2-36 37. ADIANTUM. § 1. EF-ADIANTDM. 



often subacute, the rachis pilose, both surfaces hairy, the hairs very pale, 

 more or less deciduous, the sori obreniform, nearly round, very small, 

 the margins sharply serrate or slightly lobed (broadly crenate), the lobules 

 sharply and irregularly serrate, the indusia pilose. 

 Borneo. 



(8) A. caudatuiu, L,., Schk., Krypt. Gew., I, tab. 117. 



(10a*) A. Edgeworthii, Uh., Spec. Fil., II, 14, tab. LXXXI B. 



Stipes elongated, slender, and as well as the rachis ebeneous, glabrous. 

 Fronds linear-oblong, elongated, + 15 — 30 cm. long, narrowed and often 

 rooting at the apes and there bare of pinnae. Pinnae nearly _ sessile, 

 alternate, dimidiate-oblong, rounded to subacute at the apex, the upper 

 base truncate and parallel to the rachis; upper edge obscurely lobed, 

 rather more so in the barren pinnae, the lobes rounded' when barren, 

 truncate when fertile. Texture membranaceous ; surfaces naked ; veins not 

 prominent, not compact. Sori 1 on each lobe ; indusia transversely oblong, 

 rather semiorbicular, sometimes confluent. — Near A. rhizophorum Sic. 



Timor, Luzon; China, Br. India. 



(11) A, Irapeziforme, A.,- A. rhomboideum, Schk., Krypt. G-ew., 

 I, tab. 122. 



(15c) A. piilcherrimuui, Copel., in Philipp. Journ. VF, 138, 

 tab. XXII. 



Stipes aggregate, black-brown, glossy, clothed at the base with 

 narrow, brown scales. Fronds 8-pinnate, + 25 cm. long, the rachises 

 velutinous above; branches 2 — 3 on a side below the terminal one, the 

 lower 2-pinnate towards the base. Leaflets dimidiate, to + 1'/^ cm. 

 long and ^4 c™' broad, the upper edge lobed, the outer edge rounded or 

 truncate and toothed. Texture coriaceous; upper surface black-green, 

 lower bluish ; veins sulcate above. Sori terminal on the lobes, obreniform ; 

 capsules springing from the veins and parenchyma. 



Borneo. 



(15d) A. Doctersii, ». A. ». «., in Bull. Btz., 1913, XI, 1, tab. I. 



Rhizome short, the scales linear-subulate, dense, brown. Stipes 



approximate, ± 25 — 85 cm. long, glossy, dark-purple-brown, the base 



