716. LECANOPTEKIS. 409 



(4) li. davallioidesi, ». A. e. «., in Bull. Btz., 1916, XXIII, 14; 

 Polypodium deparioides, Christ, p. p.; v. A. v. R., Mai. Ferns, 626; — 

 var. macrocarpa, v. A. v. R., 1. c. 



Stipes naked, pale-brown. Fronds acuminate, very deeply pinnati- 

 partite or pinnate. Pinnae few to many on each side below the terminal 

 one, more or less spreading, obtuse, dimorphous ; barren pinnae entire ; 

 fertile pinnae linear, to 4 — 5 cm. long by + '/j cm. broad, blunt, toothed, 

 the teeth remote, retroflexed (turned back on the upper surface of the 

 pinnae). Texture thin to thick; surfaces naked. Sori deeply immer- 

 sed and occupying nearly the whole of the teeth, the cavity laterally 

 compressed, twisted, with the mouth facing obliquely towards the 

 margin or the apex of the pinna so as to form a spurious, pseudo- 

 davallioid indusium. 



Forma typica: Fronds to 35—45 cm. or more long; pinnae many, 

 thick; soral cavities proportionally small, about 2 mm. long by 1 mm. 

 deep. — Karimata Island. 



War. macrocarpa: Fronds smaller; pinnae less numerous; 

 soral cavities proportionally large, about 2 — 3 mm. long by as deep or 

 nearly so. — Sumatra. 



(5) Mj. Curtisii, Bh., in Journ. of Bot., XIX, 366 ; Hk., Ic. PL, 

 XVII, tab. MDCVII; v. A. v. R. in Bull. Btz., 1912, VII, tab. I, fig. 1 

 a — c; Polypodium naviculare, v. A. v. R., Mai. Ferns, 627. 



Rhizome creeping, tortuous, thick, naked, provided with conical 

 protuberances, yellow-brown. Stipes on the protuberances, 5 cm. or 

 more long, pale-brown. Fronds lanceolate, 35—45 cm. long, 5 — 12 cm. 

 broad, cut down nearly or quite to the rachis. Pinnae about 10 — 30 pair 

 below the terminal one, obtuse, dimorphous ; barren pinnae entire or sub- 

 sinuate-repand, somewhat narrowed near the base; fertile pinnae linear, 

 spreading, 2^1^ — 6 cm. long by + '/^ — 1' cm. broad, toothed, the teeth 

 remote, oblique, small. Texture papyraceous; surfaces naked, the under 

 one often glaucous; veins visible Sori small, immersed, occupying 

 more than the whole of the teeth, the cavity elongate, boat-shaped, 

 twisted, with the mouth facing obUquely towards the apex or the 

 margin of the pinna. 



Sumatra, Lingga, Java, Borneo, Celebes. 



(6) Vi. philippinensis, v. A. v. n., in Bull. Btz., 1911,1,9,; 

 1912, Vn, tab. I, fig. 2 a — c. ; L. p>utnila, Copel. (not. BL), in Leafl., Ill, 848. 



