96 rOLYPODIACE.E OF THE PHILIPPINE ISLANDS. 



high, narrowly lanceolate, bipinnatifid ; pinnae in numerous pairs, lower ones 

 opposite, very remote, 3 cm. long, deltoid-acuminate, cut down to the rachis 

 in the lower part into oblong or linear-oblong entire or slightly toothed 

 lobes, herbaceous, glabrous; sori copious, continuous; indvisiiun narrow. 



Luzon, Cuming 408. 



Himalayas to ^Malacca and soiithern China. 



(3) C. tenuifolia (Burm.) Swartz. Rhizome short-creeping; stipes 

 subtufted, 10 to 20 cm. high, wiry, flexuose, dark brown, polished; frond 10 

 to 20 'cm. high, deltoid, tripinnatifid; pinnae in numerous opposite pairs, the 

 lowest 5 to 10 cm. long, half as broad, with the largest pinnules on the 

 lower side, the latter pinnules cut down to the rachis into oblong, entire or 

 sinuate-pinnatifid segments, subcoriaceous, glabrous; sori subcontinuous ; 

 indusium narrow, brownish, more or less toothed. 



Luzon, Cuming, 62, 281; Benguet, Elmer, stipe and rachis puberulous; 

 Manila, Loher, Warburg ; Culion, Merrill 508. 



India to New Zealand and Polynesia. 



This species sometimes occurs without any indusium, even when very 

 young; judged by its genus-characters it is then a Nothochlaena, but I 

 am unable to separate it specifically: examples are: ^Yhitford 536 and 

 Merrill 3134, both from the Lamao Forest Reserve. 



(4) C. rufa Desv. Stipes densely clustered, 4 to 10 cm. high, densely 

 clothed with rusty-brown tomentum; frond 8 to 15 cm. high, ovate-lance- 

 olate, bipinnatifid; pinnae opposite, the lower remote or not, oblong; 

 pinnules on the lower side the larger, oblong or linear-oblong, crenate, 

 obtuse, both surfaces somewhat tomentose, the lower the more so and 

 beneath the pubescence waxy; sori copious; indusium ragged. 



Bagnio, Elmer 6575. 

 Himalayas. 



(5) C. farinosa (Forsk.) Kaulf. Stipes densely tufted, 10 to 30 cm. 

 higli, erect, dark brown, polished, scaly when young or at the base; frond 

 15 to 30 cm. high, narrowly ovate, tripinnatifid; pinna; opposite, the lower 

 pairs the larger, with the longer pinnules on the lower side; largest pinnules 

 deeply pinnatifid into entire, obtuse segments; most pinnae only pinnatifid, 

 papyraceous or subcoriaceous, glabrous, lower surface covered with white 

 or greenish or brownish waxy powder; sori forming a continuous narrow 

 line along the margin. 



Luzon, Cuming, 235; Benguet, Topping 224, Elmer 5889; Arayat and 

 Mariveles, Loher. A triangular fern about 5 cm. high on Mount Mariveles 

 is not the next species and may be this. 



Pantropic. 



(6) C. argentea (Gmelin) Hook. Stipes densely tufted, 8 to 15 cm. 

 high, wiry, dark brown, polished, scaly at the base when young; frond 

 triangular, about 8 cm. in diameter, bi- or tripinnate, upper part not cut 

 down to the rachis; lower pinnae much the largest; cut down nearly to the 

 costa, and the lowest basipetal segment pinnatifid, dark green above, white- 

 waxy beneath ; sori very small, fusing. 



Benguet, Loher. 

 Siberia to Malacca. 



