77. PLATYCERIUM. § 1. EUPLATTCEHItlM. l69 



upper edge deeply lobed, the lobes linear, elongate, erect, simple or 1 — 2 X 

 forked, the base rounded, obliquely cordate, the outer edge sinuate, with the 

 lobes gradually passing into the higher, linear ones. Fertile fronds in pairs, 

 to 200 C.M. long, divided into 2 unequally developed halfs. The inner halfs 

 (i. e. the 2 contiguous halfs) of the fronds pendulous, dichotomously branched, 

 the segments cuneate, widening gradually from the base to the next higher 

 branching; ultimate segments lanceolate or triangular-elongate, narrowed to- 

 wards the apex. The outer halfs of the fronds spreading horizontally in 

 opposite directions, simple, large, to 75 c.M. broad, broadly flabellato-cuneate, 

 the outer edge slightly rounded and flanked by 2 blunt, falcate, incurved horns, 

 the horns horizontal or pendulous. Texture flaccido-coriaceous, firm when 

 dry; surfaces clothed with numerous, scattered but not crowded, stellate hairs. 

 Sori large, 2 to each frond, occupying the secondary disks, i.e. one placed in 

 the lowest sinus of the dichotomously divided half of each frond and the 

 other on the simple half, between the horns, the latter much the largest, 

 to ± 45 c.M. broad, to ± 20 c.M. deep; capsules copiously intermixed with 

 stellate hairs. — The description of this splendid and interesting fern is taken 

 from a specimen cultivated in the Buitenzorg gardens and probably gathered 

 in one of the malayan islands. Raciborski referred it to P. grande, /. Sm., 

 which has the segments loriform, naked, and the sori solitary, i. e. 1 sorus 

 to each frond, occupying the primary disk. — This species in dedicated to 

 Her Majesty Wilhelmina, Queen of the Netherlands. 

 ? Malayan. 



(4) P. l¥andae, Kac, Bull. Ac. Grac, 4902, 58. 



Basal fronds 150 — 200 c.M. long, 100 c.M. or more broad, the upper 

 edge deeply incised, the base deeply cordate, the lobes furnished with nume- 

 rous excrescenses, which are very thin, ± 6 c.M. long, several times dicho- 

 tomously forked and hiding the apex of the scaly rhizome. Fertile fronds pen- 

 dulous, 2 ^ forked, smaller than the barren ones, to 120 c.M. long; ultimate 

 segments cuneate, 20 — 40 c.M. broad at the apex, which is not truncate but 

 repand or incised. Sori covering the under surface of the terminal segments. 



New Guinea. 



* (5) P. snmbaiveiise, CfcW«#., Warb., Mons., I, 64; Alcicomium 

 mmbawense, Und., Bull. Torr. CI., XXXII, 596. ^ ] See Supplement L 



Basal fronds roundish-reniform, IB — 30 c.M. each way, laciniate, the 

 laciniae deeply forked; texture scariose, fragile, spongy; surfaces ± glossy; 



