ASPLENIE^E ASPLENIUM. 87 



Athyrium. 



(34) A. (Athyrium) Sarasinorum (Christ Ann. Jard. Bot. Buitenz. 

 15(1898) :123, var. philippinense (Christ Bull. Herb. Bois. 6 (1898): 

 154).' Caudex short, bearing long, dark-brown scales; stipes 3 to 6 in 

 a cluster, slender, weak, brown, sparsely scaly, 15 cm. or more high; frond 

 above 10 cm. high, two-fifths as broad, acute, tripinnatifid; pinnae 10 or 

 more on each side, alternate, the lowest the longest; pinnules sessile or 

 the lowest short stalked, round-oval, divided to the costa below into 

 segments which in turn are incised into linear-lanceolate subacute lobes; 

 sori 1 to each lobe, slightly curved, with oval, loose, brown indusia. 



Mount Data, Benguet, 2,250 m., Loher. 

 The type of the species in Celebes. 



(35) A. (Athyrium) nigripes Blume. Stipes tufted, 15 to 30 cm. 

 high, stramineous, erect, scaly below; frond 30 to 60 cm. long, 20 to 30 

 cm. broad, ovate-lanceolate, with numerous pinnae on each side, the lowest 

 lanceolate, 15 to 25 cm. long, 4 to 5 cm. broad, cut down to the rachis 

 into numerous elliptico-rhomboidal pinnules, which are broadly lobed about 

 half way down and the lobes slightly toothed; texture herbaceous; lateral 

 veins of the segments forked; sori linear-oblong, often curved, 2 to 3 mm. 

 long, principally in two parallel rows close to the midrib of the pinnule. 



Mount Arayat, 800 m., Loher. 

 India to Java and Japan. 



(36) A. (Athyrium) woodwardioides (Presl) Baker. Stipe firm, 

 erect, naked, dark chestnut-brown; frond 60 to 100 cm. long, 30 cm. or more 

 broad; lower pinnae 15 to 25 cm. long, 8 cm. broad; pinnules lanceolate, 

 slightly stalked, 4 cm. long, 1 cm. broad, cut down two-thirds of the way 

 to the costa into linear-oblong, subfalcate, finely toothed lobes, herbaceous, 

 glabrous; veins pinnate in the lobes, with 4 to 5 veinlets on a side, the 

 upper ones forked, ends clavate; sori oblong, confined to the lower lobes 

 close to the costa and not reaching more than half way to the margin. 



Luzon, Cuming 153; Baguio, Loher. 

 Java. 



(31) TRIPHLEBIA Baker. 



Veins free; sori borne on a special receptacle between two parallel veins; 

 indusium double, each bounding vein bearing half of it, opening regularly 

 down the middle. Our two species are exclusively Philippine. 



(1) T. long! folia (Presl) Baker. Differs from the following species 

 only in that the frond is simple and entire, and the line where the two 

 halves of the indusium meet is not emphasized. 



Luzon, Haenke; Sorsogon, Baranda; Davao, Warburg 14117. 



(2) T. pinnata (J. Sm.) Baker. Stipe compressed, grayish; frond 50 

 to 120 cm. long, lanceolate-deltoid, rooting at the apex, with an entire or 

 finely crenate terminal pinna and 1 to 6 pairs of similar lateral ones, 

 glabrous, subcoriaceous ; veins usually once forked; sori numerous, oblique, 

 linear, the indusium ridged where the halves meet. 



Philippines, Cuming 187, 311; Biga, Catanduanes, Baranda. 





