SUPPLEMENT. 72 



not or hardly plicate at the Viase; intermedial leaves erect, pellucid- 

 margined; r)f the secondary rachises somewhat remote, obliquely suh- 

 falcate-ovate-oblong, l)lunt, the inner base narrowed, the outer base produced, 

 rotundate-cuneate or somewhat rounded, the largest leaves + 8 mm. 

 long; of the ultimate hranchlets imbricate, smaller, bluntly and shortly • 

 acuminate, broadly and obliquely adnate at the base, the outer base 

 cuneate nr rotundate-cuneate. Spikes solitary and terminal on the branch- 

 lets, to 1 '/■> cm. long, + 1 '/j '^^ni- diam. : sporoph^dla broadly deltoid-ovate, 

 shortly and bluntly acuminate. i:'ntiiv, keeled, those of the macrosporangia 

 + 1 '/j mm. long, the others smaller ; macrospores pale-ochraceous, roughish 

 on the rounded sidi^, the equatorial projections tuberculiform, the others 

 rugiform. short nr long, straight or flexuose, Ijranehed or connected; 

 microspores whitish or yellowish, provided Avith free or connected, irregularly 

 and more or less coarsely l^acilliform or tuberculiform projections on the 

 rouaded side. 

 Sumatra. 



f204a) S». robiiBlipes. «-. A. v. n. 



Shoots erect, rather large, perhaps to 60 — 75 cm. high, the lower 

 part simple, when dry dirty-str<amineous, irregularly grooved, 3—4 ram. 

 thick at the base, 4— 5-stelical, or 3-stelical with a tendency to become 

 4— .5-stelical, the steles placed in 4 — 5 planes, i. e. arranged in 1 line 

 from the ventral one to the dorsal one, the upper part pinnately compound, 

 the axillary leaves of the main rachis large, ovate, to 6 mm. long by 4 

 mm. broad, broadest at or below the middle, acute or shortly acuminate; 

 pinnae ovate to lanceolate, ascending or spreading, the central the longest, 

 to 15 — 25 cm. long, 2-pinnate or sub-3-pinnate, not rarely provided with 

 axillary accessory pinnae which are articulated at the base; tertiary 

 branches suberect, simple or forked or the lower sometimes subpinnate; 

 ultimate branchlets 1 — 3 cm. long or the terminal ones much elongated 

 and caudiform, 2— 3'/2 nrm. broad including the lateral leaves, narrowed 

 gradually from the base to the apex. Leaves heteromorphous, entire, 

 narrowly pellucid-margined; lateral leaves horizontal on the stipe, ascending 

 on the branchlets; of the stipe and the lower part of the main rachis 

 remote, subpetiolulate, subfalcate-oblong, acute or subacute, the largest 

 5 — 5'/.i mm. long, 2 — 2^1 ^ mm. broad, the upper base rounded, plicate, 

 the lower base rotundate-cordate ; of the upper part of the main rachis 

 and those of the branches growing gradually smaller and less remote; 

 Ferns ajv'p Fekn Allies. 46 



