ASPLENIE^E BLECHNUM. 91 



decurrent, cleft almost to the costa into crowded lobes; lobes scarcely 1 cm. 

 long, half as broad, triangular-oblong, subfalcate, finely but acutely ser- 

 rate; rachis bearing triangular, often bifurcate lobes between the pinnae; 

 sori linear, midway between the margin and midrib of the lobe but soon 

 occupying the entire lamina; indusium narrow, gray, evanescent. 



Central Cordillera of Luzon, gregarious, apparently fruiting rarely, 

 Loher. 



Type of the species in New Zealand. 



(34) WOODWARDIA Smith. 



Veins anastomosing to form a series of areolffi along the costa, and in 

 our species several series of similar areolse between this and the margin; 

 sori linear-oblong, one occupying each costal areola, the indusium opening 

 toward the costa. Large terrestrial ferns with bipinnatifid fronds. 



(1) W. radicans (L.) Smith. Rhizome short, erect; stipe 40 to 100 

 cm. high, strong, naked except at the base; frond 1 m. or more high, 

 one-third as wide; pinnae broadly lanceolate, acuminate, subsessile, cut 

 down almost to the costa into narrowly linear segments serrate toward 

 their apices, subcoriaceous. 



Benguet, Loher, Elmer 6512. 



Warmer parts of Northern Hemisphere. 



Our plant is intermediate between W. radicans as originally described 

 and W. orientalis Swartz of Japan and Formosa, which is no longer 

 regarded as a distinct species. 



