103. SELAGINELLA. A^ PLEIOSTELICAE. 223 



to this species differ from Hieronymus' original diagnosis by the following 

 characters: Stems rather 2-sulcate down the face, 5— 8-stelical, the main 

 rachis copiously but not densely foliate; pinnae ascending, to 22 cm. long 

 and 8 cm. broad; pinnulae crowded, to SVj cm. long, the terminal ones 

 not rarely caudate-elongate; branchlets 4 — 6 ram. broad, narrowed gradually 

 towards the apex; leaves dark above, pale beneath; leaves of the lower 

 plane more or less plicate or revoluto-auriculate on the upper side at the 

 very base, the midrib thickened above the middle, narrowed gradually to 

 both ends; leaves of the upper plane of the ultimate branchlets falcate- 

 obovate; spikes numerous, single or double, to 20 mm. long, IV2 mm. diam.; 

 sporophylla crowded, broadly ovate, to IV2 mm. long, subacute, entire, 

 hardly keeled; microspores white or yellow, provided with short, straight, 

 flexuose or branched, moderately crowded, membranous crests intermixed 

 with bacilliform or tuberculiform projections. Two of the specimens are 

 destitute of their stipitiform basal portion; they have the pinnae .not 

 articulated at the base. A third specimen has single or double shoots 

 springing from an 8-stelical (scandent?) main stem; the double shoots are 

 springing nearly from the same point, with the posterior ones adherent 

 and the anterior or accessory (axillary) ones articulated to the main one, 

 both smaller in all dimensions, the pinnae not articulated at the base, the 

 main rachis provided with a few still smaller accessory shoots articulated 

 at the base and springing from the axils of the pinnae. — Hieronymus 

 thinks these specimens to be different from his species. 

 Borneo. 



(201) S. (lenuanu, r. A. v. «., Bull. Btz., 1914, XVI, 55. 



Shoots decompound, the stem 5-stelical, 2 mm. thick, smooth, 

 stramineous, subquadrangular, above sulcate when dry, sparingly foliate, 

 with the axillary leaves roundish-ovate, the lower nearly as broad as 

 long; pinnae lanceolate, the largest 15 cm. long and 5 cm. broad, with 

 the rachis 'A — 1 cm. broad including the lateral leaves; pinnulae crowded, 

 the largest lanceolate-oblong, to 5 cm. long and 2V2 cm. broad, pinnate 

 with 1 — 3 suberect, falcate, simple or forked branchlets on a side; 

 ultimate branchlets to 2 cm. long, 4 — 6 mm. broad, narrowed gradually 

 in the upper part. Leaves heteromorphous, entire; lateral leaves much 

 spaced on the stem, close on the branchlets; of the stem oblique, sub- 

 falcate-oblong, 3 mm. long, blunt; of the ultimate branchlets spreading, 

 falcate, 'bluntish, the upper base rotundate-cuneate, plicate, the lower base 



