100 8. HYMENOPHYLLUM. § 2. LEPTOCIONIUM. 



roundish, somewhat broader than the segments when ripe; indusiuiji 

 entire, naked. 

 NeiD Guinea. 



(40) H. Neesii, Hh. 



This species is construed as including 2 distinct forms : H. Neesii Hk. 

 and H. acanthoides Est. 



(4:0a) Ifi. IVeesii, Mh.; H. tunbridgense, Bedel, (not Sm.), Ferns 

 S. I., tab. CCLXV; H. denticulatum, Siv., var., C. Chr. Ind. Fil. — 

 V. D. B., Hymen. Jav., tab. XXX. 



Teeth of laciniae and prickles of indusia short-triangular. 



(406) D. acanlhoidcfS, Rst., in Bull. Btz., 1911,11, 26; H. acule- 

 atimi, Bac, var., C. Chr., Ind. Fil. — V. D. B., Hymen. Jav., tab. XXXII. 

 Teeth of laciniae and prickles of indusia long-subulate. 



(40c^ See No. 30/". 



(41j U. (Iciiticulatiini, Sw.; — var. complanatum, Rst., in 

 Bun. Btz., 1911, II, 25. 



Colour when dry dirty-brown or brown-green, the edges of the wings 

 and segments not rarely bounded by a band- consisting of 1 or more 

 rows of dark-walled cells ; indusium provided on the outer side with few 

 to several short (punctiform) to longitudinally linear, often basal, scattered 

 ridges terminating at the apex into a short and tooth-like or more 

 elongated and filiform appendage. 



■far. cosuplauatuin : Stipes often winged to the base; fronds 

 often narrowed and elongated; ultimate lobes more distant, '/s — 'k 

 narrower, flattened, rarely crisped here and there. — Borneo. 



(42) U. acailcatiiui. itac. 



Two forms: 



Forma typica: Lips (valves) of the indusium subsemiorbicular. 



Forma ucutivalvula : Lips (valves) of the indusium sharply triangular, 



(43) H. bismarckianum, Christ. 



Omit this species here. See No. 38a. 



