536 64. ANTROPHYUM. 



and not more than l*/» m-M. broad. Sori slender, deep-sunk, often joining, 

 the edges of the furrows rather raised; paraphyses linear. 

 Philippines; Polynesia. 



* (18) A. spathuladim, «. A. ». n^ Bull. D^p. Agr. I. N., 4908 

 XVIII, 17. 



Rhizome creeping ; scales dense, brown, linear-lanceolate, the margin beset 

 with sharp, short, spreading, subremote teeth. Fronds 45 — 55 c.M. long, + 

 15 c.M. broad, broadest + */s of the way down to the base; upper half 

 obovate, short-acuminate at the point, narrowing gradually below into the 

 linear-cuneate lower half and the short stipe. Texture coriaceous; surfaces 

 naked; the lowest part with a distinct, black, but not prominent midrib; 

 central areolae 1^5 c.M. long, + 4 m.M. broad. Sori long, very numerous, 

 often joining, deeply sunk; edges of the furrows not raised ; paraphyses linear- 



Lingga Islands (Teysmann, No. 16656). 



6S. JUOXOGIfcAJVUMES, J>re«I. 



Sori linear-oblong or linear, forming an acute angle with the costa, 

 rarely subparallel to it; receptacle crossing the areolae. No indusium. 



Rhizome more or less creeping. Fronds not articulate to the rhizome, 

 simple and entire; veins immersed, invisible, (so the main ones when present), 

 anastomosing irregularly to form areolae with or without included free veinlets, 

 Bedd., Handb. ind. Ferns, fig. 228—229. (*) 



Paleotropical. 



a. Fronds uniform or nearly so. 



b. Sori parallel or subparallel to the costa'. [ (1) L. parallela. 



b.h. Sori ereclo-patent. 



c. Fronds rather long-stalked. (2) L. grandis. 



c.c. Fronds sessile or short-stalked. 



a. Costa flattened abov. , prominent beneath. (3) L. involuta. 



d.d. Costa prominent above, flattened beneath. 



[') Diels referred Loxogramme to Polypodlum, § Selliguea, from which it 

 is distinguished by the fronds adherent to the rhizome and the hidden or wanting main veins. 



