246 



43. HISTIOPTEIMS, Smith, 



(3) H. integritolia, Copeh, in Philipp. Journ, VIF, 63; ? H. 

 incisa, J", 5'w., var. integrifolia, Bedd., Handb. Ind. Ferns, Suppl., 25. 



Pinnae petiolate; pinnulae sessile or tire lower subpetiolate, long, 

 linear, acuminate, subcordate at the base, the basal pair wanting or 

 auricle-like and orbicular. Sori not reaching the apices of the segments. 



Borneo. 



(4) H. stipulacea,. Copeh, in Philipp. -Journ., III^, 347., H. 

 incisa, J. Sm., C. Chr., Ind. Fil., p. p.; Pteris stipulacea, Hk., Spec. Fil., 

 II, 233. 



Stipes, rachises and costae beneath rich-castaneous, very glossy. 

 Fronds ample, 2-pinnate. Pinnae + 45 cm. long, opposite, the petioles 

 swollen at the base and furnished there with a pair of orbicular, foliaceous, 

 adpressed auricles or stipules. Pinnulae + 15 cm. long, remote, petiolate, 

 gradually acuminate, quite entire, obliquely cuneate at the base, the 

 terminal and lowest ones subhastate. Texture chartaceous; surfaces pale, 

 opaque and subglabrous beneath; costae prominent beneath; veins cop- 

 iously and nearly uniformly anastomosing, forming oblong, hexagonal, 

 obliquely spreading areolae, those next the costae rather the largest. 

 Indusium continuous, narrow, firm, almost the texture of the frond. — 

 A form found by Mr. Herwitt has the pinnulae almost sessile and 

 sometimes extravagantly hastate. 



Borneo. 



§ 1. EUPTERIS. 



(1) Pt. reducta, «fe.,- v. A. v. Pt., in Bull. Btz., 1914, XVI, 36. 

 Lowest segments sometimes more remote from the others, elongated 



and pinnatifid again, as in Pt. salakensis v. A. v. B., but with the lowest 

 secondary segments close to the main rachis, not decurrent upon the petiole 



(2) Pi. rangifcrinii. i»f. 



Also in Borneo, 



