32. HUMATA. § 1. EUHUMATA. 221 



persistent in the fertile fronds, similar to those of the rhizome but 

 shorter and paler. Sori occupying the whole under surface of the teeth, 

 1 — 2 on a tooth; indusium transversely oblong, proportionally very short 

 and broad. 

 Luzon. 



(14c) H. tenuis, Copeh, in Philipp. Journ., YIP, 67. 



Rhizome wiry, densely clothed with brown scales. Stipes scaly, 3 — 7 

 cm. long, those of the fertile fronds the longest. Barren fronds deltoid 

 + 5 — 8 cm. long, 3-pinnatifld; pinnulae oblong. Texture coriaceous; 

 rachises scaly; surfaces naked. Fertile fronds deltoid, 10—18 cm. long, 

 4-pinnatifid, acuminate, the lowest tertiary segments linear-oblong, 

 narrowly pinnatifld. Sori near the base of the ultimate segments. 



Neio Guinea. 



2. LEUCOSTEGIA. 



(15) H. falcinella, Copei. 



A specimen received from the Isle of Leyte has the rhizome scales 

 round, peltate, adpressed, with the apes suddenly narrowed into a very 

 long, spreading, mostly blackish, deciduously ciliated, hair-like point; 

 barren fronds with the ultimate segments blunt, entire to inciso-dentate, 

 the teeth not sharp, not falcate. 



(18) H. iiumerisa, Mett. 



Forma typica. — Also in Borneo (?). 



%'ar. aiuplissiiiia : A form gathered in Mindanao (Elmer No. 

 11548) has the fronds 4 — 5-pinnate, with the ultimate segments toothed 

 on the upper and the outer edge, the sori very large, and the indusia 

 rather straight at the base. — Celebes to Luzon. 



(20) U. hyniciiophylloides, Copeh; L. affinis, J. Sm., in Journ. 



Str. Br. R. A. Soc, 1908, SO, 16. 



33. ACROPHORUS, Presl. 

 Omit this genus, it being referred to Cystopteris. 



