SUPPLEMENT. 47 



^•k Veins anastomosing. 



+ Fronds dimorphous, the fertile ones or their segments 

 often much contracted. 

 X At least the fertile fronds incised. 



No. 76. Ciiristopteriii. 

 XX Both barren and fertile fronds not incised. 



A Barren fronds much shorter than the fertile 

 ones, roundish, oblong or ovate, at best ± 3 

 times as long as broad. 



No. 75. Oryenogloissiini. 

 A A Barren fronds not much shorter than the fertile 

 ones, linear, lanceolate or oblanceolate, at least 

 + 4 times as long as broad. 



(No. 65. Lioaeogramma). 



+ + Fronds uniform, at best slightly contracted in the 



fertile region. No. 75a. I^altoniuin. 



P. 126; For: (3) ». erytrorachis, Oiels. — Read: 



(3) D. erythrorachis, Diels. 



Omit this species here, see No. *4. 



(•4) D. erythrorachis, JHeia. 



Stipes erect, polished like the rachises, grooved above, slightly aculeate 

 or muricate towards the base. Fronds large, 3-pinnate; rachises partly 

 pale-brown, partly red-brown, grooved above, shortly pubescent in the 

 grooves and provided with patches of hairs at the places of insertion of 

 the pinnae and pinnulae. Pinnae ovate-lanceolate, petiolate, articulated 

 to the rachis, spreading or more ascending, to 30 cm. long, broadest 

 below the middle. Pinnulae sessile, articulated to the rachis, close or 

 approximate, linear-lanceolate, the largest to 10 cm. long, ± 2'/2 cm. 

 broad at the truncate base, pinnated in the lower part, pinnatifid towards 

 the acuminate, inciso-serrate apes. Leaflets close, spreading or more 

 ascending, ovate-rhomboidal, connected by a very narrow wing, the apes 

 blunt or rounded and crenated, the sides lobed at best to 'k-w&y down 

 to the costa, the lowest anterior lobe often auricle-like, the largest leaflets 

 to I'/j long by about half as broad, obhquely cuneate at the base. 

 Texture firm; surfaces naked; costae beneath sparingly flbrilloso-setulose 



