57. ADIANTUM. § 1. EU-ADIANTUM. C. POLYSORIAE. 325 



tapering into a long, rooting and proliferous apex bare of pinnae. Leaflets 

 sessile or subsessile, dimidiate, the base cuneate, the inner edge ± parallel 

 to the rachis, the upper and outer edge laciniate, the laciniae linear or oblong, 

 ±. 2-fid, the apices denticulate, frequently ciliate. Texture firm, rachis hirsute 

 with moderately long, spreading hairs; surfaces naked or clothed with' 

 some scattered hairs. Sori terminal on the lobes; indusium lunulate to 

 obreniform. 



Trop. Asia ^ Africa. 



(10a) A. iipencerianuni, Copet., Philipp. Journ., I, Suppl., 154, 

 tab. XI. 



Rhizome very short, scaly. Stipes approximate, 2—15 c.M. long, purple- 

 black, glossy, the base clothed with, small, thin, deciduous scales. Fronds 

 7 — 17 c.M. long, or longer and rooting, 1—^% c.M. broad, simply pinnate. 

 Leaflets approximate, nearly sessile, sometimes falcate, the base obliquely cuneate, 

 the inner edge excised, the upper edge entire or rarely slightly incised, the 

 apex acute. Texture papyraceous; surfaces naked; veins inconspicuous. Sori 

 continuous or interrupted. 



Luzon. 



* (106) A. liinulatum, JVwrm., Rac, Plor. Btz., 1, 144; Hk. & Grev., 

 Ic. Pil., tab. CIV; Bedd., Ferns S.I., tab. I; A. philippense, L., Copel., Poly- 

 pod. Philipp., 93. 



Stipes 5- 20 c.M. long, tufted, wiry, naked, polished, dark-brown. Fronds 

 15 — 30 c.M. long, 3 — 8 c.M. broad, simply pinnate, often alongated and 

 rooting at the apex. Leaflets I'/j-* c.M. long, to l-^S'/i c.M. broad, dimi- 

 diate or subdimidiate, the base broadly cuneate or truncate (upper and 

 lower base in a continuous, straight or curved line), the lower base in a 

 line or oblique with the petiole, the iipper and outer edge rounded, more or 

 [ess lobed or nearly entire ; petioles of the lower leaflets spreading, to 1 — 1 '/j 

 3.M. long. Lobes rounded, '/^ — 5 m.M. deep. Texture papyraceo-herbaceous ; 

 both surfaces naked. Sori occupying the apices of the lobes, in continuous 

 rows along the edge, sometimes confluent; capsules on the veins only. 



Trop.' Africa, Asia, Australia ^ Polynesia, Centr. America. 



* (11) A. trapexiforme, i., Hk. Bk., Syn. Pil., 118; A. pen- 

 iactylon, L. ^ F., Hk. & Grev., Ic. Pil., tab. XCVIH. 



