78 103. SELAGINELLA. A'. MONOSTELICAE. a*. RADICANTES. 



towards the base, 3 mm. broad near the apex. Leaves heteromorphous ; 

 those of the lower plane horizontal on the main stem, spreading on the 

 branchlets ; of the stem approximate, unequal-sided, obliquely oval, bluntish, 

 submucronulato, rather pale beneath, the upper side more or less obsoletely 

 denticulate towards the apex, minutely denticulate and narrowly pellucid- 

 margined towards the broadly rounded base, the lower side entire, or 

 obscurely denticulate towards the apex, cuneate at the base, the largest 

 leaves to 5 mm. long and 2 mm. broad ; of the branchlets smaller, to 

 3 mm. long; of the upper plane unequal-sided, oblong, cuspidate, minutely 

 denticulate on both sides and slightly keeled towards the apex, auriculate- 

 cordate-rotundate at the outer base, rotundate-cuneate at the inner base, 

 the cusp Vs — Vs as long as the blade; of the stem the largest, 3 mm. 

 long, 1 mm. broad. Spikes solitary, nearly square, 2 — 5 cm. long, 3 mm. 

 diam. ; sporophylla equal-sided, deltoid-ovate, acuminate, keeled, minutely 

 piloso-denticulate, the posterior ones somewhat larger, to 2 mm. long 

 and V2 as broad; macrospores yellowish- white, obsoletely rugulose on the 

 basal side, the apical ribs encircled by an undulated, pellucid crest; 

 microspores pale-reddish, provided with crowded stipitate-capitate projec- 

 tions on the basal side. 

 Borneo. 



(21) ii. lonko-batu, Mieron. 4< e. A. r. A., Bull. Btz., 1914, 

 XVI, 42. 



Shoots creeping, flexuose, 25 — 30 cm. long, pinnate, the main and 

 secondary rachises stramineous, IV2 — 2 mm. thick, 6 — 8 mm. broad 

 including the lateral leaves; pinnae alternate, flexuose, short or elongate, 

 probably growing out to new shoots, pinnate; pinnulae simple, forked or 

 pinnate again; branchlets short, 4 mm. broad. Leaves heteromorphous; 

 lateral leaves horizontal or nearly so; of the main rachis contiguous or 

 subcontiguous, obliquely oblong, unequal-sided, to 4 mm. long, bluntish, 

 the upper edge minutely denticulate towards the apex and the broadly 

 rounded base, the lower edge entire, or subentire towards the apex and 

 sparingly denticulate at the narrowly rotundate-truncate base; of the 

 branchlets similar -but smaller, more crowded, 2 — 2V2 mm. long, narrowly 

 pellucid-margined on both sides, less unequal-sided, the upper base 

 rotundate-cuneate, the lower base narrowly rounded ; leaves of the upper 

 plane erect; of the main rachis more or less remote, 2Vj— 3 mm. long, 

 ovate to obovate-oblong, rather gradually cuspidate, rather keeled, more 



