MALAYAN FEBN ALLIES 38 



(184) S. polyistachya, Wat-b. 



Plants gathered on Mount Talaman (Biinnemeyer No. 370) and in Lebong 

 Simpang (Brooks No. 859/S), which are probably forms of this, are 

 distinguished by the following characters: Shoots erect, about 50—100 

 cm. high, 2-pinnate, the stem 3-stelical, when dry to 6—8 mm. thick 

 in the lower part and irregularly compressed, straight or subtortuous, 

 pale-fuscous in the lower part,'^ fuscous in the middle, black in the 

 upper part; pinnae short-stalked, ascending, lanceolate-elliptical, deciduous 

 (articulated?), the higher to ± 20 cm. long and 5 cm. broad, acum- 

 inate, the rachis stramineous when dry; pinnulae crowded, ascending, 

 to 4 cm. long, 8 — 10 mm. broad including the lateral leaves, simple or 

 often forked or twice to thrice forked at or towards the apex. Leaves entire i 

 leaves of the stem subisomorphous, remote, erect or suberect, oblong, 

 narrowly rounded or subcordate at the base, the lateral ones ^ 2 72 mm- 

 long, the intermedial ones i 1 '/i mm. long, bluntish or shortly acuminate ; 

 leaves of the pinnae heteromorphous, more or less distinctly and narrowly 

 pellucid-margined; lateral leaves spreading; of the secondary rachises 

 subfalcate-oblong, acute, the largest 4—5 mm. long, 2— 2Vj mm. broad, 

 the upper side rotundate-cuneate at the base, the lower side narrowly 

 rotundate-truncate or subcordate at the base; of the pinnulae nearly 

 similar, approximate or slightly imbricate, the largest 4 — 6 mm. long by 

 2 mm. broad; intermedial leaves erect; of the secondary rachises oblong, 

 8 — 4 mm. long, shortly acuminate, the base narrowly rounded or sub- 

 cordate on the inner side, somewhat produced and narrowly cordate- 

 auriculate on the outer side, the auricle rounded ; of the pinnulae imbricate, 

 smaller, suddenly and conspicuously acuminate, the inner side nearly 

 straight, narrowed at the base, the outer side broadly rounded, rounded 

 or somewhat cordate at the produced base. Spikes solitary on the ultimate 

 short branchlets, 2 — 8 (mostly 4 — 6) to a pinnula, to 2 cm. long, 1 — 2 

 mm. diam. ; sporophylla deltoid-ovate, acute or acuminate, more or less 

 distinctly or narrowly pellucid-margined, often intermixed with similar but 

 smaller sterile bracts; macrospores greyish, yellowish or pale-ochraceous, 

 copiously verruculose, the equatorial projections whether or not the largest; 

 microspores whitish or yellowish, provided with crowded, verruciform, 

 clavate or capitate projections on the basal side. 

 Sumatra. 



(185) S. Sctiildel, Hieron., MS. in Herb. Bog. 



Stems S-stelical, when dry stramineous and irrigularly grooved, pinnate ; 



