168 19. POLYSTICHUM. 



Like P. aculeatum, Schotl, but the pinnulae decurrent, mmSassA at the 

 base. Fronds lanceolate, narrowed towards both ends. 



Var discreluni: Fronds deltoid or triangular. Pinnae cut down 

 to Vs'^^y t" ^^^ costa in the outer half. 



Europe and South. Africa to Japan; Hawaii; — var. discretum: Malaya; 

 North. India, Japan. 



♦.(7) P. amabile, J. Sm., Diels, in Engl. & Prantl, Nat. Pfl.Fam., 

 IS 193; Aspidium amabile, Bl, Hk. Bk., Syn. Fil., 254; Hk., Spec. Fil., IV, 

 tab. CCXXV; Lastraea amabilis, Moore, Bedd., Ferns S.I., tab. GIX. 



Rhizome creeping, the scales linear-lanceolate, ferrugineous. Stipes scat- 

 tered, 15 — 30 c.M. long, slightly scaly below, slender, glossy. Fronds + 30 

 c.M. long, 15—25 c.M. broad, with a long terminal pinna and 2 — 6 similar 

 lateral ones on each side. Pinnae erecto-patent, the lower ones 10 — 20 c.M. 

 long, 2 — 4 c.M. broad, sometimes slightly compound at the base. Pinnulae 

 subrhomboidal, 1 — 2'/2 c.M. long, '/a — 1 c.M. broad, the upper and outer 

 edge cut \ — Vi'^^Y down to the costa into rounded lobes which terminate 

 into a long bristle or a narrow, sharp tooth ; the upper base subtruncate, the . 

 lower one obliquely cut away. Texture subcoriaceous ; racbis and surfaces 

 naked. Sori submarginal; indusium sometimes reniform. 



Malaya; North. India, South. China, Japan. 



(8) P. platypus, niels, in Engl. & Prantl, Mt. Pfl.Fam., I*, 195|; 

 Nephrodium platypus, Hk., Hk. Bk., Syn. Fil., 286 ; P. aristatum, Pr., var., C. 

 Chr., Ind. Fil. 



Stipes 30 — 90 c.M. or more long, smooth, glossy, with a dense tuft of 

 bright-coloured scales at the base. Fronds 45 — 60 c.M. long, 30 c.M. and more 

 broad, deltoid. Lower pinnae 15 — 25 c.M. long, 7 — 10 c.M. broad. Pinnulae 

 deltoid, obliquely truncate at the lower base. Lower segments often free, 

 Va — I'/i cM. broad, ovate-oblong, the teeth mucronalo. Texture sub-coriaceous ; 

 racbis and both surfaces naked and glossy. Sori large, ' copious, in rows 

 close to the midribs; indusium reniform. 



Java; Moulmein, Khasia. 



(9) P. varium, Pr., Copel., Polypod, Philipp., \%;\ Aspidium varium, 



Sw., Hk. Bk., Syn Fil., 254; Hk., Spec. Fil., IV, tab CGXXVL 



Rhizome short, subrepent. Stipes 30—60 c.M. long, densely fibrillose below. 

 Fronds 30—50 c.M. long, 20—30 c.M. broad, lanceolate-deltoid. Lowest pin- 



