mm. long and 

 3 A mm. broad; macrospores 1 2 in a macrosporangium, whitish or pale- 

 orange, provided with branched or reticulated crests on the basal side, 

 the apex without radiating ribs, encircled by a crown-like ring; microspores 

 probably wanting. 

 Borneo. 



(67) S. Elmeri. iiferon., Fed., Rep., X, 46. 



Shoots 30 cm. long, the lower part simple, stipitiform, compresso- 

 quadrangular, whitish-stramineous, to 2 mm. thick, the upper part 

 decompound; ultimate branchlets 3 mm. broad including the lateral leaves. 

 Leaves heteromorphous ; lateral leaves horizontal or spreading; of the 

 stipe often deflexed, remote, unequal-sided, obliquely falcate-ovate, shortly 

 acuminate, the upper side the broadest, pellucid-margined, minutely den- 

 ticulate, rounded at the base, the lower side narrowly and inconspicuously 

 pellucid-margined, entire, rotundate-cuneate and sometimes sparingly and 

 shortly denticulate at the base, the midrib thickened towards the apex, 

 the largest leaves 4 mm. long and 2 2 1 U mm. broad ; those of the main 

 rachis approximate, similar but more elongated, 5 mm. long; of the 

 ultimate branchlets similar, suberecto-patent, IVa 2 mm. long and Va 3 A 

 mm. broad, rotundate-cuneate at the base; leaves of the upper plane 

 suberect or erect; of the stem somewhat unequal-sided, falcate-ovate, 

 aristate-acuminate, subentire or minutely denticulate, with the inner base 

 cuneate, the outer base truncate-cordate and somewhat produced, the cusp 

 nearly % as long as the blade, the largest leaves 3 mm. long and I'A 



