i9. POLYSTICHUM. 145 



the edge subrevolute, shortly and sharply serrate but more distinctly so 

 towards the apes. Texture coriaceous; surfaces naked; upper surface 

 blackish when dry, lower paler; veins + 5 — 6 on a side, deeply forked; 

 Sori 4 — 5 on a side, medial ; indusium roitnd, peltate; coriaceous, blackish^ 

 rather persistent, slightly erose at the edge. 

 New Guinea, 



(10) I*. ai*is<a,tiini, Pv.; Aspidium aristatum, Sio., Schk., Krypt. 

 Gew., I, tab. 49. 



SO. r>ir>YM:OCH[L,,A.EIVA, Besvuwx. 



W. liiiiulata, Desv.s — var. oceanica; D. fruncatula, J. Sm., 

 var. oseanica, Rst., in Fed., Rep., V, 374. 



Vai*. oceanica: Pinnulae smaller, at best 9 mm. long and 4 

 mm. broad, truncate at the apex; sori more numerous, 6 — 9 on the 

 largest pinnulae. — Neiv Guinea. 



21, PLEOCrVEMlA., JPresl. 



(1) P. heterophylla, ». A. v. tt.; Dryopteris hr/eropliijUa, 0. 

 Ktze, Rev. Gen. PL, II, 813; C. Chr., Ind. Fil., Suppl. 



(4) P. Ijeuxeana, Pr.} P. Cumingiana, Pr., Copel., in Leafl., II, 

 392; — var. echinocarpa, Rst., in Fed., Rep., X, 337; — var. lobato-crenata, 

 Rst., 1. c. 338; ? Dryopteris chrysotricha, C. Chr.^ Ind. Fil. (Nejihrodium 

 chrysotriclium, Bk., in Ann of Bot., V, 328). 



Var. hemiteliiformis : Omit this variety, it being referred to 

 Dictyopteris hemiteliiformis v. A. v. E. 



War. echinocarpa: Texture thinner; under surface clothed 

 with scattered, adpressed, white or yellow hairs. — Neto Guinea. 



W'ar. lobato-crenata: Like the preceding but the hairs more 

 crowded, and the lobes elongated, coarsely toothed; costal arches not 

 rarely wanting. — Neiv Guinea. 



Ferns "AND Fern Allies. 10 



