i''ii:i;ihi;.i:- Aiii.wn .m. \K] 



(1) A. philippense I.. Stipos ;j to 20 I'ln. Iii;^li, wiry, !iakcil, ixilislied, 

 (lark hriiwii; Ircim l."> to 2'> cm. Ion;;, or tlio a|)cx morr [jrolonj^'cd nnrl 

 rooting, alioiit .'> cin. hroad, simply piimnto; piniui' variable, mostly about 

 2 cm. long by 1 cm. Ijroad, morr or less deeiduou.s from the upper end of a 

 stalk sometimes 15 mm. \i>u'^. tlie side toward the rachis forming an obtuse 

 angle with tlie basiseopic, <>r sometimes a straight line with it, tiie upper 

 and outer margins rounded, moie or less iiu-ised; veins only moderately con- 

 spicuous; sori nariHJwer than llie lubes they are borne on, and lunulatc 

 rather than straight. .1. hinuUitum Hurm. 



Luzon, Ciiniintj 7'-i; I'hilippines, Kuhii ; Bagnio, FJmrr (i.)!)tj; Pangasinan, 

 Merrill 2>tl ; J^amao Forest Reserve, Cupclnnd .397; Manila, Muruvc, Topping 

 (i ; Albay, Hurdiidn. 



Pantropie. 



(2) A. alatum ('opeland. Like tlie preeeding species in size and general 

 appearance: stipe, rachis, and ])etiohdes with a membranous wing 0.5 mm. 

 broad on eacii side; petiolules ratlur shorter; iniur and lower sides of 

 pinme at about a riglit angle, u])i»er side nearly straight; venation very 

 prominent; sori the width of the lobes bearing them, .straight rather than 

 lunulate. 



Lamao Forest Reserve, Copeland 243, 1:300; C'ulion, Merrill 482. 



(3) A. caudatum L. Stipes tufted. s])reading, .3 to 10 cm. long, tonien- 

 tose; frond l.j tu 30 em. long, usually elongate and rooting at the apex, 

 simply pinnate; pinnie 10 to 15 mm. long, half as deep, horizontal or ascend- 

 ing, almost sessile, dimidiate, broadest next the base, lower line straight 

 and entire, upper finely incised more deeply than in the preeeding species, 

 herbaceous or sidjcoriaceous, villose; veins prominent, close; sori mostly 

 roundish, on the ends of the lobes. 



Luzon, Cuniing 11; Cagayan-Luzon, Warburg 1221.3; Benguet, Loher, 

 Elmer 6403; Xueva Ecija. Merrill 278; Bataan Province, Merrill 1603, 

 Barnes Forestry Bureau 164, Whit ford 200; .Manila, Loher, Warburg; 

 Masbate, Baranda; Capiz, Copeland 55; Mindanao, Cuming 202; Davao, 

 Copeland 633. 



Africa to Malaya. 



(4) A. Capiilus-Veneris L. Stipes about 20 cm. high, black, polished; 

 fronil 20 to 411 cm. high, deltoid or narrower; lowest pinnae themselves spar- 

 ingly bipinnate: ultimate segments fan-shaped, 10 to 18 mm. deep, with 

 cuneate base and rounded, lobed outer side, membranous, glabrous; sori 

 (in Philippine specimens) decidedly broader than deep. 



Benguet, Elmer 6417; Mariveles Loher. 

 Sojithern Kuro|if and Tropics everywhere. 



(5) A. diaphanum I'luine. Stipe 10 to 20 cm. liigli, slender, blackish, 

 polished; frond In to 1.") em. liigli. 2 to 3 cm. broad aiul simply pinnate, or 

 usually with 1 to 3 branches at the base, which are sometimes nearly as 

 large as the terminal one; pinnules 1.5 cm. long, half as deep, lower line 

 ratlier decurved, upper parallel with it and crenate like the outer edge, 

 membranaceous, not quite glabrous; sori round-reniform, in the sinuses of 

 the upper and other margin. Beside the usual mature form, young plants 



