103. SELAGINELLA. A*. MONOSTELICAE. 477 



(132a) S. incerta, ». A. «. JR., in Bull. Btz., 1916, XXIII, 24. 



Shoots 15—20 cm. long, rather copiously pinnate, the stem terete, 

 to ^3 mm. thick, stramineous, to 4 mm. broad including the lateral leaves ; 

 pinnae erecto-patent, not rarely subparallel to the main stem; higher 

 pinnae short, simple, lower to 15 cm. long, pinnately decompound; 

 ultimate branchlets short, l'/2 — 2 mm. broad. Leaves heteromorphous ; 

 lateral leaves remote on both stem and branches ; of the stem horizontal 

 or much spreading, broadly ovate, unequal-sided, bluntish, the upper 

 side entire tov^ards the apex, gradually ciliolate to ciliate towards the 

 broadly rounded base, the lower side entire, provided with — 3 minute 

 teeth at the narrowly rounded base, the largest leaves + 2*1^ — 2'/, mm. 

 long, to 2 mm. broad, the upper surface provided with very short tooth- 

 like projections near the lower edge ; of the ultimate branchlets smaller, 

 to ± I'/j mm. long, nearly equal-sided at the rotundate-cuneate base, 

 the upper side more distinctly ciliate in the lower '/j-^'/s; intermedial 

 leaves erect; of the stem elongate-ovate, acuminate, more or less keeled, 

 rounded at the base, the inner side more or less deciduously serrulate- 

 ciliolate, the outer side minutely serrulate at least in the upper part, the 

 largest leaves ± 1 74 mm. long ; of the branchlets similar, smaller. Spikes 

 numerous in the fully developed plant, terminal, single or double, 2 — 2 '/j 

 mm. broad; sporophylla of the upper plane imbricate, much spreading, 

 lanceolate-oblong, to l'/2 mm. long, keeled, the upper side very minutely 

 serrulate in the upper part, serrulate-ciliolate in the lower part, the keel 

 ciliate; of the lower plane erect, elongate-ovate, acuminate, keeled, 

 spinuloso-ciliate ; macrospores white, smooth or very minutely punctulate ; 

 microspores. . . . — By its habit and rooting stem intermediate between 

 the Intertextae and the Suberosae. 



Sumatra. 



{135a) S. pycnoearpa, ». A. ». n., in Bull. Btz., 1916, XXIII, 25. 



Shoots trailing, 10 — 15 cm. long, pinnate, or forked with pinnate 

 secondary shoots, the stem slender; pinnae spreading to suberect, to S'/j 

 cm. long (excluding the spikes), the higher simple or forked, the lower 

 sparingly pinnate to repeatedly dichotomous; ultimate branchlets short, 

 the shortest not rarely stalk-shaped and without leaves. Leaves hetero- 

 morphous; lateral leaves spaced even on the branchlets, horizontal or 

 spreading ; of the stem broadly ovate, unequal-sided, broadest on the upper 

 side, subacute or bluntish, the upper side obsoletely denticulate towards 



