54. ATHYRIUM. 281 



costae and veins; rachises very sparingly aiid deciduously scaly; main 

 veins pinnate in the lobes; veins simple, ± 3 — 4 on a side. Sori linear, 

 2 — 3 mm. long, slightly recurved; indusium narrow. — In appearance 

 this suggests Diplazium brevisorum J. Sin, 

 Mindanao, 



(21) A. piiicSieB'i'iiutian, Copel., in Philipp. Journ., VIIF, 141, 

 tab. III. 



Stipes stramineous, + 30 cm. long, clothed towards the base with 

 scattered, pale-brown, lanceolate scales. Fronds ovate, + 30 — 40 cm. 

 long, acuminate, 3-pinnate in the lower part, the rachis naked. Pinnae 

 horizontal, short-stalked, to 15 cm. long and 5 cm. broad, long-acuminate, 

 often imbricate, the lowest somewhat deflexed. Pinnulae imbricate, 

 spreading, short-stalked, oblong, to 2^1^ cm. long and ± Vi as broad at 

 the base, blunt, the lowest obliquely truncate at the base. Ultimate 

 segments small, oblong, the lowest anterior the largest, horizontal, ± 

 ',2 — '/i "^m. long, blunt, acutely toothed, cuneate at the base. Texture 

 herbaceous; surfaces naked; costae sparingly hairy above. Sori short, 

 broad; indusium brown, often lacerate. 



Java, 



(22) A. lIOMltoni, Copel., in Journ. Str. Br. R. A. Soc, LXIII, 71. 

 Stipes to 90 cm. long, slender, black, glossy, smooth, the base often 



provided with deflexed black scales. Fronds 3-pinnate, at least 60 cm. 

 long by 30 cm. broad when fully developed, the rachises black, minutely 

 scaly. Pinnae to 25 cm. long, 6 cm. broad, short-stalked, the anterior 

 ones the longer, to 4 cm. long by 1 cm. broad, acuminate, with only the 

 lowest segments free, sessile, hnear-oblong, 1 V2 m™- broad, obtuse, serrate. 

 Texture papyraceous; costae and veins black, the former squamulose, the 

 latter sometimes so; veins simple, 2—3 on a side. Sori costal, short; 

 indusium broad, thin. 

 Borneo. 



S5. A-SI'LElVIU^ls £*««^. 

 § 1. THAIViNOPTERIS. 



(2ft) A. nitliforinc, ». a. v. n., in Bull. Btz., 1912, VH, 6, 



