84 POLYPODIACE.E OP THE PHILIPPINE ISLANDS. 



Masbate and soiitliern Luzon, Baranda ; Montalban, Loiter; IMariveles, 

 1,400 m., Loher, Whitford 275; Culion, Merrill 509, Elmer's 6147, from 

 Baguio, is a small form of this. 



India across Polynesia. 



(23) A. falcatum Lam. Rhizome short-creeping; tipes tnfted, 10 to 

 15 cm. high, firm, erect, dark grayish, nearly naked; frond 15 to 35 cm. 

 high, 7 to 15 em. broad, with 6 to 12 stalked pinnae on each side, which are 

 4 to 7 cm. long, 1 to 1.5 cm. deep, acuminate, shallowly lobed and lobes 

 toothed, inequilateral, lower side very obliquely truncate, texture coria- 

 ceous; rachis almost naked; veins very oblique; sori reaching almost to 

 margin. 



Luzon, Haenke; Calolbon, Catanduanes, Baranda. 

 Zambesi Land to New Zealand and Polynesia. 



A. chamissonianum Presl, collected "at Manila" by Chamisso and Meijen, 

 may be a form of A. falcatum. 



(24) A. contiguum Kaulf. Stipes tufted, 15 to 25 cm. high, firm, 

 erect, chestnut-brown, naked; frond 30 to 45 cm. long, 10 to 15 cm. broad, 

 with 20 to 30 horizontal subfalcate pinnse on each side, which are acuminate, 

 more or less deeply inciso-serrate or lobed, the base narrowed suddenly, 

 and sometimes auricled on the upper, obliquely truncate in a curve on 

 the lower side; texture subcoriaceous ; rachis firm, naked or slightly villose, 

 chestnut-colored; veins oblique, obscure; sori close, copious, falling con- 

 siderably short of the margin. 



Arayat, 800 m., Loher; Montalban, Loher; Baguio, Topping 317. 



Hawaii, Hindostan. 



A. contiguum, var. bipinnatifidum Christ, Bull. Herb. Boiss. 6(1898) ; 

 152. Pinna^ again pinnate at the base; pimiules cuneiform, auriculate, 

 deeply dentate; looking like a hybrid between A. contiguum and A. 

 affine Sw. 



Arayat, 800 m.; Tonglon, 1,900 m., Loher. 



A. lepturus Presl, Epim. Bot., p. 72, is described as diff"ering from 

 A. contiguum in the form of the frond, which is lanceolate, about 20 cm. 

 high, and in the incision of the pinnae into sharply and inequally serrate, 

 truncate lobes; the sori seem to be costal, as in A. caudatum. 



Luzon, Cuming 211. 



(25) A. crinicaule Hance. Stipes densely tufted, 8 to 10 cm. long, 

 erect, dark brown, slightly fibrillose; frond 15 to 20 cm. long, 4 cm. broad, 

 with 9 to 15 horizontal pinntie on each side, which are 2 cm. long, hardly 

 1 cm. broad, bluntish, irregularly inciso-crenate, the upper side narrowed 

 suddenly, sometimes auricled at the base, the lower obliquely truncate; 

 texture subcoriaceous; rachis firm, slightly fibrillose, no distinct midrib; 

 veins subflabellate ; sori few, linear, very oblique. 



Davao, Warburg 14163 and 14178. 

 India, southern China. 



(26) A. caudatum Forst. Rhizome very short, adscendent; stipes 

 tufted, to 15 cm. high, firm, erect, densely clothed with fine, brown 

 fibrillose scales; frond 15 to 35 cm. high, 8 to 16 cm. broad, with 20 to 30 

 pinnae on each side, the point acuminate, the edge deeply toothed sometimes 



