14. DENNSTAEi)TlA. l3l 



Papuan and Polynesian material. Secondary and tertiary divisions 

 spreading or more or less oblique. — Two forms united by intermediates : 



Forma typica (Hassk., Fil. Jav., 57): Fronds 4-pinnatifid ; pinnulae up 

 to + 8^ — 10 cm. long, to + 2 '/a cm. broad, the base truncate; tertiary 

 divisions to + l'/4 cm. long, to 4 mm. broad, pinnatifid V2 — '/-i-way 

 down to the costa, the apex toothed, the base obhquely cuneate-truncate, 

 broadest on the upper side, the lobes oblong, close, creaate or toothed, 

 at best 3 mm. long. 



Forma decomposita (v. A. v. R., in Bull. Btz., 1912^ VII, 11 ; Schk., 

 Krypt. Gew., I, tab. 129): Fronds 4-pinnate or nearly so; pinnulae ^; 

 10 — 20 cm. long, up to 5 cm. broad; tertiary divisions obliquely cuneate- 

 subtruncate at the base, up to ± 272 cm. long, to 1 cm. broad, cut 

 down to a narrowly winged costa into small, more or less distant, 

 obliquely cuneate-oblong leaflets; leaflets cuneately narrowed at the base, 

 obUque, the lowest anterior one the largest, up to 5 mm. long, to 3 mm. 

 broad, with the edge crenate, toothed or pinnatifid. 



Sumatra, Java, New Guinea; Polynesia. 



(12ff) I>. concinua, Mst., in Hedwi., LVI, 349. 



Fronds large, 4 m. or more long, 1 m. broad, 4-pinnate. Pinnae to 

 1 m. long, 80 cm. or more broad, elongate-ovate-lanceolate, acuminate, 

 the acumen shortly linear, serrate. Pinnulae about 50-jugate ; higher 

 pinnulae sessile, following short-stalked, horizontal, linear-lanceolate, long- 

 acuminate, obliquely truncate-cuneate at the base; central pinnulae 

 largest, 15 cm. long by 3 cm. broad. Tertiary segments trapezoid-oblong, 

 to 172 cm. long by 7 mm. broad, pinnatifid in the upper part, 

 pinnate in the lower part. Ultimate segments oblique, elongate-obovate, 

 4 — 5 on a side, narrowed at the subcuneate base, obtuse, entire or 

 crenulate, the lower produced, sparingly lobed. Texture subcoriaceous ; 

 colour pale-green; costae densely setulose, veins less so. Sori 1 to each 

 lobule, near the costula, below the sinus. 



Neiv Ghmtea. 



(13a) W. Eliiieri, CopeL 



Elmer's No. 8027 has the main rachis distinctly, though minutely, 

 pubescent above. 



