166 103. SELAGINELLA. A 1 . MONOSTELICAE. b 1 . INTERTEXTAE. 



rotundate to subcordate and imbricated over the stem, the lower 

 base rotundate to rotundate-cuneate ; leaves of the upper plane spaced 

 on the stem, imbricated on the branchlets, erect, adpressed ; of the stem 

 ovate, long-acuminate to long-cuspidate, keeled, 1V mm. long, shortly 

 ciliolate on both sides, rather equal-sided, rotundate-cuneate on both sides 

 at the base, the outer base not or hardly produced ; of the ultimate 

 branchlets similar to those of the stem but growing gradually somewhat 

 smaller. Spikes generally solitary, to 5 mm. long, 2V 4 mm. broad; 

 sporophylla of the upper plane rather imbricate, somewhat ascending, 

 lanceolate, to 2 mm. long, acute, keeled, spinulose on the upper edge, 

 obsoletely denticulate on the lower edge, the keel spinulose ; sporophylla of 

 the lower plane erected, imbricated, lanceolate-ovate, acuminate to cus- 

 pidate, spinulose on both edges, keeled; macrospores yellowish-white, the 

 largest finely verruculose on the lower side, finely foveolate between the 

 apical ribs, the smallest similar but nearly smooth; microspores yellowish 

 or whitish, nearly smooth. 

 Lingga Islands. 



(125) S. mcnibranifblia, t>. A. v. K., Bull. Btz., 1912, VII, 31. 



Shoots elongated, decumbent, repeatedly dichotomous, caespitose; 

 secondary shoots pinnately branched, the rachis stramineous, irregularly 

 grooved when dry, under 1 mm. thick, 4 6 mm. broad including the 

 lateral leaves; pinnae remote, short and simple or elongated and more 

 or less pinnately or dichotomously decompound; branchlets short, 3 5 

 mm. broad including the lateral leaves. Leaves heteromorphous ; lateral 

 leaves very thin, diaphanous, horizontally spreading or nearly so; those 

 of the main rachises approximate or remote, oblong, rather straight, 

 unequal-sided, much the broadest on the anterior side, the largest 3 mm. 

 long, 2 mm. broad near the base, acute or subobtuse, entire or obsoletely 

 denticulate, the upper side ciliolate towards the base, the base truncate 

 or subcordate-truncate on the upper side, rotundate or subcordato-rotundato 

 and sparingly denticulate on the lower side; those of the branchlets 

 similar but smaller, rather approximate and more ascending, relatively 

 narrower, acute, more rotundate-cuneate at the base, less unequal-sided 

 (except in the simple pinnae); leaves of the upper plane remote, erect; 

 those of the main rachises not adpressed, ovate, 2 mm. long, long-aristate- 

 acuminate, the edges more or less obscurely denticulate but the inner 

 edge ciliolate towards the base, the base slightly obliquely rounded, 



