19. POLYSTICHUM. l41 



Forma typica: Under surface naked or sparingly fibrillose, the 

 fibrils mostly undivided. 



Forma stellata: Under surface provided with copious long-stellate 

 hairs or deeply stellate-fimbriate scales with generally unequal branches. 



"War. micropliylluni : Near var. vulcanicum. Pinnulae rather 

 small, mucronate-denticulate, auriculate, the auricle rounded, apiculate- 

 denticulate. Sori not solitary. — Java. 



War, luiicrouipinnuluiai : Near var. mucronifolium. Rachises 

 densely thin-scaly; scales pale-ferrugineous ; pinnulae longer, pinnate, 

 the lowest anterior segment much the largest, spreading; under surface 

 more copiously paleaceo-pilose. — Java. 



War. sorclidntn: Near var. moluccense. Scales dirty-coloured, 

 hardly rufous. — Negros. 



(4) P. okt-iasuifii, J. Stn.} — var. densum ; ? P. aculeatum, Schott , 

 var. eurylobum. Est., in Fed., Rep., VIII, 164. 



Forma typica: Pinnulae rhomboidal, toothed towards the blunt or 

 mucronate apex, the teeth obscure, or blunt to spinulose, the upper side 

 coarsely crenated or shallowly lobed in the lower part, subauriculate at 

 the base, the crenations, lobes and auricle blunt, truncate or rounded, 

 not toothed, the lower side rather entire. — Luzon. 



Var, densum (v. A. v. R., in Bull. Btz., 1913, XI, tab. VI): 

 Like the type but, the fronds larger, + 40-80 cm. long or even much 

 longer, the pinnae numerous, longer, to 25 cm. long, crowded, the lower 

 not always the largest, to 4 cm. broad, copiously pinnate, the pinnulae 

 crowded, more sharply toothed towards the apex and on the lower side, 

 the lower sometimes more deeply lobed or even deebly pinnatifid on the 

 upper side, and with the auricle not rarely free or nearly so and 

 sometimes minutely apiculate. — Specimens received from and 

 determined by Mousset as P. tenggerense & P. mucronifolium Est. resemble 

 this in all respects except that they are in all dimensions larger than in 

 Zippelius' original plant. — Java. 



(4a) I*, tenggerense. Ust., in Fed., Rep., VIII, 164; ? P. 

 obtusum, J. S)n., var. densum. 



Large. Stipes stout, stramineous, densely scaly; scales of 2 kinds, 

 the smaller ones subadpressed, ferrugineous, narrowly lanceolate, densely 

 ciliate, the larger ones less numerous, spreading, slightly ciliate, black in 



