﻿37. ADIANTDJI. § 1. EU-ADIANTUM. C. POLYSORIAE. 323 



apex lobed. Lobes rounded, crenulate. Surfaces naked ; racliis slender, black- 

 brown, naked; veins flabellate. Sori often 2 on a pinna, terminal on the 

 lobes; indusium narrow, obreniform, naked, persistent. 

 Malacca. 



(5) A. Hosei, JBU., Journ. of Bot., XXVI, 524. 



Stipes slender, castaneous, + 30 c.M. long, sparingly covered with small, 

 reflexed, linear, brown scales towards the base. Fronds 2-pinnate, rhomboidal 

 in outline. Pinnae lanceolate, 10 — 25 c.M. long, 2— 2'/2 c.M. broad. Leaflets 

 (pinnulae) close, numerous, rhomboidal, dimidiate, obtuse, short-stalked, the 

 central ones 2 — 2'/2 c.M. long, 6 — 9 m.M. broad, the barren ones minutely 

 crenate. Texture moderately firm; surfaces naked like the castaneous rachis. 

 Sori 1 — 2, placed on the upper margin of the leaflets, to 4 — 7 m.M. long; 

 indusium broad, firm. — Pendulous plants. 



Borneo. 



* (6) A. diaphanum, JBI., Rac, Flor. Btz., I, 145; Hk., Spec. Fil, 

 II, tab. LXXX, C; — var. afiine; A. affine, Ilk., 1. c, 52. 



Rhizome short, erect, densely clothed with small, lanceolate scales. 

 Stipes tufted, 6 — 20 c.M. long, slender, erect, blackish, polished, scaly at 

 the very base. Fronds 10 — 20 c.M. long, simply pinnate, linear-lanceolate, 

 or with 1—5 branches varying from short to nearly as long as the ter- 

 minal one. Leaflets short-stalked, 1 — 2 c.M. long, '/^ — 1 c.M. broad, unilateral 

 or sometimes slightly inequilateral, ovate to rhomboidal, the lower line straight 

 or upcurved, the upper one + parallel to the lower, crenate or slightly lobed 

 like the rounded outer edge. Texture very thin; rachis naked; upper surface 

 purveyed with few, scattered, brown, subulate bristles especially near the 

 lower edge, the under surface clothed with numerous small, adpressed hairs; 

 veins terminating in the ultimate crenations or serratures. Sori obreniform, 

 placed in nearly circular hollows on the upper and often also the outer edge ; 

 capsules springing from the veins and parenchyma. — In habit this shows 

 an approximation towards the pedate group when branched. 



War. aflfine : Surfaces naked except the subulate bristles on the upper 

 surface, olive-green when dry. 



Trap. Asia, Polynesia, Australia, New Zealand. 



(7) A. Zolling-eri, Mett., Ann. Mus, Bot. L. B., IV, 280. 



Rhizome short, clothed like the base of the stipes with reddish-brown. 



