274 53. DiPLAZiuii. 



§ 2. ANISOGONIUM. 



(49) D. coi'difoliiini. ST.; AtJiyrium conlifoUuin, Copel, in 

 Philipp. Jonrn., III^ 300. 



Simple fronds always cordate at the base, pinnae of pinnate fronds 

 not invariably so. 



Forma minor: Simple fronds and pinnae of pinnate fronds much 

 smaller. — Var. angusfior, Rst. (in Nov. Guin , VIII, Bot., 722) is a form 

 intermediate between this and the type. 



(50) ©. Forbesii, C. Chr.; Athyrium Forbesii^ Copel, in Philipp. 

 Journ., VIIF, 142. 



Forma typica. — Also in Sumatra. 



Forma angustissima (v. A. v. R., in Bull. Btz., 1913, XI, 9): Pinnae 

 narrower, gradually long-acuminate. — Java, Malacca. 



(51) D- alisntifoliiini. r. A. ». R.; Athyrium Cummgii, Copel, 

 in Philipp. Journ., IIP, 299. 



(52) D. frax.inifoliiiiii. -Pr.,* Athyrium, fraxinifolinm, Milde, 

 Copel., in Philipp. Journ , IIP, 299, p.p. 



(52a) I>. asiieriilum, ». A. v. n., in Bull. Btz., 1914, XVI, 8. 



Stipes ± 20 — 25 cm. long or longer, sparingly scaly in the lower 

 part, the scales caducous. Fronds (of fully developed plants?) pinnate, 

 .+ 2272— 27 '/i cm long, + 15 cm. broad. Pinnae ± 6 on each side 

 below the terminal one; terminal pinna ovate-acuminate, + 10 cm. long 

 and half as broad, the edge rather entire, recurved when dry; lateral 

 pinnae smaller, horizontal, remote, the central ones the largest, lanceolate, 

 + 7% cm. long by 2% cm. broad, acuminate, rotundate-cuneate at the 

 base; lowest pinnae petiolulate, following narrowly adnate, higher more 

 broadly so, highest smallest, often connected with the terminal one. 

 Texture coriaceous; surfaces naked ; rachis roughish with crowded, deciduous, 

 horizontal, shortly hair- or gland-like elevations (not positively pubescent 

 or glandular), sometimes provided with axillary buds; veins anastomosing 

 more or less copiously. Sori numerous, long, mostly double. 



Celebes. 



