VI. VITTARIE.E. 



Fronds simple and entire, not articulate to the rhizome; veins free or 

 anastomosing without free included veinlets; sori marginal or dorsal, 

 linear, usually immersed. Small ferns, mostly epiphytic. 



1. Sori single, lines parallel to the costa, fronds grass-like. 



2. Sori on or near the costa (46) Monogramme 



2. Sori in or near the margin (47) Vittaria 



1. Sori following the veins and anastomosing with them, fronds 



broader (48) Antrophyum 



(46) MONOGRAMME Schkuhr. 



Rhizome creeping; fronds (in our species) scattered, small, linear, with- 

 out other veins than the costa, glabrous; sorus on or near the costa, usually 

 protected by an outgrowth of leaf-tissue. Exceedingly simple epiphytes. 



1. Sori on the costa (1) M. trichoidea 



1. Sori beside the costa. 



2. Outgrowth of tissue on both sides of costa (2) M. paradoxa 



2. Outgrowth of tissue on one side of costa (3) M. dareaecarpa 



(1) M. trichoidea J. Sm. Rhizome slender; fronds numerous, filiform, 

 10 cm. or less long: the fertile ones dilated in two or ,thi'ee places, and 

 there bearing the sori, with high-raised edges on each side. 



Luzon, Cuming 160. 



(2) M. paradoxa (Fee) Bedd. Rhizome creeping, scaly; fronds form- 

 ing a turf, 5 to 30 cm. long, 1 mm. broad, flaccid, herbaceous; sori sunk in 

 a furrow on one or both sides of the costa. 



Philippines, according to Synopsis Filicum. 

 Ceylon to Hawaii and Australia. 



(3) M. dareaecarpa Hooker. Rhizome clothed with minute, narrow, 

 brown scales; fronds forming a turf on living trees, about 2 cm. high, 

 hardly 1 mm. broad near the top, subacute, narrowed downward but without 

 a distinct petiole, the fertile taller and relatively more slender than the 

 sterile, often notched at the apex by the projection of the pseudo-indusiura; 

 sorus along one side of the costa, covered by an outgrowth from it 

 reaching almost to the margin, confined to the apex of the frond, not 

 more than 3 mm. long. 



C4imogon River, Xegros, Copeland 63. 

 Labuan, New Guinea ( ?). 



The Xegros plant differs from the type in the absence of a distinct stipe, 

 and the very short sorus. 



106 



