116 103. SELAGINELLA. A 1 . MONOSTELICAE. a 4 . ASCENDENfES. 



morphous, ovate-oblong, 1 mm. long, acute or shortly mucronulate, 

 keeled, minutely serrulate, the lower more spreading than the higher; 

 macrospores 2 in a macrosporangium, whitish, verruculose-rugulose, the 

 apex flattened, without radiating ribs, encircled by a ring-shaped crest; 

 microspores probably wanting. 

 Borneo. 



(63) S. billitoiicnsis. . A. r. JR., Bull. Btz., 1914, XVI, 43; 

 S. Grabowskyi, Warb., v. A. v. K, Bull. Btz., 1911, I, 16, p. p. 



Resembles in aspect S. sungemagneana v. A. v. E., but: Pinnulae 

 simple or forked; ultimate branchlets a little broader; lateral leaves a 

 little larger, indistinctly spuriously veined and pellucid-margined, shortly 

 ciliolate towards the base on the upper side, those of the stem rounded 

 on the upper side at the base; macrospores pale-yellow-brown. 



Billiton. 



(64) S. Vaiivuiireiii. t>. A. . Jtt., Bull. Btz., 1914, XVI, 44. 

 Shoots erect from a decumbent base, 10 20 cm. long, branched down 



nearly to the base, the branching between dichotomous and pinnate, the 

 stem obtusely quadrangular on the upper side, rounded on the lower 

 side, 2 mm. thick, the main rachis 8 10 mm. broad including the lateral 

 leaves ; pinnae much ascending, suberect, irregularly compound ; branchlets 

 very short, 2 3 mm. broad. Leaves heteromorphous ; lateral leaves 

 horizontal and remote on the stem, ascending and imbricate on the 

 branchlets; of the stem rather straight, oblong, blunt, unequal-sided at 

 the base, indistinctly spuriously veined, the upper side copiously minutely 

 denticulate, subpellucid-margined, broadly rounded at the base, the lower 

 side entire, mostly provided with a few (14) minute teeth at the 

 narrowly rotundate-truncate base, the largest leaves 5 mm. long, nearly 

 2 mm. broad; of the branchlets similar, the largest 3 mm. long, with 

 the upper side more distinctly pellucid-margined, the upper base rotundate- 

 cuneate, the lower base abruptly or gradually cuneate and entire; inter- 

 medial leaves erect, adpressed ; of the stem moderately remote, subfalcate- 

 oblong, cuspidate-acuminate, nearly keeled, the cusp 1 U as long as the 

 blade, the sides more or less minutely denticulate, the inner base rotundate- 

 cuneate, the outer base much produced with a rounded, very slightly 

 hamate-incurvate auricle, the largest leaves 2 mm. long; of the branchlets 

 much smaller, imbricate, the outer base slightly rotundate-auriculate, 



