92 103. SELAGINELLA. A 1 . MONOSTELICAE. a. ASCENDENTES. 



the lower part, cordate at the base, the outer side piloso-denticulate, 

 auricled and ciliate at the base ; leaves of the branched portion hetero- 

 morphous; leaves of the lower plane spreading, obliquely subfalcate-ovate, 

 subacute, the upper base rotundate or subcordate-rotundate, the lower base 

 rotundate or subtruncate-rotundate, the aligular side spuriously veined, 

 the upper side pellucid-margined, piloso-denticulate, long-ciliate at the base, 

 the lower side entire, long-ciliate at the base, the largest leaves of the 

 main rachis 5 mm. long and 2 mm. or somewhat more broad, those of 

 the ultimate branchlets I 1 2 2 mm. long and V *A mm. broad; leaves 

 of the upper plane erect, broadly and obliquely falcate-ovate, shortly 

 aristate, sparingly denticulate on both sides, pellucid-dotted, the inner 

 base truncate-rotundate, the outer incurvate-auriculate and sparingly long- 

 ciliate, the largest leaves of the main rachis 2V mm. long, those of the 

 branchlets 1 mm. long, often entire and not ciliated, the cusp to V as 

 long as the blade, the inner base rotundate-cuneate, the outer base 

 rotundate-cordate. Spikes square, solitary, 1 U IVz cm. long, 1 mm. diam. ; 

 sporophylla deltoid-ovate, shortly aristate-acuminate, piloso-denticulate, 

 pellucid-margined, keeled; macrospores yellowish or reddish-brown, provided 

 with simple, flexuose, branched or connected rumples on the basal side, 

 the apical ribs encircled by an equatorial ring; microspores yellowish or 

 dirty-orange, provided with crowded conical projections. 

 Luzon. 



(34) S. Fenlxli, Hieron., Fed., Rep., X, 98. 



Shoots 50 60 cm. long, the lower part simple, stipitiform, green- 

 stramineous, compressed-quadrangular, to 3V mm. thick at the base, the 

 upper part 3-pinnate, deltoid-ovate in outline, with the branchlets simple 

 or forked, 4 5 mm. broad including the lateral leaves. Leaves of the 

 stipe suberect, heteromorphous ; those of the lower plane very unequal- 

 sided, oblique-ovate, subacute, cordate and ciliate at the base, piloso- 

 denticulate on the upper edge, subentire or minutely denticulate on the 

 lower edge, the largest leaves 4 mm. long and 2 mm. broad ; of the upper 

 plane broadly ovate, shortly acuminate, nearly equal-sided, piloso-denticulate, 

 ciliate and obliquely cordate at the base, the largest 3V mm. long and 

 2 mm. broad ; leaves of the main rachis heteromorphous ; of the lower 

 plane approximate, spreading, falcate-oblong, acuminate, ciliate at the 

 base, indistinctly spuriously nerved, with the upper side piloso-denticulate, 

 narrowly pellucid-margined in the lower part, auriculate-cordate at the 



