8l6 APPENDIX. 22. DRVOPTEBIS. 



rigid, clothed with short, grey pubescence and long, black haii's. Fronds elon- 

 gate-deltoid, + 30 c.M. long, + 20 c.M. broad at the base, 2-pinnatifid. Ter- 

 minal pinna incised, the lobes obtuse, subentire. Lateral pinnae ± 7 — 8 

 on each side, oblong, bluntish, lobed nearly to the costa at the base, the 

 lowest ones elongate-deltoid, with the lowest lobes on the lower side produced 

 and deeply lobed. Texture herbaceous, flaccid; under surface paler than the 

 upper; coslae and costulae distinct, black, the latter pinnate and forked in 

 the lobes, flexuose. Sori several on each lobe, terminal on the veins; indu- 

 sium grey, flaccid, fugacious. — Near D. sparsa, 0. Klze. 

 Luzon, Mindanao. 



^ (49) D. Raciborskii, e. A. v. JR. — This species has a dis- 

 tinct sagenioid habit, with the veins sometimes pleocnemioid, forming here 

 and there a single costal or costular areola. 



* (46) D. recedens, O. Htse. — Insert as a synonym: Poly podium 

 recedem, J. Sm., (oldest name). 



• (SI) D. intermedia, O. Hime. — Insert as varieties: — var. 

 Mannii, Christ, Philipp. Journ., 11, 215 ; Nephrodiwn Mannn, Hope, Journ. of 

 Bot., XXVIII, 145; — var. microloba, Christ, 1. c. 



VaP. Mlannii: Fronds resembling D. filix mas, SchoU, n)uch elongat- 

 ed, oblong, 2-pinnalifid; pimiae regularly lobed, lobes simple, only the lowest 

 pimiae 2-pinnalifid, produced on the posterior side. 



Vap. inicpoloba: Stipe and rachis purpureous, densely clothed with 

 red-black, spreading hairs; lower pinnae 1 '/i — 2 c.M. long, '/, c.M. broad; 

 lobes close, + 6 on each side, 2—4 m.M. broad. 



Mindanao. . 



(56a) ». balabacensis, Christ, Philipp. Journ., II, 213. 



Stipes + 35 c.M. long, angular, naked like the whole plants rufo-strami- 



neous OF castaneous, as are rachises. Fronds 3-pinnate, deltoid, + 50 c.M. 



g long, as broad or broader, 3-partite at the base. Pinnae + 8—10 below 



i the pinnatiiid apex, distant, the lowest ±14 c.M. apart, ± 30 c.M. or more 



g, long, ± 25 c.M. broad at the base, deltoid, on stalks ± 5 c.M. long, the 



^ lowest posterior pinnulae ± la'/j c.M. long, + 7 c.M. broad, the tertiary 



^ segments ovate-oblong, 4—5 c.M. long, ± 2 c.M. broad, obtusely inciso-lo- 



bate; higher pinnae sessile, oblong, acuminate, cut down to the costa in the 



-u 



