19. POLYSTICHUM. 165 



d.d. Piiinulae decurrmt, joined at the base. (6) P. lobatum. 



h,h. Main rachis naked, or slightly\scaly , /ibrillose or hairy. 



1. Sori submarginal. (^^ p. amabile. 



±.1. Sori distant from the margin. 



9. Sori costal. (8) P. platypus. 



S.9. Sori + medial. 



3. Lowest pinnae deeply 2-pinnatifid at the base on the lower 



side. (9) P. varium. 



3.3. Lowest pinnae at least S^innate at the base on the lower 



S:. Rhizome creeping; the scales hair-like or + setiform. 



(10) P. aristatum. 

 S.S:. Rhizome erect; the scales long, linear-lanceolate. 



(11) P. coniifolium. 



(1) P. auriculatum, l***., Tent. Pterid., 8'5 ; Aspidiumduriculatum, 

 Sw., Hk. Bk., Syn. Fil., 251; — var. nervosum, Christ, in Bull. Herb. Boiss., 

 VI, 192; Phegopteris nervosa, Fee, Mem., VI, tab. II, fig. 4. 



Stipes tufted, 10 — 15 c.M. long, scaly below or throughout. Fronds 30 — 

 45 C.M. long, 5 — 10 c.M. broad. Pinnae numerous, subsessile, usually close, 

 S'/j — 5 c.M. long, 1 — I'/j c-M. broad, ovate-rhomboidal, falcate, the point acute, 

 the edge spinoso-serrate, not lobed; the upper base with a prominent auricle, 

 the lower one truncate. Texture subcoriaceous ; rachis stramineous, slightly 

 scaly. Sori in 2 rows. 



Var. nervosum: Stipes decumbent; pinnae small, crenate, not 

 aristate; sori scattered, small; indusium hardly present. 



Malacca; Ceylon, Br. India; — var. nervosum: Philippines; Formosa. 



* (2) P, (liaphanum, Moore, G. Chr., Ind. Fil.; Aspidium diapha- 

 nim, Zoll. 4- Mor., Rac, Flor. Btz., I, 175. ' 



Rhizome short, erect, densely clothed with ferrugineous, lanceolate, acu- 

 minate, ciliate scales. Stipes 3 — 6 c.M. long, densely scaly. Fronds + 10 — 

 15 c.M. long, ± 2'/2 — 5'/2 c.M. broad. Pinnae sessile or the lower ones 

 stalked, oblong-rhomboidal, the base obliquely cuneate, the edge toothed to 

 lobed and toothed. Lowest pinnae pinnate with few, small, obovate pinnulae 

 at the base. Texture thin; rachis densely scaly; the edges and both surfaces 

 hairy; midribs wavy. Sori 1 — 6 on each side of the costae. 



Java. 



