﻿168 19. POLYSTICHUM. 



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

 base. Fronds lanceolate, narrowed towards both ends. 



¥ar diiscreiuui: Fronds deltoid or triangular. Pinnae cut down 

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



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



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North. India, Japan. 



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

 I*, 193; Aspidium amabile, BL, Hk. Bk., Syn. Fil, 254; Hk., Spec. Fil., IV, 

 tab. CCXXV; Laslraea amabilis, Moore, Bedd., Ferns S.I., tab. CIX. 



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

 edge cut 73 — V2"Way 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 ; rachis and surfaces 

 naked. Sori submarginal; indusium sometimes reniform. 



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



(8) P. platypus, niets, in Engl. & Prantl, Nat. Pfl.Fam., I*, 193|; 

 Nephrodium platypus, Hk., Hk. Bk., Syn. Fil., 286; P. arisfatum, 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, 

 72 — IV2 cM. broad, ovate-oblong, the teeth mucronate. Textm"e sub-coriaceous; 

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

 close to the midribs; indusium reniform. 



Java; Moulmein, Khasia. 



(9) P. variiim, !■»•., Copel., Polypod, Philipp., 19; Aspidium varium, 

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



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

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



